We use cookies to show content based on your preferences. If you continue to browse you accept their use and installation. More information. >

FMF - Friends of Minerals Forum, discussion and message board
The place to share your mineralogical experiences

FMF English Forum is moderated by John S. White and Peter Megaw
 

Spanish message board






Newest topics and users posts
15 Oct-12:59:28 Re: question about lapis (Dale Hallmark)
15 Oct-12:52:20 Re: collection of tobi (Crosstimber)
15 Oct-11:52:34 Re: question about lapis (Chris Wood)
15 Oct-11:06:05 Re: question about lapis (Dale Hallmark)
15 Oct-10:09:56 Re: in memoriam - john veevaert - album of greetings cards (Tony L. Potucek)
15 Oct-09:59:37 Re: collection of tobi (Tobi)
15 Oct-09:52:45 Re: collection of tobi (Tobi)
15 Oct-09:31:43 Re: collection of michael shaw (Tobi)
15 Oct-09:29:44 Re: collection of tobi (Tobi)
15 Oct-09:12:04 Re: collection of michael shaw (Crosstimber)
15 Oct-08:42:15 Re: question about lapis (Alanbartlett)
15 Oct-08:35:42 Re: in memoriam - john veevaert - album of greetings cards (Jordi Fabre)
15 Oct-08:22:03 Re: question about lapis (Tobi)
15 Oct-02:58:24 We breath it but can we eat it! (Recovering - Academic)
15 Oct-02:47:15 Vexing over verniers (Recovering - Academic)
15 Oct-01:18:52 Cubic pyrite crystals from china (Recovering - Academic)
15 Oct-01:18:47 The mizunaka collection - quartz (Am Mizunaka)
14 Oct-22:48:55 Re: question about lapis (Chris Wood)
14 Oct-22:18:59 Re: question about lapis (Chris Wood)
14 Oct-21:00:48 Re: franjungle collection (Franjungle)
14 Oct-20:54:17 Have you got balls?? (Recovering - Academic)
14 Oct-20:30:12 Re: collection of machines, metals and minerals (Recovering - Academic)
14 Oct-20:01:52 Perusing peru – a crazy arsenopyrite (Recovering - Academic)
14 Oct-16:00:41 Romancing over romania (Recovering - Academic)
14 Oct-13:20:04 Re: question about lapis (Alanbartlett)

For lists of newest topics and postings click here


RSS RSS

View unanswered posts

Why and how to register

Index Index
 FAQFAQ RegisterRegister  Log inLog in
 {Forgotten your password?}Forgotten your password?  

Like
46470


The time now is Oct 15, 2018 14:19

Search for a textSearch for a text   

A general guide for using the Forum with some rules and tips
Collection of Michael Shaw
  Goto page Previous  1, 2, 3, 4, 5, 6 ... 65, 66, 67  Next
  Index -> Collection photos and Collector's page
Like
3510


View previous topic :: View next topic  
Author Message

Jordi Fabre
Overall coordinator of the Forum



Joined: 07 Aug 2006
Posts: 4146
Location: Barcelona


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Jan 21, 2013 18:44    Post subject: Re: Collection of Michael Shaw  

Thanks Michael, it should be OK. Turt is a relatively modern exploitation, so 17 years seems to be too old for Turt, and it is true that Herja supplied some Calcites looking like the famous ones from Turt....
Back to top
Reply to topic Reply with quote
Like
   

crosstimber
Site Admin



Joined: 30 Apr 2008
Posts: 1297
Location: Oklahoma


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Jan 22, 2013 10:21    Post subject: Re: Collection of Michael Shaw  

Jordi Fabre wrote:
Thanks Michael, it should be OK. Turt is a relatively modern exploitation, so 17 years seems to be too old for Turt, and it is true that Herja supplied some Calcites looking like the famous ones from Turt....


