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Robert Seitz
Joined: 29 Dec 2015
Posts: 261
Location: Phoenix, AZ
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Posted: Feb 03, 2022 10:52 Post subject: Re: Silvia's Collection |
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I look forward to details of your story re setting up and using 3D printer for mineral bases.
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silvia
Joined: 10 Oct 2021
Posts: 253
Location: UK
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Posted: Feb 07, 2022 17:37 Post subject: Deardorff mine, Illinois - Silvia's Collection |
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The specimen contains a grouping of lustrous Galena crystals 6 cm on edge set on large lustrous black crystals of Sphalerite and accented nicely with sparkling colorless gemmy Quartz.
Mineral: | Galena, Quartz, Sphalerite |
Locality: | W.L. Davis-Deardorff Mine, Ozark-Mahoning group, Cave-in-Rock Sub-District, Hardin County, Illinois, USA | |
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Dimensions: | 15 cm x 13 cm x 7 cm |
Description: |
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13712 Time(s) |
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Mineral: | Galena, Quartz, Sphalerite |
Locality: | W.L. Davis-Deardorff Mine, Ozark-Mahoning group, Cave-in-Rock Sub-District, Hardin County, Illinois, USA | |
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Dimensions: | 15 cm x 13 cm x 7 cm |
Description: |
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Viewed: |
13691 Time(s) |
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Mineral: | Galena, Quartz, Sphalerite |
Locality: | W.L. Davis-Deardorff Mine, Ozark-Mahoning group, Cave-in-Rock Sub-District, Hardin County, Illinois, USA | |
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Dimensions: | 15 cm x 13 cm x 7 cm |
Description: |
Matrix view. Often this view tells you a lot about how the display view was born. |
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13688 Time(s) |
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Mineral: | Galena, Quartz, Sphalerite |
Locality: | W.L. Davis-Deardorff Mine, Ozark-Mahoning group, Cave-in-Rock Sub-District, Hardin County, Illinois, USA | |
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Dimensions: | 15 cm x 13 cm x 7 cm |
Description: |
Details of the crystals view 1 |
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13666 Time(s) |
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Mineral: | Galena, Quartz, Sphalerite |
Locality: | W.L. Davis-Deardorff Mine, Ozark-Mahoning group, Cave-in-Rock Sub-District, Hardin County, Illinois, USA | |
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Dimensions: | 15 cm x 13 cm x 7 cm |
Description: |
Detail of the crystals view 2 |
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Viewed: |
13722 Time(s) |
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Mineral: | Galena, Quartz, Sphalerite |
Locality: | W.L. Davis-Deardorff Mine, Ozark-Mahoning group, Cave-in-Rock Sub-District, Hardin County, Illinois, USA | |
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Dimensions: | 15 cm x 13 cm x 7 cm |
Description: |
Detail of the crystals view 3 |
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Viewed: |
13708 Time(s) |
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Mineral: | Galena, Quartz, Sphalerite |
Locality: | W.L. Davis-Deardorff Mine, Ozark-Mahoning group, Cave-in-Rock Sub-District, Hardin County, Illinois, USA | |
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Dimensions: | 15 cm x 13 cm x 7 cm |
Description: |
Detail of the crystals view 4. |
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13690 Time(s) |
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Mineral: | - |
Locality: | W.L. Davis-Deardorff Mine, Ozark-Mahoning group, Cave-in-Rock Sub-District, Hardin County, Illinois, USA | |
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Description: |
Location based on GPS. If anyone has locality photos of the mine inside and or outside please share. I do enjoy my locality photos as it add an enormous dimension to the mineral collection. |
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13714 Time(s) |
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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4112
Location: Germany
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Posted: Feb 08, 2022 03:53 Post subject: Re: Deardorff mine, Illinois - Silvia's Collection |
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Hi Silvia, again it's a pleasure to see your contribution here! As usual, you give further information, detailed description, an aerial photo of the locality, I really like that and I know I'm not the only one here ;-)
silvia wrote: | Location based on GPS. If anyone has locality photos of the mine inside and or outside please share. I do enjoy my locality photos as it add an enormous dimension to the mineral collection. | I agree with you, photos of a mine's surroundings, of the inside and maybe even of the mining process add a great dimension to a specimen. I always enjoyed to see photos or videos of specimen mining and I've seen some great stuff (e.g. from Elmwood, from Rogerley, from Chinese fluorite mines, from the crocoite mining in Tasmania, from Pederneira and other Brazilian pegmatites, from vanadinite mining in Morocco, from the outstanding rhodochrosite finds at Sweet Home Mine and several others). But I think I've never seen footage from the Deardorff Mine. So if anyone has some photos of it, I would also love to see them!
