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Mixed Minerals

Sunday, 26 June 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 descloizite, gypsum, halite, lepidolite, rosasite, and wulfenite and more from places like Berg Aukus, Grootfontein dist., Namibia, Eisleben, Mansfeld Basin, Saxony-Anhalt, Germany, Salton Sea, Imperial Co., California, United States, Ingersoll mine, Pennington Co., South Dakota, United States, Mina Ojuela, Mapimi, Durango, Mexico.

Descloizite

#RS58738
Locality
Berg Aukus, Grootfontein dist., Namibia 
Formula
PbZnVO4(OH) 
Availability
Available
Price
$65.00
Size
5.5 x 3.5 x 1.5 cm - Sm Cabinet 
Tagged
vanadium  

It looks black, but in transmitted light are actually a deep yellow. The crystals are approximately 3mm in 8-9mm groups. These are unique "curled" 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
RC Stamberg Collection

Gypsum

var. selenite - #RS58719
Locality
Eisleben, Mansfeld Basin, Saxony-Anhalt, Germany 
Formula
CaSO4·2H2
Availability
Available
Price
$45.00
Size
9 x 5.5 x 3 cm - Sm Cabinet 

Colorless crystals of selenite to 4cm.


Gypsum

Formula
CaSO4·2H2
Crystal System
Monoclinic 
Crystal Habit
Tabular, Crystalline - Coarse, Massive - Fibrous 
Cleavage
Perfect, Distinct, Distinct 
Luster
Pearly 
Color
white, colorless, yellowish white, greenish white, brown 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Fibrous 
Hardness
Collection
RC Stamberg Collection
On Dakota Matrix
Previously Sold Gypsum
On Dakota Matrix
Other Available Gypsum
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Halite

#RS58716
Locality
Salton Sea, Imperial Co., California, United States 
Formula
NaCl 
Availability
Available
Price
$45.00
Size
7 x 9 x 2.5 cm - Sm Cabinet 

Colorless Halite crystals to 7mm with a little iron-staining. Look closely at the 5h photo. You can see that the crystals nucleated on wood sticks. 


Halite

Formula
NaCl 
Crystal System
Isometric 
Crystal Habit
Euhedral Crystals, Granular, Crystalline - Coarse 
Cleavage
Perfect, Perfect, Perfect 
Luster
Vitreous (Glassy) 
Color
white, clear, light blue, dark blue, pink 
Streak
white 
Class
Isometric - Hexoctahedral 
Fracture
Brittle 
Hardness
2.5 
Collection
RC Stamberg Collection
Mineralpedia
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On Dakota Matrix
Previously Sold Halite
On Dakota Matrix
Other Available Halite
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Mindat
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Lepidolite

#RS58713
Locality
Ingersoll mine, Pennington Co., South Dakota, United States 
Formula
K(Li,Al)3(Si,Al)4O10(F,OH)2 
Availability
Available
Price
$25.00
Size
6 x 4.5 x 3 cm - Sm Cabinet 

Granular purple Lepidolite from one of the most famous mines in the Black Hills. Lepidolite is an ore of lithium, one the hottest sought after ores in the world these days.


Lepidolite

Formula
K(Li,Al)3(Si,Al)4O10(F,OH)2 
Crystal System
Monoclinic 
Crystal Habit
Platy, Foliated, Massive 
Cleavage
Perfect, None, None 
Luster
Vitreous - Pearly 
Color
colorless, gray white, lilac, yellowish, white 
Streak
white 
Class
Monoclinic 
Fracture
Uneven 
Hardness
2.5-3 
Collection
RC Stamberg Collection

Rosasite

#RS58746
Locality
Mina Ojuela, Mapimi, Durango, Mexico 
Formula
CuZnCO3(OH)2 
Availability
Available
Price
$35.00
Size
5.5 x 3.5 x 1 cm - Sm Cabinet 
Tagged
carbonate , copper  

Beautiful "fuzzy" clusters of blue Rosasite.


Rosasite

Formula
CuZnCO3(OH)2 
Crystal System
Monoclinic 
Crystal Habit
Spherical, Mammillary, Encrustations 
Cleavage
Perfect, Perfect, None 
Luster
Vitreous - Silky 
Color
blue green, light blue, sky blue 
Streak
light blue 
Class
Monoclinic - Prismatic 
Fracture
Splintery 
Hardness
Collection
RC Stamberg Collection
Mineralpedia
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On Dakota Matrix
Previously Sold Rosasite
On Dakota Matrix
Other Available Rosasite
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Mindat
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Wulfenite

#AH58750
Locality
Mina Ojuela, Mapimi, Durango, Mexico 
Formula
PbMoO4 
Availability
Available
Price
$45.00
Size
8 x 4.5 x 3 cm - Sm Cabinet 

Tabular dark orange crystals to 7mm.


Wulfenite

Formula
PbMoO4 
Crystal System
Tetragonal 
Crystal Habit
Tabular, Pyramidal 
Cleavage
Imperfect, None, None 
Luster
Resinous - Greasy 
Color
orange yellow, waxy yellow, yellowish gray, olive green, brown 
Streak
yellowish white 
Class
Tetragonal - Dipyramidal 
Fracture
Brittle - Conchoidal 
Hardness
Collection
Arnold G Hampson Collection
Mineralpedia
View Wulfenite
On Dakota Matrix
Previously Sold Wulfenite
On Dakota Matrix
Other Available Wulfenite
WebMineral
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Mindat
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