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Joseph DOliveira
Joined: 29 Jan 2012
Posts: 311
Location: Hanmer, Ontario
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 Posted: Aug 25, 2023 16:01 Post subject: Re: Collection of Joseph D'Oliveira |
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A couple of small pieces added to my Canadian collection.
| Mineral: | Sphalerite |
| Locality: | | Sa Dena Hes Mine, Watson Lake, Watson Lake District, Yukon, British Columbia, Canada |  |
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| Dimensions: | 5x3.5x2.6 cm's |
| Description: |
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| Viewed: |
9309 Time(s) |
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| Mineral: | Galena |
| Locality: | | Sa Dena Hes Mine, Watson Lake, Watson Lake District, Yukon, British Columbia, Canada | |
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| Dimensions: | 5.1x3x2.8 cm's |
| Description: |
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| Viewed: |
9315 Time(s) |
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Joseph D'Oliveira
Hanmer, Ontario
Canada |
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Joseph DOliveira
Joined: 29 Jan 2012
Posts: 311
Location: Hanmer, Ontario
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| Posted: Sep 18, 2023 16:30 Post subject: Re: Collection of Joseph D'Oliveira |
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A nice combination specimen.
| Mineral: | Baryte |
| Locality: | | Moscona Mine, "Corte del Agua", El Llano, Solís, Corvera de Asturias, Comarca Avilés, Principality of Asturias (Asturias), Spain | |
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| Dimensions: | 10.5 x 9 x 5 cm's |
| Description: |
| A nice specimen with barite and calcite on a calcite matrix covered by druzy fluorite. |
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| Viewed: |
9214 Time(s) |
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Joseph D'Oliveira
Hanmer, Ontario
Canada |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2228
Location: Oklahoma
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| Posted: Sep 18, 2023 18:53 Post subject: Re: Collection of Joseph D'Oliveira |
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| Joseph DOliveira wrote: | | A nice combination specimen. |
Joseph, nice combination indeed. Very attractive specimen.
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Don Lum
Joined: 03 Sep 2012
Posts: 2900
Location: Arkansas
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| Posted: Sep 18, 2023 19:41 Post subject: Re: Collection of Joseph D'Oliveira |
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Joseph, that really is a pretty specimen. Congratulations.
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hogwild |
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Joseph DOliveira
Joined: 29 Jan 2012
Posts: 311
Location: Hanmer, Ontario
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| Posted: Sep 18, 2023 21:30 Post subject: Re: Collection of Joseph D'Oliveira |
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Thanks Don and Michael, appreciated.
Joseph
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Joseph D'Oliveira
Hanmer, Ontario
Canada |
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James Catmur
Site Admin
Joined: 14 Sep 2006
Posts: 1463
Location: Cambridge
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| Posted: Sep 19, 2023 07:56 Post subject: Re: Collection of Joseph D'Oliveira |
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| The blue Barytes from the Moscona are nice - there was a huge one in the Smithsonian which may well still be there
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Joseph DOliveira
Joined: 29 Jan 2012
Posts: 311
Location: Hanmer, Ontario
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| Posted: Apr 18, 2024 09:23 Post subject: Re: Collection of Joseph D'Oliveira |
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A new addition to my collection.
| Mineral: | Chrysocolla |
| Locality: | | L'Etoile du Congo Mine, Lubumbashi (Elizabethville), Katanga Copper Crescent, Haut-Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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| Dimensions: | 10 x 8.5 x 6 cm's |
| Description: |
| Chrysocolla on botryoidal malachite. |
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| Viewed: |
6817 Time(s) |
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Joseph D'Oliveira
Hanmer, Ontario
Canada |
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Joseph DOliveira
Joined: 29 Jan 2012
Posts: 311
Location: Hanmer, Ontario
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| Posted: Apr 25, 2024 19:17 Post subject: Re: Collection of Joseph D'Oliveira |
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Recent addition.
| Mineral: | Dyscrasite with Löllingite |
| Locality: | | Bouismas Mine, Agdz, Bou Azzer mining district, Zagora Province, Drâa-Tafilalet Region, Morocco | |
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| Dimensions: | 6.3x4.4x6.5 cm's |
| Description: |
| Beautiful combination specimen of Dyscrasite with Löllingite |
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| Viewed: |
6703 Time(s) |
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| Mineral: | Malachite |
| Locality: | | Bisbee, Warren District, Mule Mountains, Cochise County, Arizona, USA | |
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| Dimensions: | 7x5.3x1.5 cm's |
| Description: |
| Botryoidal malachite with a velvet texture. |
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| Viewed: |
6683 Time(s) |
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Joseph D'Oliveira
Hanmer, Ontario
Canada |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 5025
Location: Barcelona
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| Posted: Apr 26, 2024 02:36 Post subject: Re: Collection of Joseph D'Oliveira |
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| Joseph DOliveira wrote: | Mineral: Acanthite
Locality: Bouismas Mine, Agdz, Bou Azzer mining district, Zagora Province, Drâa-Tafilalet Region, Morocco
Dimensions: 6.3x4.4x6.5 cm's
Description: Beautiful combination specimen of acanthite with silver.