And concerning the specimen:
silvia wrote: | The specimen contains a grouping of lustrous Galena crystals 6 cm on edge set on large lustrous black crystals of Sphalerite and accented nicely with sparkling colorless gemmy Quartz. | You may know that galena, quartz and sphalerite are among my favourite minerals, so you can guess what's my opinion on this piece ;-) Lovely combination of the two sulfides in silvery and black with a dominant galena cluster on top, brightened up by the many white and lustrous quartzes and completed by the reddish sphalerite matrix. And the overall shape is very aesthetic. This sample from your collection shows that you and your husband don't just gather or collect minerals - you CHOOSE them!
For my personal taste this is a perfect mineral specimen :-)
Regards
Tobi
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silvia
Joined: 10 Oct 2021
Posts: 253
Location: UK
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Posted: Feb 08, 2022 17:28 Post subject: Re: Deardorff mine, Illinois - Silvia's Collection |
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Tobi wrote: | Hi Silvia, again it's a pleasure to see your contribution here! As usual, you give further information, detailed description, an aerial photo of the locality, I really like that and I know I'm not the only one here ;-)
silvia wrote: | Location based on GPS. If anyone has locality photos of the mine inside and or outside please share. I do enjoy my locality photos as it adds an enormous dimension to the mineral collection. | I agree with you, photos of a mine's surroundings, of the inside and maybe even of the mining process add a great dimension to a specimen. I always enjoyed seeing photos or videos of specimen mining and I've seen some great stuff (e.g. from Elmwood, from Rogerley, from Chinese fluorite mines, from the crocoite mining in Tasmania, from Pederneira and other Brazilian pegmatites, from vanadinite mining in Morocco, from the outstanding rhodochrosite finds at Sweet Home Mine and several others). But I think I've never seen footage from the Deardorff Mine. So, if anyone has some photos of it, I would also love to see them!
And concerning the specimen:
silvia wrote: | The specimen contains a grouping of lustrous Galena crystals 6 cm on edge set on large lustrous black crystals of Sphalerite and accented nicely with sparkling colorless gemmy Quartz. | You may know that galena, quartz and sphalerite are among my favourite minerals, so you can guess what's my opinion on this piece ;-) Lovely combination of the two sulfides in silvery and black with a dominant galena cluster on top, brightened up by the many white and lustrous quartzes and completed by the reddish sphalerite matrix. And the overall shape is very aesthetic. This sample from your collection shows that you and your husband don't just gather or collect minerals - you CHOOSE them!
For my personal taste this is a perfect mineral specimen :-)
Regards
Tobi |
Many thanks for your kind words. The sulphides are our favourite minerals too.
My partner and I have a lot of help selecting and acquiring minerals. We have three adult sons, and one adult daughter who provide encouragement and sometimes the money to buy specimens too. Our children do not collect minerals (yet!) but they know the importance of collecting and curating.
We collect the biggest and the best we can afford. Sometimes we have to save, however thrift is a skill we have developed well.
Every collector has their particular emphasis; for us, we try and avoid buying minerals just for the sake of buying a mineral. We try to develop themes, especially when we can combine minerals with a locality, as was the case with our Panasqueira collection.
In a very real sense we not only collect minerals but we also collect the mines. Thus we combine the minerals we collect with the geology, the geography, the history and the mining methods of a particular locality. We have some great contributions to make to FMF in the coming months with some beautiful mineral photos and some great and detailed locality information.
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silvia
Joined: 10 Oct 2021
Posts: 253
Location: UK
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Posted: Feb 13, 2022 16:55 Post subject: Native Copper - Silvia's Collection |
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A fine large cabinet cluster of crystallized native copper without matrix. The specimen contains many Spinel twinned Copper crystals.
