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Mixed Minerals

Friday, 14 January 2022 06:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including cerussite, gold and more from places like Kellogg, Coeur d'Alene dist., Shoshone Co., Idaho, United States, Gunnison Co., Colorado, United States, and Golden Crest mine, Summit Co., Colorado, United States.

Cerussite

#57428
Locality
Kellogg, Coeur d'Alene dist., Shoshone Co., Idaho, United States 
Formula
PbCO3 
Availability
Sold
Size
9 x 4.5 x 5 cm - Sm Cabinet 
Tagged
carbonate  

White to brown Cerussite crystals to 1cm in large vug. There is a 5mm brownish cyclic twinned group near the center. Galena matrix.


Cerussite

Formula
PbCO3 
Crystal System
Orthorhombic 
Crystal Habit
Reticulate, Massive - Granular, Crystalline - Coarse 
Cleavage
Distinct, Distinct, None 
Luster
Adamantine 
Color
colorless, white, gray, blue, green 
Streak
white 
Class
Orthorhombic - Dipyramidal 
Fracture
Brittle - Conchoidal 
Hardness
3-3.5 
Mineralpedia
View Cerussite
On Dakota Matrix
Previously Sold Cerussite
On Dakota Matrix
Other Available Cerussite
WebMineral
View Cerussite
Mindat
View Cerussite

Gold

in Quartz - #57434
Locality
Gunnison Co., Colorado, United States 
Formula
Au 
Availability
Sold
Size
5 x 3.5 x 2.5 cm - Miniature 
Tagged
native element  

Tiny 1mm and less brilliant gold crystal grains scattered throughout Quartz matrix.


Gold

Formula
Au 
Crystal System
Isometric 
Crystal Habit
Arborescent, Platy, Granular 
Cleavage
None, None, None 
Luster
Metallic 
Color
yellow, pale yellow, orange, yellow white, reddish white 
Streak
yellow 
Class
Isometric - Hexoctahedral 
Fracture
Hackly 
Hardness
2.5-3 
Mineralpedia
View Goldmanite
On Dakota Matrix
Previously Sold Gold
On Dakota Matrix
Other Available Gold
WebMineral
View Gold
Mindat
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Gold

with Tetradymite - #57437
Locality
Golden Crest mine, Summit Co., Colorado, United States 
Formula
Au 
Availability
Sold
Size
1.4 x 1 x 5 cm - Miniature 
Tagged
native element  

A small Quartz piece with leaf Gold to 1mm associated with shiny black, foliated and iridescent Tetradymite. Tetradymite is an uncommon bismuth-tellurium sulfide. Seems like not much is known of this mine. The USGS has a little information (click it). Mindat list it here (click it). Tetradymite is indeed found at the Golden Crest with Gold but interestingly so is Beryl, a typical pegmatite mineral. 


Gold

Formula
Au 
Crystal System
Isometric 
Crystal Habit
Arborescent, Platy, Granular 
Cleavage
None, None, None 
Luster
Metallic 
Color
yellow, pale yellow, orange, yellow white, reddish white 
Streak
yellow 
Class
Isometric - Hexoctahedral 
Fracture
Hackly 
Hardness
2.5-3 
Mineralpedia
View Goldmanite
On Dakota Matrix
Previously Sold Gold
On Dakota Matrix
Other Available Gold
WebMineral
View Gold
Mindat
View Gold

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