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I have never seen Acanthite from Bouismas. From the photo, it appears that the crystals are perhaps Silver, possibly coated by Arsenopyrite or Löllingite, but the main crystals do not seem to me to be Acanthite.
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Joseph DOliveira
Joined: 29 Jan 2012
Posts: 311
Location: Hanmer, Ontario
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| Posted: Apr 26, 2024 07:54 Post subject: Re: Collection of Joseph D'Oliveira |
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| Jordi Fabre wrote: | | Joseph DOliveira wrote: | Mineral: Acanthite
Locality: Bouismas Mine, Agdz, Bou Azzer mining district, Zagora Province, Drâa-Tafilalet Region, Morocco
Dimensions: 6.3x4.4x6.5 cm's
Description: Beautiful combination specimen of acanthite with silver.
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I have never seen Acanthite from Bouismas. From the photo, it appears that the crystals are perhaps Silver, possibly coated by Arsenopyrite or Löllingite, but the main crystals do not seem to me to be Acanthite. |
I can only give the location as represented by the seller but I agree that the Imiter mine is more likely for this piece if it is acanthite. Having said that, I will be taking the specimen to our local university for analysis in the next few weeks and will post the results. As a Moroccan specimen, I would defer to your asessment and you can make whatever changes you feel necessary in the posting. I've just returned from Tucson and have been processing specimens for the last few weeks, I haven't had the time to to fully vet each one. My apologies for the misinformation.
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Joseph D'Oliveira
Hanmer, Ontario
Canada |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 5025
Location: Barcelona
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| Posted: Apr 26, 2024 10:27 Post subject: Re: Collection of Joseph D'Oliveira |
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No fault lies with you at all and If, as I suspect, it's a finely crystallized Silver, congratulations! it's much better than a 'common' Acanthite.
There's no doubt the piece is from Bouismas; the etched Calcite is very significant.
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Joseph DOliveira
Joined: 29 Jan 2012
Posts: 311
Location: Hanmer, Ontario
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| Posted: Apr 26, 2024 10:41 Post subject: Re: Collection of Joseph D'Oliveira |
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| Jordi Fabre wrote: | No fault lies with you at all and If, as I suspect, it's a finely crystallized Silver, congratulations! it's much better than a 'common' Acanthite.
There's no doubt the piece is from Bouismas; the etched Calcite is very significant. |
Thank you Jordi, much appreciated. You can change the mineral name to silver if you wish, pending the final outcome.
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Done. Thanks.
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Joseph D'Oliveira
Hanmer, Ontario
Canada |
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Joseph DOliveira
Joined: 29 Jan 2012
Posts: 311
Location: Hanmer, Ontario
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| Posted: Apr 27, 2024 20:28 Post subject: Re: Collection of Joseph D'Oliveira |
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From one of my favorite localities.
| Mineral: | Magnetite |
| Locality: | | Huanggang Mines, Hexigten Banner (Kèshíkèténg Qí), Chifeng (Ulanhad), Inner Mongolia Autonomous Region, China | |
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| Dimensions: | 13x9x2.2 cm's |
| Description: |
| Lustrous plate of magnetite crystals. The back of the specimen has areas with druzy, micro crystals of semi transparent, amber colored helvines. |
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| Viewed: |
6378 Time(s) |
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Joseph D'Oliveira
Hanmer, Ontario
Canada |
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Joseph DOliveira
Joined: 29 Jan 2012
Posts: 311
Location: Hanmer, Ontario
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| Posted: Apr 30, 2024 11:44 Post subject: Re: Collection of Joseph D'Oliveira |
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More of my recent additions.
| Mineral: | Chalcopyrite |
| Locality: | | Durango, Mexico | |
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| Dimensions: | 6.5x5.4x2 cm's |
| Description: |
| Highly lustrous crystals on a matrix of druzy quartz crystals. This specimen is from the A. Parker collection in Arizona, unfortunately the exact locality was not detailed on the collection card. |
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| Viewed: |
6146 Time(s) |
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| Mineral: | Enargite |
| Locality: | | Longfellow Mine, Red Mountain District, San Juan County, Colorado, USA | |
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| Dimensions: | 7x5x2.4 cm's |
| Description: |
| Lustrous black enargite crystals with minor calcite, also from the A. Parker collection in Arizona. |
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| Viewed: |
6176 Time(s) |
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Joseph D'Oliveira
Hanmer, Ontario
Canada |
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Joseph DOliveira
Joined: 29 Jan 2012
Posts: 311
Location: Hanmer, Ontario
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| Posted: May 02, 2024 21:25 Post subject: Re: Collection of Joseph D'Oliveira |
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An oddity that I purchased recently.
| Mineral: | Pyrite coated by Molybdenite |
| Locality: | | Rico Claims, Grayback District (Russell District), Costilla County, Colorado, USA | |
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| Dimensions: | 6.5x4.5x2.5 cm's |
| Description: |
| I purchased this piece as an oddity with hopes of getting some clarification at a later date. It is a cluster of pyrite crystals with a silver coating of what is purported to be "bravoite" (FeNi)S2.There appears to be some controversy with the specimens from this particular locality and I haven't been able to fully determine if the coating is actually just a coating such as galena. |
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| Viewed: |
5983 Time(s) |
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Joseph D'Oliveira
Hanmer, Ontario
Canada |
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