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Mixed Minerals

Friday, 06 March 2020 06:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including scheelite, and sphalerite and more from places like Carrock mine, Caldbeck Fells, Cumbria, England, and Littfeld, Siegerland, North Rhine-Westphalia, Germany.

Scheelite

with Wolframite - #52450
Locality
Carrock mine, Caldbeck Fells, Cumbria, England 
Formula
CaWO4 
Availability
Available
Price
$55.00
Size
7.5 x 7 x 6 cm - Sm Cabinet 
Special Info
Fluorescent 

There's not much Scheelite in this specimen, but you can see a creamy large grain to 6mm. It is associated with Wolfromite which form large blades over 3cm in the Quartz matrix.


Scheelite

Formula
CaWO4 
Crystal System
Tetragonal 
Crystal Habit
Massive - Granular, Disseminated, Columnar 
Cleavage
Distinct, None, None 
Luster
Vitreous (Glassy) 
Color
colorless, white, pale yellow, brownish yellow, reddish yellow 
Streak
white 
Class
Tetragonal - Dipyramidal 
Fracture
Uneven 
Hardness
4-5 
Special Info
Fluorescent
Mineralpedia
View Scheelite
On Dakota Matrix
Previously Sold Scheelite
On Dakota Matrix
Other Available Scheelite
WebMineral
View Scheelite
Mindat
View Scheelite

Sphalerite

in Galena - #52478
Locality
Littfeld, Siegerland, North Rhine-Westphalia, Germany 
Formula
ZnS 
Availability
Available
Price
$125.00
Size
10 x 7 x 5 cm - Cabinet 
Tagged
sulfide  

Deep red very lustrous Sphalerite crystals to 5mm in a large pocket of Galena. It is an old specimen with a handwritten inked label from Dr. F. Krantz.


Sphalerite

Formula
ZnS 
Crystal System
Isometric 
Crystal Habit
Euhedral Crystals, Granular, Colloform 
Cleavage
Perfect, Perfect, Perfect 
Luster
Resinous - Greasy 
Color
brown, yellow, red, green, black 
Streak
brownish white 
Class
Isometric - Hextetrahedral 
Fracture
Uneven 
Hardness
3.5-4 

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