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James Catmur
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Joined: 14 Sep 2006
Posts: 651
Location: Cambridge
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 Posted: Oct 09, 2015 09:23 Post subject: Re: Collection of Carles Millan |
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| Very nice Carles.
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Don Lum
Joined: 03 Sep 2012
Posts: 2144
Location: Arkansas
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| Posted: Oct 09, 2015 10:34 Post subject: Re: Collection of Carles Millan |
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Beautiful specimen, Carles. Congratulations.
Don
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Carles Millan
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Joined: 05 May 2007
Posts: 1297
Location: Catalonia
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| Posted: Oct 09, 2015 13:17 Post subject: Re: Collection of Carles Millan |
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To Tobi, James and Don
Thanks a lot for your kind comments. I'm very glad you like the pyrite.
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Tobi
Joined: 07 Apr 2009
Posts: 3149
Location: Good Old Germany
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| Posted: Oct 10, 2015 12:14 Post subject: Re: Collection of Carles Millan |
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| Carles Millan wrote: | | To Tobi, James and Don. Thanks a lot for your kind comments. I'm very glad you like the pyrite. |
There are from my point of view several reasons to like that specimen:
- It has a nice shape with that large main crystal sitting on the top.
- The matrix is also pyrite, though this may lower the colour contrast, the specimen looks very classy and I guess this are also two generations (?) of pyrite growth which would make this paragenesis even more interesting.
- There are both black and white minerals on it which compensate that there's actually not much contrast.
Conclusion: A very fine and presentable pyrite specimen :)
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Carles Millan
Site Admin
Joined: 05 May 2007
Posts: 1297
Location: Catalonia
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| Posted: Oct 10, 2015 12:50 Post subject: Re: Collection of Carles Millan |
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| Tobi wrote: | There are from my point of view several reasons to like that specimen:
- It has a nice shape with that large main crystal sitting on the top.
- The matrix is also pyrite, though this may lower the colour contrast, the specimen looks very classy and I guess this are also two generations (?) of pyrite growth which would make this paragenesis even more interesting.
- There are both black and white minerals on it which compensate that there's actually not much contrast.
Conclusion: A very fine and presentable pyrite specimen :) |
Tobi, thanks once again, now for spending your valuable time in such a long and detailed review. I think your analysis is very interesting.
Perhaps someone may want to see how the specimen looks like from the other side by just watching a 32-second video at https://www.youtube.com/embed/pmDsGSHSbjg?autoplay=1&rel=0&loop=1&playlist=pmDsGSHSbjg
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Don Lum
Joined: 03 Sep 2012
Posts: 2144
Location: Arkansas
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| Posted: Oct 10, 2015 13:12 Post subject: Re: Collection of Carles Millan |
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Great video of a remarkable specimen which belongs in one of the finest collections.
Don
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Carles Millan
Site Admin
Joined: 05 May 2007
Posts: 1297
Location: Catalonia
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| Posted: Nov 03, 2015 08:53 Post subject: Collection of Carles Millan - Copper from Kazakhstan |
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Copper
This specimen is a chain of three-dimensional and untwinned quasi octahedral {111}, reddish brown color, copper crystals stacked one on top of another. The crystals show very well defined faces and edges, which is somewhat unusual with this species. There also is a natural deep black oxidation patina on the lateral and back sides that I think might be tenorite (CuO) rather than cuprite.
Field collected in year 2009.
Overall size: 63 mm x 10 mm. Major crystal size: 8.5 mm wide.
Weight: About 13 g.
Itauz Mine, Zhilandy group, Karagandy Province, Kazakhstan.
Unless otherwise noted, photos are copyright © Carles Millan. Reproduction allowed as long as the author's name is cited and the image not modified (if it is not too much to ask...). Creative Commons Attribution Licence - Some Rights Reserved.
My Personal Site
| Mineral: | Copper |
| Locality: | | Itauz Mine, Dzhezkazgan, Karaganda Region, Kazakhstan |  |
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| Dimensions: | 63 mm x 10 mm - Largest crystal size: 8.5 mm |
| Description: |
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14572 Time(s) |
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| Mineral: | Copper |
| Locality: | | Itauz Mine, Dzhezkazgan, Karaganda Region, Kazakhstan | |
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| Dimensions: | 63 mm x 10 mm - Largest crystal size: 8.5 mm |
| Description: |
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| Viewed: |
14459 Time(s) |
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| Mineral: | Copper |
| Locality: | | Itauz Mine, Dzhezkazgan, Karaganda Region, Kazakhstan | |
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| Dimensions: | 63 mm x 10 mm - Largest crystal size: 8.5 mm |
| Description: |
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| Viewed: |
14473 Time(s) |
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| Mineral: | Copper |
| Locality: | | Itauz Mine, Dzhezkazgan, Karaganda Region, Kazakhstan | |
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| Dimensions: | 63 mm x 10 mm - Largest crystal size: 8.5 mm |
| Description: |
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| Viewed: |
14494 Time(s) |
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Michael Shaw
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Joined: 30 Apr 2008
Posts: 1466
Location: Oklahoma
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| Posted: Nov 03, 2015 09:07 Post subject: Re: Collection of Carles Millan |
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| Very fine copper, Carles.