Jordi,
After considering the above discussion, I decided to examine the calcite again as I hadn't seen it in hand for some time. One thing that I had forgotten, was the fact that the bottom side of the specimen is covered with small quartz crystals that are partially included with jamesonite. While both of these species occur at Turt, I believe that this is an association that is more characteristic of Herja, ie., "Herja diamonds" That and the fact that you mentioned Turt as being a relatively new exploit, pretty much satisfies whatever doubts I had.
Michael
Back to top
Reply to topic Reply with quote
Like
   

crosstimber
Site Admin



Joined: 30 Apr 2008
Posts: 1297
Location: Oklahoma


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Jan 22, 2013 13:38    Post subject: Re: Collection of Michael Shaw  

Today I will show a few minerals from the well-known mining center at Baia Sprie, which is situated in the mountains about 9 km east of Baia Mare. The history of mining in Baia Sprie dates back to the 13th century, when it was known by it’s Hungarian name, Felsobanya. Through the centuries, numerous pits and shafts exploited the rich deposits. At least 45 minerals have been recorded from Baia Sprie, and it is the type locality for 5 minerals: andorite, felsobanyaite, klebelsbergite, semseyite, and szmikite.


0249 Stibnite (2).jpg
 Description:
Stibnite
Baia Sprie, Maramures, Romania
4.3 x 5.5 cm.
A divergent cluster of steel gray, striated crystals with low angle terminations. The label that came with this specimen attributed its location to the IPEG mine. While there is no documented mention of this mine in the literature, there were numerous shafts that exploited the large orebody at Baia Sprie, and one of these may have been worked by an exploration company named IPEG which apparently stands for "Intreprinderea de Prospectiuni si Explorari Geologice."
 Viewed:  26960 Time(s)

0249 Stibnite (2).jpg



1021 Stibnite (2).jpg
 Description:
Stibnite
Baia Sprie, Maramures, Romania
5.7 x 6.2 cm.
Stibnite crystals with a sword-shaped habit.
 Viewed:  27003 Time(s)

1021 Stibnite (2).jpg



0932 Barite.jpg
 Description:
Baryte
Baia Sprie, Maramures, Romania
7.2 x 8.6 cm.
Large creamy-white bladed crystals to 5.0 cm on edge with minor stibnite on the bottom of the specimen.
 Viewed:  26861 Time(s)

0932 Barite.jpg



1210 Barite (2).jpg
 Description:
Baryte
Baia Sprie, Maramures, Romania
3.7 x 5.4 cm.
Finely-bladed Baryte crystals included with realgar and jamesonite that impart a reddish-orange and gray coloration to the specimen. Mined in 2002.
 Viewed:  26885 Time(s)

1210 Barite (2).jpg


Back to top
Reply to topic Reply with quote
Like
   

crosstimber
Site Admin



Joined: 30 Apr 2008
Posts: 1297
Location: Oklahoma


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Jan 23, 2013 10:56    Post subject: Re: Collection of Michael Shaw  

A few more from Baia Sprie.


1362 Bournonite D7000.jpg
 Description:
Bournonite
No. 6 Mine, Baia Sprie, Maramures, Romania
4.6 x 7.5 cm.
Steel-gray, striated, bournonite crystals to 0.8 cm scattered over a pyrite matrix. Mined in 2001.
 Viewed:  26814 Time(s)

1362 Bournonite D7000.jpg



1386 Realgar.JPG
 Description:
Realgar
No. 5 Mine, Baia Sprie, Maramures, Romania
4.0 x 4.3 cm.
Prismatic realgar crystals with hoppered terminations from the find in Nov./Dec. 2005.
 Viewed:  26865 Time(s)

1386 Realgar.JPG



1364 Scheelite (2).jpg
 Description:
Scheelite
Baia Sprie Mine,
4.1 x 6.3 cm.
Lustrous, smoky-gray, scheelite crystals with small laminar calcite crystals and brassy chalcopyrites. Mined in summer 2002.
 Viewed:  26834 Time(s)

1364 Scheelite (2).jpg



1300 Scheelite.JPG
 Description:
Scheelite
No. 6 Mine, Baia Sprie, Maramures, Romania
2.7 x 4.1 cm.
Unusual sherry-colored scheelite crystal with small calcite rhombs and transparent quartz crystals. Mined in 2001.
 Viewed:  26889 Time(s)

1300 Scheelite.JPG


Back to top
Reply to topic Reply with quote
Like
   

GneissWare




Joined: 07 Mar 2008
Posts: 1272
Location: California


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Jan 23, 2013 12:57    Post subject: Re: Collection of Michael Shaw  

"Stibnite crystals with a sword-shaped habit."