Mineral: | Copper |
Locality: | Rocklands Mine, Cloncurry, Cloncurry Shire, Queensland, Australia | |
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Dimensions: | 16 cm x 16 cm x 5 cm |
Description: |
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Viewed: |
13471 Time(s) |
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Mineral: | Copper |
Locality: | Rocklands Mine, Cloncurry, Cloncurry Shire, Queensland, Australia | |
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Dimensions: | 16 cm x 16 cm x 5 cm |
Description: |
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Viewed: |
13477 Time(s) |
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Mineral: | Copper |
Locality: | Rocklands Mine, Cloncurry, Cloncurry Shire, Queensland, Australia | |
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Dimensions: | 16 cm x 16 cm x 5 cm |
Description: |
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Viewed: |
13476 Time(s) |
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Mineral: | Copper |
Locality: | Rocklands Mine, Cloncurry, Cloncurry Shire, Queensland, Australia | |
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Dimensions: | 16 cm x 16 cm x 5 cm |
Description: |
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Viewed: |
13472 Time(s) |
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Mineral: | Copper |
Locality: | Rocklands Mine, Cloncurry, Cloncurry Shire, Queensland, Australia | |
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Dimensions: | 16 cm x 16 cm x 5 cm |
Description: |
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Viewed: |
13474 Time(s) |
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Mineral: | Copper |
Locality: | Rocklands Mine, Cloncurry, Cloncurry Shire, Queensland, Australia | |
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Dimensions: | 16 cm x 16 cm x 5 cm |
Description: |
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Viewed: |
13447 Time(s) |
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Mineral: | _ |
Locality: | Rocklands Mine, Cloncurry, Cloncurry Shire, Queensland, Australia | |
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Description: |
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13484 Time(s) |
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silvia
Joined: 10 Oct 2021
Posts: 253
Location: UK
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Posted: Feb 14, 2022 17:33 Post subject: Rocklands Copper Mine - Silvia's Collection |
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The Rocklands Copper Mine
I first became aware of this deposit way back in 2013, when a friend in the mining industry pointed out that a deposit consisting largely of Native Copper had been discovered near Mt Isa in Queensland, Australia. He had visited the mine twice in 2013, and had seen first-hand crystalline Copper nuggets exceeding 200 kilograms. He had also seen large aggregates of native Copper associated with sooty Tenorite. By large he meant 6 feet long or more. He had also seen specimens of crystallized Chalcocite associated with Calcite.
The only reason few specimens from the mine had been seen for sale is the mechanized nature of the mine and the no collecting policy of the original owners. A British company, UK mining ventures did a specimen recovery program in 2017, shortly before the mine was closed by the legal mandate of the Queensland Mines Department.
Had this mine been discovered in the 1800’s and worked by conventional mining methods of the day – hand picks and drives – specimens from the mine would be in the collections of some of the finest Museums in the world and in the collections of astute mineral collectors. I saw one spinel twinned Copper crystal from the mine 160 mm long by 30 mm wide.
The mine still has a lot of collector quality native Copper, Chalcocite and Chalcopyrite left, as the ore-body is so extensive in length and depth.
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silvia
Joined: 10 Oct 2021
Posts: 253
Location: UK
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Posted: Feb 14, 2022 17:52 Post subject: Another Mine Report by Silvia's |
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Rockland Copper Project
The Rockland copper project is located approximately 17km west of Cloncurry in north-west Queensland, Australia. Originally owned by CuDECO, the 1,600ha mine has been in receivership since 2020 with outstanding liabilities of over 60 million Australian dollars. Copper Resources Australia took over the troubled site in December 2020, more than two years after operations were suspended under former owner CuDeco, which went into liquidation in May 2020.
High grade copper ore consisting chiefly of Native Copper and Chalcocite were extracted from two mineralized bodies: Rocklands South and Las Minerale.
Las Minerale and Rocklands South - contain a unique supergene-enriched zone, characterised by pervasive high-grade Coarse Native Copper and associated Chalcocite ore, which persists from near-surface to depths of 180m, widths up to 45m. The combined native copper/supergene zone strike length exceeds 1200m.
Copper mineralogy at Rocklands is dominated by:
• Oxide zone (minor): Malachite, Azurite, Tenorite and Cuprite.
• Supergene enrichment zone (major): Chalcocite and Native Copper.