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Tobi
Joined: 07 Apr 2009
Posts: 3149
Location: Good Old Germany
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| Posted: Nov 03, 2015 10:43 Post subject: Re: Collection of Carles Millan |
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Indeed a very (!) good sample of copper with remarkably well defined crystals, the colour change makes it even more attractive. Usually I don't like native copper specimens, but this one is an eyecatcher, good choice.
| Carles Millan wrote: | | Field collected in year 2009. |
By you?
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Carles Millan
Site Admin
Joined: 05 May 2007
Posts: 1297
Location: Catalonia
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| Posted: Nov 03, 2015 11:05 Post subject: Re: Collection of Carles Millan |
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| Tobi wrote: | Indeed a very (!) good sample of copper with remarkably well defined crystals, the colour change makes it even more attractive. Usually I don't like native copper specimens, but this one is an eyecatcher, good choice.
| Carles Millan wrote: | | Field collected in year 2009. |
By you? |
By someone else! I've never been to Kazakhstan...
But I'm very glad you like it.
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Carles Millan
Site Admin
Joined: 05 May 2007
Posts: 1297
Location: Catalonia
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| Posted: Nov 03, 2015 11:07 Post subject: Re: Collection of Carles Millan |
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| crosstimber wrote: | | Very fine copper, Carles. |
Michael, thanks for your kind comments!
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Don Lum
Joined: 03 Sep 2012
Posts: 2144
Location: Arkansas
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| Posted: Nov 03, 2015 16:16 Post subject: Re: Collection of Carles Millan |
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Carles, I echo what Tobi and Michael have said. A very nice native copper specimen.
Don
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Carles Millan
Site Admin
Joined: 05 May 2007
Posts: 1297
Location: Catalonia
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| Posted: Nov 03, 2015 16:32 Post subject: Re: Collection of Carles Millan |
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| Don Lum wrote: | | Carles, I echo what Tobi and Michael have said. A very nice native copper specimen. Don |
Thanks a lot, Don, I much appreciate your opinion!
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Carles Millan
Site Admin
Joined: 05 May 2007
Posts: 1297
Location: Catalonia
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| Posted: Nov 20, 2015 09:11 Post subject: Collection of Carles Millan - Tetrahedrite, pyrite, etc. |
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Tetrahedrite, pyrite, quartz, sphalerite
A sharp and well defined tetrahedrite tetrahedron {111} sitting on top of two lustrous and finely striated cubic {100} pyrite crystals, accompanied with a lot of colorless quartz and several sphalerite crystals here and there. Both pyrite crystals show a face along an edge that probably belongs to the pyritohedron habit {210}. Overall size: 77 mm x 71 mm x 54 mm. Tetrahedrite crystal: 24 mm on edge. Major pyrite crystal: 26 mm on edge. Weight: 273 g.
Actually a member of the series tennantite-tetrahedrite. So it might be from a Sb-rich tennantite to an As-rich tetrahedrite, somewhere between.
This specimen was involved in at least five generations. It is evident that the pyrite crystals were the first to grow. Then came the sphalerite and next the tetrahedrite, since a small crystal of the latter is placed on a crystal of the former. Finally the quartz grew over all of them. But still a fifth generation had to take place because about a dozen small pyrite cubes can be seen perched on the quartz crystals.
Mundo Nuevo mining area, Mundo Nuevo, Huamachuco, Sánchez Carrión Province, La Libertad Department, Peru.
Unless otherwise noted, photos are copyright © Carles Millan. Reproduction allowed as long as the author's name is cited and the image not modified (if it is not too much to ask...). Creative Commons Attribution Licence - Some Rights Reserved.
