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English: Quartz (Var.: Amethyst), Sphalerite
Locality: Last Chance Mine (Del Monte Mine; New York Nine), Amethyst Vein, Creede District, Mineral County, Colorado, USA (Locality at mindat.org)
Size: 14.2 x 5.0 x 0.6 cm.
The Amethyst Vein in Creede was an amazing area that measured three miles long and produced some incredibly memorable pieces from this famous Silver mining district. This polished slab is a good example of the well known "sowbelly" variety of Amethyst/Quartz that was synonymous with this mine. It is actually nothing more than a polished section of the actual vein in the mine. The specimen was mined in the 1960s, and shows beautifully banded layers of white Quartz and purple Amethyst along with some dark greenish Sphalerite. One of the most impressive features of this specimen is the fact that it is rather gemmy when backlit. The slab has a blocky shape, as it was obviously cut against other pieces from the same chunk of ore. A fine piece of this now hard to find and classic material. Ex. Brian Kosnar Collection.
Deutsch: Quarz (Var.: Amethyst), Sphalerit
Fundort: Last Chance Mine (Del Monte Mine; New York Nine), Amethyst Vein, Creede District, Mineral County, Colorado, Vereinigte Staaten (Fundort bei mindat.org)
Größe: 14.2 x 5.0 x 0.6 cm.
Date before March 2010(2010-03)
Source http://www.mindat.org/photo-284029.html


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EXIF data:
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Size, Mbytes 0.0475078125
Mime type image/jpeg
Camera manufacturer NIKON
Camera model COOLPIX P90
Orientation of image 1
Image resolution in width direction 72
Image resolution in height direction 72
Unit of X and Y resolution 2
Exposure time 10/400 sec (0.025)
F number f / 8
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ISO speed rating 64
Compressed bits per pixel 4
Exif version 0220
Lens focal length 5.9 mm
Date and time original image was generated 2010:01:20 03:25:13
Date and time image was made digital data 2010:01:20 03:25:13
Meaning of each component 
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Maximum lens aperture 3
Metering mode 5
User comments
Supported Flashpix version 0100
Color space information 1
Exif image width 492
Exif image length 432
Scene type 
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Digital zoom ratio 0
Focal length in 35 mm film 33 mm
Software used Adobe Photoshop 7.0

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