• Secondary sulphide enrichment zone (minor): Altered sulphides - Chalcocite and Bornite.
• Primary sulphide zone: Chalcopyrite (major) and Bornite (minor).
Mining methods included conventional open pit mining, an onsite beneficiation plant, a tailings storage facilities, waste rock facilities, surface water diversion, and site access.
Construction began in the first quarter of 2012 and open pit operations began in late 2012. The first concentrate was produced in July 2016 and was delivered to China Oceanwide International Investment in August 2016. The mine was officially opened in October 2016.
Geology
The mine lies within the Eastern Succession of the Proterozoic-aged Mt. Isa Inlier located in the Duck Creek Anticline. The mineralised lodes are hosted within a metamorphosed sedimentary complex with an east south east strike. The complex includes fine quartz and quartz magnetite sandstone, quartzite, siltstone, limestone and calcareous units, including scapolitic siltstone. Copper mineralisation is largely associated with intrusive medium grained dolerite that is prominent across the area and appears to be conformable with the sediments.
Copper mineralisation occurs in a sequence of partially parallel linear zones with a west-north-west trend. Twelve Cu/Co/Au ore bodies have been identified to date. The two most prominent mineralised bodies include Las Minerale and Rocklands South. Both the structures contain ore grade and thick copper mineralisation over strike lengths of hundreds of metres.
The mineralisation is associated with local alteration of biotite, actinolitic amphibole, red feldspar magnetite, calcite and silica. Substantial evidence of planar joints and fractures is available across the prospect area. The joints and fractures have served as dilatant channel paths to fluids that have metamorphosed and mineralised the rocks. The central part of Las Minerale hosts prominent polymict breccias.
Mineral: | _ |
Locality: | Rocklands Mine, Cloncurry, Cloncurry Shire, Queensland, Australia | |
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Description: |
Map showing the general locality of the deposit. |
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Viewed: |
13382 Time(s) |
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Mineral: | _ |
Locality: | Rocklands Mine, Cloncurry, Cloncurry Shire, Queensland, Australia | |
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Description: |
Aerial photograph showing the regional topography in relation to the nearest populated centre - Cloncurry |
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Viewed: |
13390 Time(s) |
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Locality: | Rocklands Mine, Cloncurry, Cloncurry Shire, Queensland, Australia | |
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Description: |
Aerial photograph showing detailed mine plan as it existed in 2019. |
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Viewed: |
13390 Time(s) |
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Mineral: | _ |
Locality: | Rocklands Mine, Cloncurry, Cloncurry Shire, Queensland, Australia | |
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Description: |
Aerial Photograph of the mine as it existed in 2013. Las Minerale Pit is easily seen. |
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Viewed: |
13402 Time(s) |
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Mineral: | _ |
Locality: | Rocklands Mine, Cloncurry, Cloncurry Shire, Queensland, Australia | |
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Description: |
Map of the main ore-body. Yes it is that extensive! |
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Viewed: |
13395 Time(s) |
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Mineral: | _ |
Locality: | Rocklands Mine, Cloncurry, Cloncurry Shire, Queensland, Australia | |
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Description: |
Las Minerale Open cut about mid - 2017 |
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Viewed: |
13390 Time(s) |
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Mineral: | _ |
Locality: | Rocklands Mine, Cloncurry, Cloncurry Shire, Queensland, Australia | |
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Description: |
Las Minerale Open cut early 2016. |
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Viewed: |
13380 Time(s) |
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Mineral: | _ |
Locality: | Rocklands Mine, Cloncurry, Cloncurry Shire, Queensland, Australia | |
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Description: |
High grade Chalcocite zone exposed 2013 |
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Viewed: |
13393 Time(s) |
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Mineral: | _ |
Locality: | Rocklands Mine, Cloncurry, Cloncurry Shire, Queensland, Australia | |
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Description: |
A very large native Copper nugget about 6 feet long. |
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Viewed: |
13345 Time(s) |
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Mineral: | _ |
Locality: | Rocklands Mine, Cloncurry, Cloncurry Shire, Queensland, Australia | |
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Description: |
Euhedral crystals of Chalcocite associated with Calcite in a drill core. Width of core about 60 mm |
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Viewed: |
13375 Time(s) |
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Mineral: | _ |
Locality: | Rocklands Mine, Cloncurry, Cloncurry Shire, Queensland, Australia | |
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Description: |
A large mass of Native Copper cut in half to expose the beautiful metal core. |
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Viewed: |
13387 Time(s) |
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Mineral: | _ |
Locality: | Rocklands Mine, Cloncurry, Cloncurry Shire, Queensland, Australia | |
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Description: |
Typical core sample showing almost pure Native Copper. |
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Viewed: |
13384 Time(s) |
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silvia
Joined: 10 Oct 2021
Posts: 253
Location: UK
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Posted: Feb 17, 2022 21:35 Post subject: Rocklands Copper Mine Report Part 2- Silvia's Collection |
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ROCKLANDS MINE PROCESSING PLANT
The Rocklands Fixed Crushing Plant and Copper Concentrator were designed to treat 3 million tonnes of ore per year. The mill was designed to produce five saleable products:
• Coarse Native Copper concentrate
• Filtered fine Native Copper concentrate
• Filtered sulphide Copper concentrate
• Filtered Pyrite concentrate containing cobalt
• Filtered Magnetite concentrate
By late 2016, the operators had installed a copper casting plant. The casting plant produced half tonne copper ingots by melting coarse native Copper.
