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Collection of Carles Millan
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Carles Millan
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PostPosted: Dec 06, 2016 16:44    Post subject: Re: Collection of Carles Millan  

I forgot. Sorry!

The human visible spectrum includes wavelengths from about 390 nm to 700 nm. We cannot see light from below and above such range (which would be UV and IR light respectively). Other animal species can see slightly different wavelengths. But the range that the cameras see must be even more different. Not to mention the big difference of resolutions. So it's no surprise that the photos we get don't match the images we directly see.
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Carles Millan
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PostPosted: May 23, 2017 09:19    Post subject: Collection of Carles Millan - Cassiterite from Bolivia  

Cassiterite, quartz

Group of honey-brown, translucent when backlit, cassiterite crystals set on a matrix of crystallized quartz. Several of them are twinned. No damage. Overall size: 98 mm x 90 mm x 72 mm. Main cassiterite crystal: 40 mm wide. Weight: 955 g.

Viloco Mine, Loayza Province, La Paz Department, Bolivia.

Unless otherwise noted, all photos are copyright by 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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4451M-cassiterite1.jpg
 Mineral: Cassiterite, Quartz
 Locality:
Viloco Mine, Loayza Province, La Paz Department, Bolivia
 Dimensions: 98 mm x 90 mm x 72 mm. Main cassiterite crystal: 40 mm wide
 Description:
 Viewed:  2564 Time(s)

4451M-cassiterite1.jpg



4451M-cassiterite2.jpg
 Mineral: Cassiterite, Quartz
 Locality:
Viloco Mine, Loayza Province, La Paz Department, Bolivia
 Dimensions: 98 mm x 90 mm x 72 mm. Main cassiterite crystal: 40 mm wide
 Description:
 Viewed:  2547 Time(s)

4451M-cassiterite2.jpg


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Tobi




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PostPosted: May 23, 2017 13:00    Post subject: Re: Collection of Carles Millan - Cassiterite from Bolivia  

Carles Millan wrote:
Cassiterite, Quartz
Locality: Viloco Mine, Loayza Province, La Paz Department, Bolivia
As usual, a splendid specimen and a great photo - I guess cassiterite is not easy to photograph. But what are the green/blue areas on the matrix, a copper mineral?
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Carles Millan
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PostPosted: May 24, 2017 03:24    Post subject: Re: Collection of Carles Millan - Cassiterite from Bolivia  

Tobi wrote:
As usual, a splendid specimen and a great photo - I guess cassiterite is not easy to photograph. But what are the green/blue areas on the matrix, a copper mineral?

Thank you, Tobi.

Regarding the blue areas, I don't know what they are, but I consider them as negligible. Probably something like Blu-Tack from the previous owner. I'll try to clean them.
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PostPosted: Dec 18, 2017 06:35    Post subject: Collection of Carles Millan - Manganite from Ilfeld  

Manganite

Very bright and lustrous, well formed, jet-black prismatic crystals of manganite. The plate has dozens of sharp columns up to 18 mm tall, striated according to the c-axis with the typical rough flat terminations, densely covering the top of an 110 mm x 54 mm x 39 mm massive manganite matrix. Weight: 347 g. I can't see any damage with my naked eye except in the periphery. An old-time European classic from the type locality that set the standard for the species (and still does). Put on sale in the XIX century by the German dealer Dr. Adam August Krantz (1808-1872), as seen in the label that comes with it. He was then one of the foremost mineral dealers in Europe, established in Bonn from 1850 until his death. Wikipedia: https://en.wikipedia.org/wiki/Adam_August_Krantz

Ilfeld, Nordhausen, Harz, Thuringia/Thüringen, Germany.

Photos are copyrighted by Dan Weinrich.
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4686-manganite1.jpg
 Mineral: Manganite
 Locality:
Ilfeld, Nordhausen, Harz, Thuringia/Thüringen, Germany
 Dimensions: 110 mm x 54 mm x 39 mm. Weight: 347 g
 Description:
 Viewed:  1250 Time(s)

4686-manganite1.jpg



4686-manganite3.jpg
 Mineral: Manganite
 Locality:
Ilfeld, Nordhausen, Harz, Thuringia/Thüringen, Germany
 Dimensions: 110 mm x 54 mm x 39 mm. Weight: 347 g
 Description:
From the opposite side
 Viewed:  1249 Time(s)

4686-manganite3.jpg



4686L-manganite.jpg
 Mineral: _Manganite
 Locality:
Ilfeld, Nordhausen, Harz, Thuringia/Thüringen, Germany
 Dimensions: 110 mm x 54 mm x 39 mm. Weight: 347 g
 Description:
Venerable original label from the German dealer Adam August Krantz (1808-1872)
 Viewed:  1251 Time(s)

4686L-manganite.jpg


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Enrique Llorens




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PostPosted: Dec 18, 2017 10:13    Post subject: Re: Collection of Carles Millan  

Really great acquisition.

