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Collection of Carles Millan
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Tobi




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PostPosted: Oct 09, 2015 08:52    Post subject: Re: Collection of Carles Millan  

A very beautiful specimen, Carles, and with an interesting paragenesis. Very fine!

Tobi
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James
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PostPosted: Oct 09, 2015 09:23    Post subject: Re: Collection of Carles Millan  

Very nice Carles.
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Don Lum




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PostPosted: Oct 09, 2015 10:34    Post subject: Re: Collection of Carles Millan  

Beautiful specimen, Carles. Congratulations.

Don

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Carles Millan
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PostPosted: Oct 09, 2015 13:17    Post subject: Re: Collection of Carles Millan  

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




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PostPosted: Oct 10, 2015 12:14    Post subject: Re: Collection of Carles Millan  

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
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PostPosted: Oct 10, 2015 12:50    Post subject: Re: Collection of Carles Millan  

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




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PostPosted: Oct 10, 2015 13:12    Post subject: Re: Collection of Carles Millan  

Great video of a remarkable specimen which belongs in one of the finest collections.

Don

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Carles Millan
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PostPosted: Nov 03, 2015 08:53    Post subject: Collection of Carles Millan - Copper from Kazakhstan  

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.

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1119M-copper1.jpg
 Mineral: Copper
 Locality:
Itauz Mine, Dzhezkazgan, Karagandy Province, Kazakhstan
 Dimensions: 63 mm x 10 mm - Largest crystal size: 8.5 mm
 Description:
 Viewed:  7632 Time(s)

1119M-copper1.jpg



1119M-copper3.jpg
 Mineral: Copper
 Locality:
Itauz Mine, Dzhezkazgan, Karagandy Province, Kazakhstan
 Dimensions: 63 mm x 10 mm - Largest crystal size: 8.5 mm
 Description:
 Viewed:  7570 Time(s)

1119M-copper3.jpg



1119M-copper2.jpg
 Mineral: Copper
 Locality:
Itauz Mine, Dzhezkazgan, Karagandy Province, Kazakhstan
 Dimensions: 63 mm x 10 mm - Largest crystal size: 8.5 mm
 Description:
 Viewed:  7588 Time(s)

1119M-copper2.jpg



1119M-copper4.jpg
 Mineral: Copper
 Locality:
Itauz Mine, Dzhezkazgan, Karagandy Province, Kazakhstan
 Dimensions: 63 mm x 10 mm - Largest crystal size: 8.5 mm
 Description:
 Viewed:  7587 Time(s)

1119M-copper4.jpg


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crosstimber
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PostPosted: Nov 03, 2015 09:07    Post subject: Re: Collection of Carles Millan  

Very fine copper, Carles.
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Tobi




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PostPosted: Nov 03, 2015 10:43    Post subject: Re: Collection of Carles Millan  

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
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PostPosted: Nov 03, 2015 11:05    Post subject: Re: Collection of Carles Millan  

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
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PostPosted: Nov 03, 2015 11:07    Post subject: Re: Collection of Carles Millan  

crosstimber wrote:
Very fine copper, Carles.

Michael, thanks for your kind comments!
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Don Lum




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PostPosted: Nov 03, 2015 16:16    Post subject: Re: Collection of Carles Millan  

Carles, I echo what Tobi and Michael have said. A very nice native copper specimen.

Don

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Carles Millan
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PostPosted: Nov 03, 2015 16:32    Post subject: Re: Collection of Carles Millan  

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
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PostPosted: Nov 20, 2015 09:11    Post subject: Collection of Carles Millan - Tetrahedrite, pyrite, etc.  

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


2276M-tetrahedrite1.jpg
 Mineral: Tetrahedrite, Pyrite, Quartz, Sphalerite
 Locality:
Mundo Nuevo mining area, Mundo Nuevo, Huamachuco, Sánchez Carrión Province, La Libertad Department, Peru
 Dimensions: 77 mm x 71 mm x 54 mm. Tetrahedrite crystal: 24 mm on edge. Major pyrite crystal: 26 mm on edge
 Description:
 Viewed:  7125 Time(s)

2276M-tetrahedrite1.jpg



2276M-tetrahedrite2.jpg
 Mineral: Tetrahedrite, Pyrite, Quartz, Sphalerite
 Locality:
Mundo Nuevo mining area, Mundo Nuevo, Huamachuco, Sánchez Carrión Province, La Libertad Department, Peru
 Dimensions: 77 mm x 71 mm x 54 mm. Tetrahedrite crystal: 24 mm on edge. Major pyrite crystal: 26 mm on edge
 Description:
 Viewed:  7096 Time(s)

2276M-tetrahedrite2.jpg



2276M-tetrahedrite3.jpg
 Mineral: Tetrahedrite, Pyrite, Quartz, Sphalerite
 Locality:
Mundo Nuevo mining area, Mundo Nuevo, Huamachuco, Sánchez Carrión Province, La Libertad Department, Peru
 Dimensions: 77 mm x 71 mm x 54 mm. Tetrahedrite crystal: 24 mm on edge. Major pyrite crystal: 26 mm on edge
 Description:
Close-up view
 Viewed:  7096 Time(s)

2276M-tetrahedrite3.jpg


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VRigatti




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PostPosted: Nov 20, 2015 19:35    Post subject: Re: Collection of Carles Millan  

Wonderful!
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PostPosted: Nov 27, 2015 05:50    Post subject: Re: Collection of Carles Millan  

Nice paragenesis.
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PostPosted: Nov 28, 2015 16:43    Post subject: Collection of Carles Millan - Ferberite from Yaogangxian  

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.



6670M-ferberite1.jpg
 Mineral: Ferberite, Quartz
 Locality:
Yaogangxian Mine, Yizhang, Chenzhou Prefecture, Hunan Province, China
 Dimensions: 63 mm x 54 mm x 28 mm. Major ferberite crystal: 41 mm wide
 Description:
 Viewed:  6767 Time(s)

6670M-ferberite1.jpg



6670M-ferberite2.jpg
 Mineral: Ferberite, Quartz
 Locality:
Yaogangxian Mine, Yizhang, Chenzhou Prefecture, Hunan Province, China
 Dimensions: 63 mm x 54 mm x 28 mm. Major ferberite crystal: 41 mm wide
 Description:
Rear view
 Viewed:  6770 Time(s)

6670M-ferberite2.jpg


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Tobi




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PostPosted: Nov 29, 2015 07:51    Post subject: Re: Collection of Carles Millan - Ferberite from Yaogangxian  

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
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PostPosted: Dec 06, 2015 08:35    Post subject: Collection of Carles Millan - A half million views  

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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