The key aspects of the treatment of the Rocklands ore were:
1. Recovery of the native Copper was divided into three products:
• Very Coarse (>40 mm – from crushing plant),
• Coarse (>1 mm by jigs) and
• Fine (<1>0.1 mm from spirals and tables),
2. The differential separation and recovery by flotation of the copper minerals and the pyrite containing cobalt,
3. Recovery of magnetite from flotation tailings.
The Plant installed at Rocklands utilized the following processes:
• A high-pressure grinding roll (HPGR)
• A rotary scrubber (de-agglomerator)
• Classifying screens
• Jigging circuit, consisting of Coarse, Intermediate and Fine jig circuits
• Spiral separation, consisting of rougher and scavenger spirals
• Table separation, consisting of rougher and cleaner tables
• Two belt filters, to filter fine native Copper product from spirals and tables
• Five thickeners (gravity, copper concentrate, pyrite (cobalt) concentrate, magnetite concentrate and tailings thickeners)
• Ball mill and cyclones
• Copper flotation, consisting of roughing, regrinding, cleaning, scavenging and re-cleaning
• Pyrite (cobalt) flotation, consisting of roughing, cleaning and re-cleaning
• Magnetic separation, consisting of roughing, regrinding, cleaning
Mineral: | _ |
Locality: | Rocklands Mine, Cloncurry, Cloncurry Shire, Queensland, Australia | |
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Description: |
A map of the processing plant |
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Viewed: |
13221 Time(s) |
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Mineral: | _ |
Locality: | Rocklands Mine, Cloncurry, Cloncurry Shire, Queensland, Australia | |
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Description: |
Aerial Photograph of the plant as it existed in 2016. |
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Viewed: |
13233 Time(s) |
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Mineral: | _ |
Locality: | Rocklands Mine, Cloncurry, Cloncurry Shire, Queensland, Australia | |
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Description: |
Containers full of native Copper of various sizes. I would love to spend a few days looking through these containers. |
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Viewed: |
13240 Time(s) |
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Mineral: | _ |
Locality: | Rocklands Mine, Cloncurry, Cloncurry Shire, Queensland, Australia | |
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Description: |
Casting of Copper ingots in the trial smelter facility |
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Viewed: |
13205 Time(s) |
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Mineral: | _ |
Locality: | Rocklands Mine, Cloncurry, Cloncurry Shire, Queensland, Australia | |
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Description: |
Used to remove very fine Native Copper |
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Viewed: |
13230 Time(s) |
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Locality: | Rocklands Mine, Cloncurry, Cloncurry Shire, Queensland, Australia | |
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Description: |
Ball Mill. The name says it all - large ball used to crush ore to a fine paste. |
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Viewed: |
13230 Time(s) |
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Mineral: | _ |
Locality: | Rocklands Mine, Cloncurry, Cloncurry Shire, Queensland, Australia | |
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Description: |
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Viewed: |
13213 Time(s) |
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Mineral: | _ |
Locality: | Rocklands Mine, Cloncurry, Cloncurry Shire, Queensland, Australia | |
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Description: |
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Viewed: |
13220 Time(s) |
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Mineral: | _ |
Locality: | Rocklands Mine, Cloncurry, Cloncurry Shire, Queensland, Australia | |
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Description: |
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Viewed: |
13232 Time(s) |
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Mineral: | _ |
Locality: | Rocklands Mine, Cloncurry, Cloncurry Shire, Queensland, Australia | |
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Description: |
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Viewed: |
13228 Time(s) |
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Mineral: | _ |
Locality: | Rocklands Mine, Cloncurry, Cloncurry Shire, Queensland, Australia | |
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Description: |
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Viewed: |
13214 Time(s) |
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Mineral: | _ |
Locality: | Rocklands Mine, Cloncurry, Cloncurry Shire, Queensland, Australia | |
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Description: |
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Viewed: |
13188 Time(s) |
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silvia
Joined: 10 Oct 2021
Posts: 253
Location: UK
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Posted: Feb 20, 2022 13:59 Post subject: Native Copper - Silvia's Collection |
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A beautifully crystallized native copper specimen with no points of attachment.