My Personal Site
| Mineral: | Tetrahedrite, Pyrite, Quartz, Sphalerite |
| Locality: | | Mundo Nuevo mining area, Mundo Nuevo, Huamachuco, Sánchez Carrión Province, La Libertad Department, Peru | |
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| Dimensions: | 77 mm x 71 mm x 54 mm. Tetrahedrite crystal: 24 mm on edge. Major pyrite crystal: 26 mm on edge |
| Description: |
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| Viewed: |
14198 Time(s) |
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| Mineral: | Tetrahedrite, Pyrite, Quartz, Sphalerite |
| Locality: | | Mundo Nuevo mining area, Mundo Nuevo, Huamachuco, Sánchez Carrión Province, La Libertad Department, Peru | |
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| Dimensions: | 77 mm x 71 mm x 54 mm. Tetrahedrite crystal: 24 mm on edge. Major pyrite crystal: 26 mm on edge |
| Description: |
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| Viewed: |
13946 Time(s) |
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| Mineral: | Tetrahedrite, Pyrite, Quartz, Sphalerite |
| Locality: | | Mundo Nuevo mining area, Mundo Nuevo, Huamachuco, Sánchez Carrión Province, La Libertad Department, Peru | |
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| Dimensions: | 77 mm x 71 mm x 54 mm. Tetrahedrite crystal: 24 mm on edge. Major pyrite crystal: 26 mm on edge |
| Description: |
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| Viewed: |
13966 Time(s) |
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VRigatti
Joined: 19 Dec 2009
Posts: 81
Location: Denver, CO
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| Posted: Nov 20, 2015 19:35 Post subject: Re: Collection of Carles Millan |
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| Wonderful!
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Enrique Llorens
Joined: 02 Jun 2011
Posts: 282
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| Posted: Nov 27, 2015 05:50 Post subject: Re: Collection of Carles Millan |
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| Nice paragenesis.
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Carles Millan
Site Admin
Joined: 05 May 2007
Posts: 1297
Location: Catalonia
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| Posted: Nov 28, 2015 16:43 Post subject: Collection of Carles Millan - Ferberite from Yaogangxian |
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Ferberite, quartz
Tabular black ferberite crystals associated with each other like pages in a half open book, with several white quartz crystals at the bottom. Overall size: 63 mm x 54 mm x 28 mm. Major ferberite crystal: 41 mm wide. Weight: 233 g.
Yaogangxian Mine, Yizhang, Chenzhou Prefecture, Hunan Province, China.
Unless otherwise noted, photos are copyright © Carles Millan. Reproduction allowed as long as the author's name is cited and the image not modified (if it is not too much to ask...). Creative Commons Attribution Licence - Some Rights Reserved.
| Mineral: | Ferberite, Quartz |
| Locality: | | Yaogangxian Mine, Yizhang, Chenzhou Prefecture, Hunan Province, China | |
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| Dimensions: | 63 mm x 54 mm x 28 mm. Major ferberite crystal: 41 mm wide |
| Description: |
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| Viewed: |
13666 Time(s) |
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| Mineral: | Ferberite, Quartz |
| Locality: | | Yaogangxian Mine, Yizhang, Chenzhou Prefecture, Hunan Province, China | |
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| Dimensions: | 63 mm x 54 mm x 28 mm. Major ferberite crystal: 41 mm wide |
| Description: |
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| Viewed: |
13649 Time(s) |
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Tobi
Joined: 07 Apr 2009
Posts: 3149
Location: Good Old Germany
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| Posted: Nov 29, 2015 07:51 Post subject: Re: Collection of Carles Millan - Ferberite from Yaogangxian |
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| Carles Millan wrote: | Ferberite, quartz
Tabular black ferberite crystals associated with each other like pages in a half open book, with several white quartz crystals at the bottom. Yaogangxian Mine, Yizhang, Chenzhou Prefecture, Hunan Province, China. |
I actually do not collect ferberite and I never had any interest in that mineral ... but that specimen is really appealing: Well-defined crystals, a fine shape of the whole specimen, a nice colour contrast - all in all a very beautiful specimen and a fine addition to your collection, congratulations :-)
Tobi
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Carles Millan
Site Admin
Joined: 05 May 2007
Posts: 1297
Location: Catalonia
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| Posted: Dec 06, 2015 08:35 Post subject: Collection of Carles Millan - A half million views |
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This early morning this topic has reached the magic number of 500,000 views. I think a half million is a lot for a mere medium quality collection, so I feel a must to send a big thank you to all of you who have spent your valuable leisure time browsing my pages. And especially to Jordi Fabre for making it possible. I hope more photos will come in in the not distant future.
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Al carrer Duran i Bas, si no hi vas no t'hi duran. |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4370
Location: Barcelona
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