This is a really neat specimen, and quite unusual!
Back to top
Reply to topic Reply with quote
Like
1
   

crosstimber
Site Admin



Joined: 30 Apr 2008
Posts: 1297
Location: Oklahoma


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Jan 24, 2013 11:01    Post subject: Re: Collection of Michael Shaw  

Thanks Bob. The stibnite with the steep angled terminations is one of my favorite Romanian specimens. I have never seen another one quite like it.

I will continue today with a few more specimens from Baia Sprie and travel a bit farther east to Cavnic tomorrow.
Michael



1723 Ferberite on chalcopyrite.jpg
 Description:
Ferberite
Baia Sprie, Maramures, Romania
5.6 x 6.9 cm.
A nice combination specimen with bladed ferberite crystals on brassy chalcopyrite.
 Viewed:  26700 Time(s)

1723 Ferberite on chalcopyrite.jpg



1356 Barite with orpiment.jpg
 Description:
Baryte
Baia Sprie Mine, Baia Sprie, Maramures, Romania
6.1 x 10.0 cm.
Bladed, semi-transparent, Baryte crystals with microscopic inclusions of yellow orpiment. The crystals have unusual modifications which give them a saw-tooth form.
 Viewed:  26707 Time(s)

1356 Barite with orpiment.jpg



1665 Barite on Stibnite.jpg
 Description:
Stibnite
Baia Sprie, Maramures, Romania
6.5 x 8.5 cm.
A classic specimen of splendent, bladed stibnite crystals with lustrous, white Baryte.
 Viewed:  26728 Time(s)

1665 Barite on Stibnite.jpg



1861 Marcasite ps. pyrrhotite.jpg
 Description:
Marcasite ps. pyrrhotite
Baia Sprie, Maramures, Romania
4.2 x 6.2 cm.
Sharp platy pyrrhotite crystals replaced by marcasite. Mined circa 1969.
 Viewed:  26693 Time(s)

1861 Marcasite ps. pyrrhotite.jpg



1968 Barite.jpg
 Description:
Baryte
Baia Sprie, Maramures, Romania
9.5 x 10.5 cm.
Glassy transparent tabular Baryte crystals covering a thin matrix. The Baryte crystals on the back of the specimen are heavily included with jamesonite.
 Viewed:  26714 Time(s)

1968 Barite.jpg


Back to top
Reply to topic Reply with quote
Like
   

crosstimber
Site Admin



Joined: 30 Apr 2008
Posts: 1297
Location: Oklahoma


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Jan 25, 2013 10:42    Post subject: Re: Collection of Michael Shaw  

Today I will start showing a few specimens in my collection from the mines at Cavnic. I'm pretty sure most collectors are familiar with this locality and it's history, but for those who aren't - a little background.

The historic mining town of Cavnic is situated in a valley surrounded by the Gutin Mountains about 25 km east of Baia Mare. Mining at Cavnic dates to the 14th century when the town was known by it’s Hungarian name Kapnik or Kapnikbánya. In early times the deposits were worked for silver, gold and lead, while lead and zinc were sought during modern times. Like Baia Sprie and Herja, the deposits at Cavnic were accessed through numerous mines. The most notable mines during modern times are the Boldut, Cavnic, Roata, and Suior mines. The mineral assemblage at Cavnic was more diverse and more colorful than that of Baia Sprie and Herja with about 70 different species recorded. Cavnic is the type locality for rhodochrosite. All of the mines at Cavnic have been closed since 2008.