Mineral: | Copper |
Locality: | Rocklands Mine, Cloncurry, Cloncurry Shire, Queensland, Australia | |
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Dimensions: | 15 cm x 7 cm x 3 cm |
Description: |
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Viewed: |
13082 Time(s) |
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Mineral: | Copper |
Locality: | Rocklands Mine, Cloncurry, Cloncurry Shire, Queensland, Australia | |
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Dimensions: | 15 cm x 7 cm x 3 cm |
Description: |
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Viewed: |
13079 Time(s) |
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Mineral: | Copper |
Locality: | Rocklands Mine, Cloncurry, Cloncurry Shire, Queensland, Australia | |
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Dimensions: | 15 cm x 7 cm x 3 cm |
Description: |
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Viewed: |
13096 Time(s) |
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Mineral: | Copper |
Locality: | Rocklands Mine, Cloncurry, Cloncurry Shire, Queensland, Australia | |
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Dimensions: | 15 cm x 7 cm x 3 cm |
Description: |
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Viewed: |
13071 Time(s) |
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Mineral: | Copper |
Locality: | Rocklands Mine, Cloncurry, Cloncurry Shire, Queensland, Australia | |
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Dimensions: | 15 cm x 7 cm x 3 cm |
Description: |
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Viewed: |
13063 Time(s) |
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Mineral: | Copper |
Locality: | Rocklands Mine, Cloncurry, Cloncurry Shire, Queensland, Australia | |
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Dimensions: | 15 cm x 7 cm x 3 cm |
Description: |
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Viewed: |
13086 Time(s) |
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Mineral: | Copper |
Locality: | Rocklands Mine, Cloncurry, Cloncurry Shire, Queensland, Australia | |
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Dimensions: | 15 cm x 7 cm x 3 cm |
Description: |
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Viewed: |
13054 Time(s) |
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silvia
Joined: 10 Oct 2021
Posts: 253
Location: UK
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Posted: Feb 22, 2022 16:02 Post subject: Mundo Nuevo - Silvia's Collection |
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Extremely large and lustrous sharp crystals of Tetrahedrite to 6 cm in size across the top of this crystallized Pyrite and Sphalerite matrix.
