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Mixed Minerals

Friday, 10 September 2021 06:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including calcite, and descloizite and more from places like Camp Verde, Yavapai Co., Arizona, United States, and Berg Aukus, Grootfontein dist., Namibia.

Calcite

ps after Glauberite - #AH56462
Locality
Camp Verde, Yavapai Co., Arizona, United States 
Formula
CaCO3 
Availability
Available
Price
$175.00
Size
10 x 6 x 6 cm - Cabinet 
Tagged
carbonate  

Calcite pseudomorph after Glauberite with sharp, excellent, crystals with some of the best preserved forms I have seen of these specimens. Usually these are broken or scuffed up, but not this specimen. It is nearly perfect with no damage at all. It was purchased by Hampson in 1967.


Calcite

Formula
CaCO3 
Crystal System
Trigonal 
Crystal Habit
Crystalline - Coarse, Stalactitic, Massive 
Cleavage
Perfect, Perfect, Perfect 
Luster
Vitreous (Glassy) 
Color
colorless, white, pink, yellow, brown 
Streak
white 
Class
Trigonal - Hexagonal Scalenohedral 
Fracture
Brittle - Conchoidal 
Hardness
Collection
Arnold G Hampson Collection
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Descloizite

#AH56463
Locality
Berg Aukus, Grootfontein dist., Namibia 
Formula
PbZnVO4(OH) 
Availability
Available
Price
$95.00
Size
7 x 6 x 7.5 cm - Sm Cabinet 
Tagged
vanadium  

It is hard to see in the photos, but this specimen is hollow through the center. It is much like a crown full of black, very lustrous, 1-3mm Descloizite crystals. 


Descloizite

Formula
PbZnVO4(OH) 
Crystal System
Orthorhombic 
Crystal Habit
Plumose, Tabular, Encrustations 
Cleavage
None, None, None 
Luster
Greasy (Oily) 
Color
dark brownish black, dark reddish brown, orange red, reddish brown, black 
Streak
light brownish green 
Class
Orthorhombic - Dipyramidal 
Fracture
Brittle 
Hardness
3.5 
Collection
Arnold G Hampson Collection

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