0186 Whewellite ps. gypsum.jpg
 Description:
Calcite ps. gypsum
Cavnic, Maramures, Romania
3.4 x 6.2 cm.
A divergent group of gypsum crystals pseudomorphed by grayish white calcite.
 Viewed:  26719 Time(s)

0186 Whewellite ps. gypsum.jpg



0268 Dolomite.jpg
 Description:
Dolomite
Cavnic, Maramures, Romania
6.1 x 8.7 cm.
White to pale tan dolomite rhombs arranged in several mounds on a quartz matrix. Small irridescent brown sphaerosiderites accent the specimen.
 Viewed:  26655 Time(s)

0268 Dolomite.jpg



0514 Barite.jpg
 Description:
Baryte
Cavnic, Maramures, Romania
5.1 x 8.7 cm.
Lustrous pale blue bladed Baryte crystals on light tan Baryte.
 Viewed:  26688 Time(s)

0514 Barite.jpg



0523 Tetrahedrite.jpg
 Description:
Tetrahedrite
Cavnic, Maramures, Romania
7.6 x 10.4 cm.
Metallic steel-gray tetrahedrite scattered over pale pink manganoan calcite on sulfide matrix with tiny transparent quartz crystals.
 Viewed:  26681 Time(s)

0523 Tetrahedrite.jpg


Back to top
Reply to topic Reply with quote
Like
   

crosstimber
Site Admin



Joined: 30 Apr 2008
Posts: 1297
Location: Oklahoma


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Jan 26, 2013 08:43    Post subject: Re: Collection of Michael Shaw  

A few more from Cavnic.


0978 Barite.jpg
 Description:
Baryte
Roata Mine, Cavnic, Maramures, Romania
4.0 x 6.5 cm.
Straw-yellow, bladed Baryte crystals. Mined in 1996.
 Viewed:  26625 Time(s)

0978 Barite.jpg



0977 Quartz.jpg
 Description:
Quartz
Suior Mine, Cavnic, Maramures, Romania
8.2 x 10.1 cm.
Milky quartz crystals with transparent terminations associated with small brassy chalcopyrites.
 Viewed:  26588 Time(s)

0977 Quartz.jpg



0981 Calcite.jpg
 Description:
Calcite
Boldut Mine, Cavnic, Maramures, Romania
5.6 x 7.3 cm.
Tightly packed scalenohedral calcite crystals arranged to form two connected spheres set on a matrix of
lustrous tan dolomite.
 Viewed:  26590 Time(s)

0981 Calcite.jpg


Back to top
Reply to topic Reply with quote
Like
   

crosstimber
Site Admin



Joined: 30 Apr 2008
Posts: 1297
Location: Oklahoma


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Jan 29, 2013 09:49    Post subject: Re: Collection of Michael Shaw  

I haven't been able to post any photos the past couple of days, but I have enjoyed viewing posts from other members. This morning I will resume with more specimens from Cavnic.


1190 Rhodochrosite.jpg
 Description:
Rhodochrosite
Boldut Mine, Cavnic, Maramures, Romania
7.1 x 9.5 cm.
Bladed pink rosettes with a pearly luster covering quartz/sulfide matrix. Collected in 2003.
 Viewed:  26518 Time(s)

1190 Rhodochrosite.jpg



1192 Gypsum.jpg
 Description:
Gypsum
Boldut Mine, Cavnic, Maramures, Romania
5.0 x 7.5 cm.
Stacked divergent white blades on a siderite matrix. Collected in 2002.
 Viewed:  26517 Time(s)

1192 Gypsum.jpg



1348 Chalcostibite.jpg
 Description:
Chalcostibite
Boldut Mine, Cavnic, Maramures, Romania
8.5 x 9.0 cm.
Sharp, bladed aggregates of dark gray, metallic chalcostibite with minor
tetrahedrite on a quartz matrix. Collected from a single find at this location in 2000.
 Viewed:  26495 Time(s)

1348 Chalcostibite.jpg



1348 Chalcostibite (2).jpg
 Description:
Chalcostibite
Boldut Mine, Cavnic, Maramures, Romania
FOV = 4.5 cm.
Close up view of a portion of the above pictured specimen.
 Viewed:  26511 Time(s)

1348 Chalcostibite (2).jpg



1353 Chalcopyrite (2).jpg
 Description:
Chalcopyrite
Boldut Mine, Cavnic, Maramures, Romania
6.0 x 6.1 cm.
Ivory-white, wafer-like calcite crystals with brassy, matte-luster chalcopyrite.
The habit of the calcite is reminiscent of material found in the late 1990s, but this piece was collected in 2005.
 Viewed:  26551 Time(s)

1353 Chalcopyrite (2).jpg


Back to top
Reply to topic Reply with quote
Like
   

crosstimber
Site Admin



Joined: 30 Apr 2008
Posts: 1297
Location: Oklahoma


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Jan 30, 2013 13:50    Post subject: Re: Collection of Michael Shaw  

More from Cavnic.