Mineral: | Tetrahedrite, Sphalerite, Pyrite |
Locality: | Mundo Nuevo mining area, Mundo Nuevo, Huamachuco, Sánchez Carrión Province, La Libertad Department, Peru | |
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Dimensions: | 14 cm x 10 cm x 6 cm |
Description: |
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Viewed: |
12985 Time(s) |
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Mineral: | Tetrahedrite, Sphalerite, Pyrite |
Locality: | Mundo Nuevo mining area, Mundo Nuevo, Huamachuco, Sánchez Carrión Province, La Libertad Department, Peru | |
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Dimensions: | 14 cm x 10 cm x 6 cm |
Description: |
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Viewed: |
12981 Time(s) |
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Mineral: | _ |
Locality: | Mundo Nuevo mining area, Mundo Nuevo, Huamachuco, Sánchez Carrión Province, La Libertad Department, Peru | |
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Description: |
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13001 Time(s) |
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Mineral: | _ |
Locality: | Mundo Nuevo mining area, Mundo Nuevo, Huamachuco, Sánchez Carrión Province, La Libertad Department, Peru | |
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Description: |
Locality map. The mine is accessed via a 4 wheel drive track from Tamboras. |
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Viewed: |
13055 Time(s) |
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Mineral: | _ |
Locality: | Mundo Nuevo mining area, Mundo Nuevo, Huamachuco, Sánchez Carrión Province, La Libertad Department, Peru | |
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Description: |
Topography of the region showing access roads and mine location. |
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Viewed: |
13032 Time(s) |
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Mineral: | _ |
Locality: | Mundo Nuevo mining area, Mundo Nuevo, Huamachuco, Sánchez Carrión Province, La Libertad Department, Peru | |
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Description: |
Looking at the location of the mine across Laguna Toro Verde. |
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Viewed: |
12991 Time(s) |
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silvia
Joined: 10 Oct 2021
Posts: 253
Location: UK
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Posted: Feb 28, 2022 15:34 Post subject: Malachite: Silvia's Collection |
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Enchanting specimen, comprising green velvety crystallized malachite in a large open pocket.
Mineral: | Malachite |
Locality: | Mindingi Mine (Mindigi Mine), Swambo, Kambove District, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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Dimensions: | 18 cm x 10 cm x 9 cm |
Description: |
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Viewed: |
12794 Time(s) |
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Mineral: | Malachite |
Locality: | Mindingi Mine (Mindigi Mine), Swambo, Kambove District, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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Dimensions: | 18 cm x 10 cm x 9 cm |
Description: |
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Viewed: |
12799 Time(s) |
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Mineral: | Malachite |
Locality: | Mindingi Mine (Mindigi Mine), Swambo, Kambove District, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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Dimensions: | 18 cm x 10 cm x 9 cm |
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12782 Time(s) |
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Mineral: | Malachite |
Locality: | Mindingi Mine (Mindigi Mine), Swambo, Kambove District, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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Dimensions: | 18 cm x 10 cm x 9 cm |
Description: |
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12775 Time(s) |
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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4112
Location: Germany
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Posted: Mar 01, 2022 04:36 Post subject: Re: Malachite: Silvia's Collection |
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silvia wrote: | Enchanting specimen, comprising green velvety crystallized malachite in a large open pocket. | I love the shape and the way it presents the vug. Again a very beautiful and interesting specimen, Silvia!
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silvia
Joined: 10 Oct 2021
Posts: 253
Location: UK
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Posted: Mar 01, 2022 20:36 Post subject: Re: Malachite: Silvia's Collection |
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Tobi wrote: | silvia wrote: | Enchanting specimen, comprising green velvety crystallized malachite in a large open pocket. | I love the shape and the way it presents the vug. Again a very beautiful and interesting specimen, Silvia! |
In my humble opinion Malachite is one of the best species to collect with perhaps the highest quality/price ratio. You can get some stunning specimens for ‘little’ cost. It is one species I always recommend to those who have just started collecting minerals.
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silvia
Joined: 10 Oct 2021
Posts: 253
Location: UK
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Posted: Mar 07, 2022 15:12 Post subject: Malachite - Silvia's Collection |
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Beautiful deep green botyroidal and crystallized malachite.
Mineral: | Malachite |
Locality: | Mindingi Mine (Mindigi Mine), Swambo, Kambove District, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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Dimensions: | 15 cm x 12 cm x 5 cm |
Description: |
Display view. BTW I love Malachite! |
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12442 Time(s) |
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Mineral: | Malachite |
Locality: | Mindingi Mine (Mindigi Mine), Swambo, Kambove District, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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Dimensions: | 15 cm x 12 cm x 5 cm |
Description: |
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12432 Time(s) |
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Mineral: | Malachite |
Locality: | Mindingi Mine (Mindigi Mine), Swambo, Kambove District, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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Dimensions: | 15 cm x 12 cm x 5 cm |
Description: |
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12452 Time(s) |
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Mineral: | Malachite |
Locality: | Mindingi Mine (Mindigi Mine), Swambo, Kambove District, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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Dimensions: | 15 cm x 12 cm x 5 cm |
Description: |
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12437 Time(s) |
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Mineral: | _ |
Locality: | Mindingi Mine (Mindigi Mine), Swambo, Kambove District, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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12451 Time(s) |
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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4112
Location: Germany
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Posted: Mar 09, 2022 04:16 Post subject: Re: Malachite - Silvia's Collection |
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silvia wrote: | BTW I love Malachite! | I actually don't love malachites that much - but this one is really a stunning eyecatcher (like all of your specimens)!