Congratulations. Enrique Llorens
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PostPosted: Dec 18, 2017 12:49    Post subject: Re: Collection of Carles Millan  

Finally something new from your collection, Carles :-) And really GREAT news, as it seems: Congratulations to that specimen, you added one of Europe's most desired classics in superb quality to your collection! I have seen many of these famous Ilfeld manganites in German collections, and even many museums don't own a specimen like that. And even with an old Krantz label! Simply fantastic :-)
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Philippe Durand




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PostPosted: Dec 18, 2017 13:59    Post subject: Re: Collection of Carles Millan  

stunning manganite; a dream ...
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Carles Millan
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PostPosted: Dec 19, 2017 03:39    Post subject: Re: Collection of Carles Millan  

Thanks to all for your kind words.

Tobi wrote:
Finally something new from your collection, Carles :-) And really GREAT news, as it seems: Congratulations to that specimen, you added one of Europe's most desired classics in superb quality to your collection! I have seen many of these famous Ilfeld manganites in German collections, and even many museums don't own a specimen like that. And even with an old Krantz label! Simply fantastic :-)

Tobi, you are fortunate for living at about 200 km from Ilfeld (and Sankt Andreasberg, and Neudorf...). Just one-day round trip and you are able to collect something. For free. Some people at Ilfeld found a rich manganite dump under a 400 y/o oak tree several years ago.
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James
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PostPosted: Dec 19, 2017 05:20    Post subject: Re: Collection of Carles Millan  

Tobi

We could always start a series of threads along the lines of "XXXX's most desired classic". If we are talking about Europe, I want a Siderite box!

James

Tobi wrote:
Finally something new from your collection, Carles :-) And really GREAT news, as it seems: Congratulations to that specimen, you added one of Europe's most desired classics in superb quality to your collection! I have seen many of these famous Ilfeld manganites in German collections, and even many museums don't own a specimen like that. And even with an old Krantz label! Simply fantastic :-)
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PostPosted: Jan 28, 2018 12:52    Post subject: Collection of Carles Millan - Tetrahedrite from Peru  

Tetrahedrite, hübnerite, quartz

A crowd of metallic tetrahedrite crystals, the biggest of which is 25 mm on edge, is perched on a large cluster of colorless quartz crystals. The major of these is 86 mm tall, and they are mostly transparent with a somewhat frosted surface making it translucent white. As a little surprise a hübnerite crystal can be spotted just at the geometrical center of the photo, partly overlapping the white main quartz. It is 17 mm long and 7.5 mm wide, and is embedded between quartz and tetrahedrite. When backlit in the right way it shows the typical deep red color. The whole specimen weighs 137 g and measures 92 mm x 61 mm.

Mundo Nuevo mining area, Mundo Nuevo, Huamachuco, Sánchez Carrión Province, La Libertad Department, Peru.

Unless otherwise noted, all photos are copyright by 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


2278M-tetrahedrite.jpg
 Mineral: Tetrahedrite, Hübnerite, Quartz
 Locality:
Mundo Nuevo mining area, Mundo Nuevo, Huamachuco, Sánchez Carrión Province, La Libertad Department, Peru
 Dimensions: 92 mm x 61 mm
 Description:
Photo copyright © Rudolf Watzl
 Viewed:  490 Time(s)

2278M-tetrahedrite.jpg



2278M-tetrahedrite2.jpg
 Mineral: Tetrahedrite, Hübnerite, Quartz
 Locality:
Mundo Nuevo mining area, Mundo Nuevo, Huamachuco, Sánchez Carrión Province, La Libertad Department, Peru
 Dimensions: 92 mm x 61 mm
 Description:
From another position to expose the upper tetrahedrite crystal.

Sorry! Extremely difficult to photograph specimen.
 Viewed:  480 Time(s)

2278M-tetrahedrite2.jpg



Peru.jpg
 Mineral: _Tetrahedrite, Hübnerite, Quartz
 Locality:
Mundo Nuevo mining area, Mundo Nuevo, Huamachuco, Sánchez Carrión Province, La Libertad Department, Peru
 Dimensions: 92 mm x 61 mm
 Description:
Where is Mundo Nuevo?
Full map at http://carlesmillan.cat/maps/Peru.png
(the red marks point to well known mineral localities)
 Viewed:  481 Time(s)

Peru.jpg



2278M-tetrahedrite.jpg
 Mineral: Tetrahedrite, Hübnerite, Quartz
 Locality:
Mundo Nuevo mining area, Mundo Nuevo, Huamachuco, Sánchez Carrión Province, La Libertad Department, Peru
 Dimensions: 92 mm x 61 mm
 Description:
Marked in red color the position where the hübnerite crystal is
 Viewed:  481 Time(s)

2278M-tetrahedrite.jpg


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Enrique Llorens




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PostPosted: Jan 29, 2018 03:00    Post subject: Re: Collection of Carles Millan  

Great one Carles!!

Congratulations. Enrique.
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PostPosted: Jan 29, 2018 12:58    Post subject: Re: Collection of Carles Millan  

Enrique Llorens wrote:
Great one Carles!! Congratulations.
I have nothing to add :-)
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