1399 Barite.jpg
 Description:
Baryte
Boldut Mine, Cavnic, Maramures, Romania
5.1 x 8.2 cm.
 Viewed:  26453 Time(s)

1399 Barite.jpg



1404 Sphalerite.jpg
 Description:
Sphalerite
Boldut Mine, Cavnic, Maramures, Romania
4.5 x 5.0 cm
Lustrous, black sphalerite to 4.5 cm, in combination with transparent quartz and light brown dolomite, Cavnic isn't known for producing good sphalerites. This one was collected in 2004.
 Viewed:  26459 Time(s)

1404 Sphalerite.jpg



1407 Calcite.JPG
 Description:
Calcite
Boldut Mine, Cavnic, Maramures, Romania
4.0x 6.0 cm.
Colorless calcites to 4 cm composed of multiple acute scalenohedral crystals set on a matrix of lustrous tan siderite. Collected in 2001.
 Viewed:  26434 Time(s)

1407 Calcite.JPG



1548 Gypsum (2).jpg
 Description:
Gypsum
Boldut Mine, Cavnic, Maramures, Romania
8.0 x 9.0 cm.
Colorless, transparent crystals to 8.0 cm in length on light brown siderite. Collected in 1990.
 Viewed:  26518 Time(s)

1548 Gypsum (2).jpg


Back to top
Reply to topic Reply with quote
Like
   

Don Lum




Joined: 03 Sep 2012
Posts: 1909
Location: Arkansas


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Jan 30, 2013 14:28    Post subject: Re: Collection of Michael Shaw  

Hi Michael,

Beautiful collection and superb photography!!

_________________
hogwild
Back to top
Reply to topic Reply with quote
Like
1
   

crosstimber
Site Admin



Joined: 30 Apr 2008
Posts: 1297
Location: Oklahoma


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Jan 31, 2013 08:39    Post subject: Re: Collection of Michael Shaw  

Thanks for your comment Don. I'm still drooling over your Graves Mt. rutile. Fabulous specimen.
Michael
Back to top
Reply to topic Reply with quote
Like
   

crosstimber
Site Admin



Joined: 30 Apr 2008
Posts: 1297
Location: Oklahoma


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Jan 31, 2013 16:07    Post subject: Re: Collection of Michael Shaw  

A few more specimens from Cavnic illustrating the diversity of minerals found there.


1351 Chalcopyrite.jpg
 Description:
Chalcopyrite
Boldut Mine, Cavnic, Maramures, Romania
5.8 x 6.9 cm
A spherical aggregate of brassy chalcopyrite with quartz accents. Collected in 2004.
 Viewed:  26329 Time(s)

1351 Chalcopyrite.jpg



1568 Orpiment.jpg
 Description:
Orpiment
Cavnic, Maramures, Romania
6.6 x 7.1 cm.
Orange and brown orpiment partially covering a matrix of white crystallized calcite.
 Viewed:  26369 Time(s)

1568 Orpiment.jpg



1748 Quartz.jpg
 Description:
Quartz
Boldut Mine, Cavnic, Maramures, Romania
3.5 x 5.5 cm.
Transparent quartz, light tan dolomite and small metallic galena cubes. Collected in the 1980s.
 Viewed:  26351 Time(s)

1748 Quartz.jpg



0031 Gypsum var. selenite.jpg
 Description:
Gypsum
Cavnic Mine, Cavnic, Maramures, Romania
10.0 x 18.0 cm.
Creamy to straw-colored, bladed, gypsum crystals covering an undulating, thin shell of quartz. Collected in 1990.
 Viewed:  26331 Time(s)

0031 Gypsum var. selenite.jpg


Back to top
Reply to topic Reply with quote
Like
   

GneissWare




Joined: 07 Mar 2008
Posts: 1272
Location: California


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Jan 31, 2013 16:56    Post subject: Re: Collection of Michael Shaw  

Impressive and broad collection from Romania!
Back to top
Reply to topic Reply with quote
Like
1
   

crosstimber
Site Admin



Joined: 30 Apr 2008
Posts: 1297
Location: Oklahoma


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Feb 01, 2013 10:30    Post subject: Re: Collection of Michael Shaw  

Thank you Bob. I have really enjoyed assembling this Romanian collection over the years. Sadly, specimens from these classic localities are becoming more and more difficult to find each year.