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silvia
Joined: 10 Oct 2021
Posts: 253
Location: UK
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Posted: Mar 10, 2022 15:55 Post subject: Re: Malachite - Silvia's Collection |
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Tobi wrote: | silvia wrote: | BTW I love Malachite! | I actually don't love malachites that much - but this one is really a stunning eyecatcher (like all of your specimens)! |
Many thanks for your kind words of encouragement.
My partner and I have many favourites including but not limited to Galena, Sphalerite and Pyrite. We also enjoy collecting rare minerals, and Romania has been good to us in this regards.
Our focus is on regions or specific localities. We have a lot of material from Panasqueira, Bulgaria, Romania, Kosovo and Morocco.
The deciding factor is cost, and some minerals are just beyond our budget. We would like to collect a few Elbaite specimens, but the cost of quality specimens in the small cabinet to cabinet size is very prohibitive.
We have recently purchased a large consignment of fine world-wide minerals, and we are in the process of ‘preping’ and photographing them.
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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4112
Location: Germany
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Posted: Mar 11, 2022 05:24 Post subject: Re: Malachite - Silvia's Collection |
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silvia wrote: | Many thanks for your kind words of encouragement.
My partner and I have many favourites including but not limited to Galena, Sphalerite and Pyrite. We also enjoy collecting rare minerals, and Romania has been good to us in this regards. Our focus is on regions or specific localities. We have a lot of material from Panasqueira, Bulgaria, Romania, Kosovo and Morocco. The deciding factor is cost, and some minerals are just beyond our budget. We would like to collect a few Elbaite specimens, but the cost of quality specimens in the small cabinet to cabinet size is very prohibitive. We have recently purchased a large consignment of fine world-wide minerals, and we are in the process of ‘preping’ and photographing them. | Silvia, I think we have a lot in common concerning our taste in minerals! Maybe except for malachite which I don't collect and the rare minerals, I think the "rarest" mineral in my collection is an ettringite from South Africa ;-) And you're right, the budget is a deciding factor. That's why I have more good quartzes and good fluorites than good tourmalines ;-)
Please keep posting your specimens, this topic here is really informative and entertaining and you are such an enrichment for the FMF community!
Best regards
Tobi
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silvia
Joined: 10 Oct 2021
Posts: 253
Location: UK
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Posted: Mar 14, 2022 15:37 Post subject: Decorator Minerals - Silvia's Collection |
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Classic Peruvian specimen! Hosts mirror bright golden sharp octahedral crystals of pyrite measuring to 8 cm in size.
Mineral: | Pyrite |
Locality: | Huanzala Mine, Huallanca District, Dos de Mayo Province, Huánuco Department, Peru | |
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Dimensions: | 22 cm x 18 cm x 8 cm |
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11902 Time(s) |
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Mineral: | Pyrite |
Locality: | Huanzala Mine, Huallanca District, Dos de Mayo Province, Huánuco Department, Peru | |
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Dimensions: | 22 cm x 18 cm x 8 cm |
Description: |
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11906 Time(s) |
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Mineral: | _ |
Locality: | Huanzala Mine, Huallanca District, Dos de Mayo Province, Huánuco Department, Peru | |
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11896 Time(s) |
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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4112
Location: Germany
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Posted: Mar 15, 2022 06:03 Post subject: Re: Silvia's Collection |
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Spectacular and beautiful, Silvia!
22 x 18 x 8 cm of pyrite - what's the weight of it? ;-)
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silvia
Joined: 10 Oct 2021
Posts: 253
Location: UK
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Posted: Mar 15, 2022 15:27 Post subject: Re: Silvia's Collection |
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Tobi wrote: | Spectacular and beautiful, Silvia!
22 x 18 x 8 cm of pyrite - what's the weight of it? ;-) |
Hello Tobi:
I really enjoy collecting Pyrite - a common mineral, but with lots of character.
The weight of the specimen is 4583 grams or about 10 lbs in the old system.
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