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Mixed Rare Minerals

Friday, 19 July 2019 06:00 PM

Introducing the "Mixed Rare Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including azurite, baksanite, cassiterite, clinohumite, cosalite, and eclarite and more from places like Metcalf mine, Greenlee Co., Arizona, United States, Tyrnyauz Mo-W deposit, Baksan Valley, Kabardino-Balkarian, N. Caucasus, Russia, Great Wheal Fortune, Breage, Cornwall, England, Commercial quarry, Crestmore, Riverside Co., California, United States, Bolivar mine, Cerro Bonete, Sud Lipez prov., Potosí, Bolivia, and Bärenbad mine, Hollersbach, Hohe Tauern, Salzburg, Austria.

Azurite

with Malachite - #48794
Locality
Metcalf mine, Greenlee Co., Arizona, United States 
Formula
Cu3(CO3)2(OH)2 
Availability
Sold
Size
14 x 8 x 7 cm - Cabinet 
Tagged
carbonate , copper  

Deep blue prismatic crystals of Azurite and balls of Malachite. Stunning specimen and a load of fun to check out. 


Azurite

Formula
Cu3(CO3)2(OH)2 
Crystal System
Monoclinic 
Crystal Habit
Tabular, Prismatic, Stalactitic 
Cleavage
Perfect, Fair, None 
Luster
Vitreous (Glassy) 
Color
azure blue, blue, light blue, dark blue 
Streak
light blue 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Conchoidal 
Hardness
3.5-4 
Collection
Robert J. Waidler Collection
Mineralpedia
View Azurite
On Dakota Matrix
Previously Sold Azurite
On Dakota Matrix
Other Available Azurite
WebMineral
View Azurite
Mindat
View Azurite

Baksanite

#50388
Locality
Tyrnyauz Mo-W deposit, Baksan Valley, Kabardino-Balkarian, N. Caucasus, Russia 
Formula
Bi6Te2S3 
Availability
Available
Price
$125.00
Size
3 x 2 x 1 cm - Thumbnail 
Tagged
sulfide , tellurium  
Special Info
Type Locality 

A four locality mineral. Small 1mm metallic grain. Ex. Anatoly Kasatkin.


Baksanite

Formula
Bi6Te2S3 
Crystal System
Trigonal 
Luster
Metallic 
Color
steel gray 
Class
Trigonal - Hexagonal Scalenohedral 
Hardness
1.5-2 
Special Info
Type Locality

Cassiterite

#51033
Locality
Great Wheal Fortune, Breage, Cornwall, England 
Formula
SnO2 
Availability
Sold
Size
7 x 5 x 3 cm - Sm Cabinet 
Tagged
tin  

Sharp, lustrous, deep brown Cassiterite crystals to 2mm in Quartz vein. Don't take these Cassiterites from Cornwall for granted. Worldwide, there are not that many great localities for good tin minerals like Cornwall.


Cassiterite

Formula
SnO2 
Crystal System
Tetragonal 
Crystal Habit
Prismatic, Massive, Botryoidal 
Cleavage
Perfect, Indistinct, None 
Luster
Adamantine 
Color
brown, brownish black, colorless, green, gray 
Streak
brownish white 
Class
Tetragonal - Ditetragonal Dipyramidal 
Fracture
Irregular 
Hardness
6-7 

Clinohumite

#51049
Locality
Commercial quarry, Crestmore, Riverside Co., California, United States 
Formula
Mg9(SiO4)4F2 
Availability
Sold
Size
7 x 4 x 2 cm - Sm Cabinet 

Orange crystal grains of Clinohumite in marble matrix. Some of good crystal forms.


Clinohumite

Formula
Mg9(SiO4)4F2 
Crystal System
Monoclinic 
Cleavage
Poor, None, None 
Luster
Vitreous (Glassy) 
Color
brown, yellow, white, orange, reddish brown 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Conchoidal 
Hardness

Cosalite

with Chalcopyrite & Calcite - #51040
Locality
Bolivar mine, Cerro Bonete, Sud Lipez prov., Potosí, Bolivia 
Formula
Pb2Bi2S5 
Availability
Sold
Size
8 x 5 x 4 cm - Sm Cabinet 
Tagged
sulfide  

You would be hard pressed to find another Cosalite of this calibur. The pocket is situated at the center of the face and is 2cm and filled with long acicular crystals of Cosalite to 8mm. There is yet more along the backside. It is associated with a matrix of Calcite and Chalcopyrite.


Cosalite

Formula
Pb2Bi2S5 
Crystal System
Orthorhombic 
Crystal Habit
Radial, Massive - Fibrous 
Cleavage
Good, None, None 
Luster
Metallic 
Color
gray, steel gray, silver white 
Streak
black 
Class
Orthorhombic - Dipyramidal 
Fracture
Uneven 
Hardness
2.5-3 
Mineralpedia
View Cosalite
On Dakota Matrix
Previously Sold Cosalite
On Dakota Matrix
Other Available Cosalite
WebMineral
View Cosalite
Mindat
View Cosalite

Eclarite

#50447
Locality
Bärenbad mine, Hollersbach, Hohe Tauern, Salzburg, Austria 
Formula
CuPb9Bi12S28 
Availability
Sold
Size
2.5 x 1.5 x 2 cm - Thumbnail 
Tagged
sulfide , copper  
Special Info
Type Locality 

Rich specimen with silvery metallic grains throughout face.


Eclarite

Formula
CuPb9Bi12S28 
Crystal System
Orthorhombic 
Crystal Habit
Fan Shaped, Aggregates, Acicular 
Cleavage
Good, Poor, None 
Luster
Metallic 
Color
white gray, tin white 
Streak
lead gray 
Class
Orthorhombic - Dipyramidal 
Hardness
3-3.5 
Special Info
Type Locality
On Dakota Matrix
Previously Sold Eclarite
On Dakota Matrix
Other Available Eclarite
WebMineral
View Eclarite
Mindat
View Eclarite

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