Today's post will finish Cavnic, and I hope to finish Romania tomorrow with a couple of specimens from Baiut as well as several odds and ends from localities outside Maramures.
Michael



1626 Calcite.jpg
 Description:
Calcite
Boldut Mine, Cavnic, Maramures, Romania
5.0 x 5.5 cm.
Pale pink manganoan calcites. The angle at which the two crystals intersect make me think that these are possible twinned on the 'butterfly' law.
 Viewed:  26301 Time(s)

1626 Calcite.jpg



1870 Sphalerite.JPG
 Description:
Sphalerite
Cavnic, Maramures, Romania
6.1 x 7.5 cm.
Lustrous slightly translucent crystals of twinned sphalerite to 2.0 cm. on a matrix of crystallized white calcite and quartz.
 Viewed:  26288 Time(s)

1870 Sphalerite.JPG



1905 Calcite.jpg
 Description:
Calcite
Boldut Mine, Cavnic, Maramures, Romania
8.4 x 12.0 cm.
Light tan spherical calcite aggregates partially covering the terminations of quartz crystals associated with minor pyrite and sphalerite.
 Viewed:  26273 Time(s)

1905 Calcite.jpg



2000 Rhodochrosite.jpg
 Description:
Rhodochrosite
Cavnic, Maramures, Romania
7.7 x 9.5 cm.
Rhodocrosite replacing platy calcite crystals with small metallic black tetrahedrite crystals on a matrix of massive white calcite and tetrahedrite.
 Viewed:  26304 Time(s)

2000 Rhodochrosite.jpg


Back to top
Reply to topic Reply with quote
Like
   

Roger Warin




Joined: 23 Jan 2013
Posts: 884


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Feb 01, 2013 10:54    Post subject: Re: Collection of Michael Shaw  

Superb minerals, amazing pictures.
Roger.
Back to top
Reply to topic Reply with quote
Like
1
   

crosstimber
Site Admin



Joined: 30 Apr 2008
Posts: 1297
Location: Oklahoma


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Feb 02, 2013 13:45    Post subject: Re: Collection of Michael Shaw  

Thank you for your comment Roger.

Today I will finish up Romania with a stibnite specimen from Baiut, the easternmost locality in the Maramures district. Baiut is situated about 32 km southeast of Baia Mare and is known for its thick stibnite crystals with flattish terminations. Although 51 different species have been recorded there, apparently there are few minerals of importance to the collector apart from stibnite. Or, perhaps the other minerals never reached the U.S. markets. For whatever reason, one does not see much other than stibnite from this location.

I would also like to show a few images of specimens in my collection that are from other areas of Romania. The Ocna de Fier Mine in the Banat Mts. has been mined for iron ore since the middle ages. Although never as common as specimens from Maramures, this Fe-Cu skarn-type deposit has produced some nice minerals. Lastly, what collection from Romania would be complete without a specimen from the ancient mines at Rosia Montana.

Regards,
Michael



1438 Stibnite.jpg
 Description:
Stibnite
Poiana Botizi Mine, Baiut, Maramures, Romania
5.4 x 6.5 cm.
Stout lead-gray stibnite crystals with low angle terminations typical of the locality. Collected in the 1980s.
 Viewed:  26206 Time(s)

1438 Stibnite.jpg



0070 Chalcopyrite.jpg
 Description:
Chalcopyrite
Rodna, Bistrita-Nasaud Co., Romania
6.5 x 9.0 cm.
A large chalcopyrite crystal with flat gray quartz pseudomorphs after pyrrhotite and small black tetrahedrites crystals.
 Viewed:  26207 Time(s)

