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Stephanite : Ag5SbS4, Acanthite : Ag2S, Chlorargyrite : AgCl, Quartz : SiO2

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Summary of all keyboard shortcuts

1Fit image to screen
2Fill screen with image
3Switch to 3D display of stereo pair
4Switch left/right images in 3D mode
<, >Make background darker/lighter
H or ?Show/hide this help page
PPlay/Pause Video or Animation
[, ]Backwards/forwards one frame (Animation only)
up arrowShow information box
down arrowHide information box
left arrowPrevious image/media page
right arrowNext image/media page
spaceHide/dim titles and buttons


Copyright © W.C. van Laer, 2009
 
 
minID: 0J5-DN0

Stephanite : Ag5SbS4, Acanthite : Ag2S, Chlorargyrite : AgCl, Quartz : SiO2

Copyright © W.C. van Laer, 2009  - This image is copyrighted. Unauthorized reproduction prohibited.
Dimensions: 3.7 cm x 2.9 cm x 2.9 cm

Matrix specimen with stephanite, acanthite, and one small hemispherical mass of pale yellow chlorargyrite on martix of drusy quartz. This was collected off the dumps of the old Champion mine circa 1980. In the mid seventies, this mine was re-opened by the Anaconda Company and worked for its silver, but a mining engineering graduate of Montana Tech ran the operation and threw all the ore on to the dumps, and sent the gangue to the mill. The operation went bust, but for a few years you could pick up ore with these minerals (the chlorargyrite from here is previously unreported) including fine pyrargyrite crystals lying on the dumps in relative abundance. Later the dumps were removed and processed, so little good material remains. Ore sampled from here ran 290 ounces silver and 1.00 ounce gold per ton! Size of specimen: 3.7 x 2.9 x 2.9 cm.; self-collected.

This photo has been shown 594 times

Photo added: 1st Dec 2009

Dimensions: 827x768px (0.64 megapixels)

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