0070 Chalcopyrite.jpg



1749 Hematite.jpg
 Description:
Hematite
Ocna de Fier, Banat Mts., Caras-Severin Co., Romania
4.3 x 6.0 cm.
Finely bladed lustrous black hematite rosettes associated with colorless quartz crystals. Collected in the 1970s.
 Viewed:  26220 Time(s)

1749 Hematite.jpg



1363 Calcite.jpg
 Description:
Calcite
Ocna de Fier, Banat Mts., Caras-Severin Co., Romania
4.6 x 7.0 cm.
A group of creamy white scalenohedrons with a reddish tinge due to hematite.
 Viewed:  26256 Time(s)

1363 Calcite.jpg



Gold - Rosia Montana.jpg
 Description:
Gold
Rosia Montana, Alba Co., Romania
3.2 cm.
Formerly known as Verespatak, Rosia Montana was mined by the Romans 2000 years ago.
 Viewed:  26206 Time(s)

Gold - Rosia Montana.jpg


Back to top
Reply to topic Reply with quote
Like
   

crosstimber
Site Admin



Joined: 30 Apr 2008
Posts: 1297
Location: Oklahoma


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Feb 03, 2013 17:06    Post subject: Re: Collection of Michael Shaw  

Now that I have finished showing much of my Romanian collection, I tried to decide where to go next. While browsing through some photos, I came across a few Tsumeb pieces that I thought were worthy of posting. At one time I gave serious thought to assembling a Tsumeb collection. I did manage to put together a modest suite of minerals from Tsumeb, but since there were quite a few other collectors that already had fantastic Tsumeb collections, I decided to focus my energies elsewhere. That said, no worldwide collection would be complete without a few representative pieces from one of the world's greatest mineral localities.
Michael



0317 Calcite - Tsumeb.jpg
 Description:
Calcite
Tsumeb Mine, Tsumeb, Namibia
5.7 x 8.1 cm.
Intergrown rhombs of colorless calcite to 1.5 cm on edge dusted with sparkly light green duftite.
 Viewed:  26280 Time(s)

0317 Calcite - Tsumeb.jpg



0626 Malachite ps. azurite.jpg
 Description:
Malachite ps. azurite
Tsumeb Mine, Tsumeb, Namibia
4.6 x 4.5 cm.
Sharply formed bright green malachite crystals with a feathery chatoyance pseudomorphing azurite.
 Viewed:  26177 Time(s)

0626 Malachite ps. azurite.jpg



0844a Mottramite.jpg
 Description:
Mottramite
Tsumeb Mine, Tsumeb, Namibia
4.5 x 7.3 cm.
Arborescent olive-green mottramite on flattened rhombs of colorless calcite, some of which have reddish tints due to included hematite.
 Viewed:  26190 Time(s)

0844a Mottramite.jpg



0766 Azurite.jpg
 Description:
Azurite
Tsumeb Mine, Tsumeb, Namibia
4.5 x 6.7 cm.
Parallel growth of lustrous dark blue azurite crystals partially altered to malachite.
 Viewed:  26215 Time(s)

0766 Azurite.jpg


Back to top
Reply to topic Reply with quote
Like
   

crosstimber
Site Admin



Joined: 30 Apr 2008
Posts: 1297
Location: Oklahoma


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Feb 04, 2013 11:53    Post subject: Re: Collection of Michael Shaw  

Today's post includes a few more of the common species at Tsumeb. I have photographed the dioptase on several occasions, and while the color is pretty close, no amount of adjustment I make renders a really true color. The last piece is one that I acquired recently, more for it's interest as a pseudomorph. It was once in the collection of Ed Swoboda and the previous labels that accompanied the specimen had some interesting notes. Apparently, noted Tsumeb dealers, the Zwiebel's, acquired a small lot of interesting pseudomorphs from a miner in mid-1980. Among them were a few specimens of willemite after azurite and smithsonite after cerussite. This piece was among the 20 or so specimens from that find. That pretty much finishes my Tsumeb collection, so I'm thinking maybe Dal'negorsk next.
Michael



0223 Dioptase.jpg
 Description:
Dioptase
Tsumeb Mine, 32 Level, Tsumeb, Namibia
4.5 x 6.7 cm
Lustrous, dark emerald green crystals to 1.2 cm on rhombic white calcite.
 Viewed:  26138 Time(s)

0223 Dioptase.jpg



0837 Smithsonite-Co.jpg
 Description:
Smithsonite
Tsumeb Mine, Tsumeb, Namibia
6.3 x 8.3 cm.
Small pink rhombs of cobaltian calcite covering a sulfide rich matrix.
 Viewed:  26125 Time(s)

0837 Smithsonite-Co.jpg



0854 Smithsonite-Cu.jpg
 Description:
Smithsonite
Tsumeb Mine, Tsumeb, Namibia
4.4 x 6.3 cm.
Botryoidal cuprian smithsonite associated with yellow mimetite.
 Viewed:  26134 Time(s)

0854 Smithsonite-Cu.jpg



0862 Smithsonite.jpg
 Description:
Smithsonite
Tsumeb Mine, Tsumeb, Namibia
4.0 x 7.8 cm.
Pale tan rhombs of smithsonite to 1.2 cm.
 Viewed:  26110 Time(s)

0862 Smithsonite.jpg



0845 Mimetite.jpg
 Description:
Mimetite
Tsumeb Mine, Tsumeb, Namibia
5.5 x 8.7 cm.
Spiky yellow mimetite crystals averaging 4-6 mm in length with bubbly white calcite, minor malachite and reddish iron oxide included calcite.
 Viewed:  26120 Time(s)

0845 Mimetite.jpg



1169 Cerussite (2).jpg
 Description:
Cerussite
Tsumeb Mine, Tsumeb, Namibia
2.5 x 4.1 cm.
Colorless to smoky gray twinned cerussite.
 Viewed:  26129 Time(s)

1169 Cerussite (2).jpg



1993 Smithsonite ps. cerussite.jpg
 Description:
Smithsonite ps. cerussite
Tsumeb Mine, Tsumeb, Namibia
4.3 x 4.6 cm.
Drusy green cuprian smithsonite replacing cerussite with pink dolomite and colorless calcite on the reverse side.
 Viewed:  26111 Time(s)

1993 Smithsonite ps. cerussite.jpg


Back to top
Reply to topic Reply with quote
Like
   

crosstimber
Site Admin



Joined: 30 Apr 2008
Posts: 1297
Location: Oklahoma


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Feb 05, 2013 16:20    Post subject: Re: Collection of Michael Shaw  

Today I will start with a few specimens from Dal'negorsk - one of my top 10 favorite localities.


1273 Calcite.jpg
 Description:
Calcite
Verchniy Mine, Dal'negorsk, Primorskiy Kray, Russia
4.1 x 4.6 cm.
Two generations of scalenohedral calcites ranging in color from honey-colored to colorless, with rod-shaped crystals of milky-white aragonite.
 Viewed:  26027 Time(s)

1273 Calcite.jpg



1841 Calcite on sphalerite.jpg
 Description:
Calcite
Vtoroy Sovietskiy Mine, Dal'negorsk, Primorskiy Kray, Russia
6.2 x 8.4 cm.
Multiple stacks of pale pink lenticular calcites on resinous dark brown sphalerite with several small transparent quartz crystals. Collected in winter 2011.
 Viewed:  26043 Time(s)

1841 Calcite on sphalerite.jpg



0755 Fluorite.jpg
 Description:
Fluorite
1st Sovietskiy Mine, Dal'negorsk, Primorskiy Kray, Russia
8.8 x 12.4 cm.
Frosted green octahedral fluorite crystals to 1.8 cm on edge covering a layer of drusy white quartz with colorless calcite.
 Viewed:  26071 Time(s)

0755 Fluorite.jpg


Back to top
Reply to topic Reply with quote
Like
   
Display posts from previous:   
   Index -> Collection photos and Collector's page   All times are GMT - 5 Hours
Page 5 of 67
  Goto page Previous  1, 2, 3, 4, 5, 6 ... 65, 66, 67  Next  

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum


All pictures, text, design © Forum FMF 2006-2018


Powered by FMF