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Mixed Minerals

Friday, 17 March 2017 07:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including amarantite, aurichalcite, beryl, cacoxenite, callaghanite, and cuprite and more from places like Chuquicamata mine, El Loa Prov., Antofagasta, Chile, Mina Ojuela, Mapimi, Durango, Mexico, Little Three mine, San Diego Co., California, United States, Union Carbide mine, Wilson Springs, Garland Co., Arkansas, United States, Basic Refractories mine, Gabbs, Nye Co., Nevada, United States, and Black Pine mine, Philipsburg, Granite Co., Montana, United States.

Amarantite

#DS46645
Locality
Chuquicamata mine, El Loa Prov., Antofagasta, Chile 
Formula
Fe3+2O(SO4)2(H2O)4·3H2
Availability
Available
Price
$35.00
Size
8 x 5 x 4 cm - Sm Cabinet 

Yellow granular, crystalline mass.


Amarantite

Formula
Fe3+2O(SO4)2(H2O)4·3H2
Crystal System
Triclinic 
Cleavage
Perfect, Perfect, None 
Luster
Vitreous (Glassy) 
Color
brown red, orange red, pink, red 
Streak
yellow 
Class
Triclinic - Pinacoidal 
Hardness
2.5 
Collection
Shultz Collection

Aurichalcite

with Calcite - #46610
Locality
Mina Ojuela, Mapimi, Durango, Mexico 
Formula
Zn5(CO3)2(OH)6 
Availability
Sold
Size
5 x 4 x 4 cm - Miniature 

Bluish green thin bladed crystals of Aurichalcite to 7mm with Calcite. Getting harder and harder to obtain these.


Aurichalcite

Formula
Zn5(CO3)2(OH)6 
Crystal System
Monoclinic 
Crystal Habit
Druse, Encrustations, Acicular 
Cleavage
Perfect, None, None 
Luster
Pearly 
Color
pale green, sky blue, greenish blue 
Streak
light blue 
Class
Monoclinic - Prismatic 
Fracture
Uneven 
Hardness

Beryl

var. morganite with Quartz - #46622
Locality
Little Three mine, San Diego Co., California, United States 
Formula
Be3Al2Si6O18 
Availability
Sold
Size
6.5 x 5.5 x 4 cm - Sm Cabinet 
Tagged
beryllium , pegmatite mineral  

Light smoky Quartz, which is frosted and not very lustrous, with a 2.3cm light pink, gemmy morganite Beryl tucked between the crystals. 


Beryl

Formula
Be3Al2Si6O18 
Crystal System
Hexagonal 
Crystal Habit
Crystalline - Coarse, Prismatic, Columnar 
Cleavage
Imperfect, None, None 
Luster
Vitreous - Resinous 
Color
green, blue, yellow, colorless, pink 
Streak
white 
Class
Hexagonal - Dihexagonal Dipyramidal 
Fracture
Brittle - Conchoidal 
Hardness
7.5-8 
Collection
Chris van Laer Collection
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Cacoxenite

#DO46633
Locality
Union Carbide mine, Wilson Springs, Garland Co., Arkansas, United States 
Formula
(Fe3+)24AlO6(PO4)17(OH)12·75H2
Availability
Available
Price
$250.00
Size
6.5 x 4 x 4 cm - Sm Cabinet 
Tagged
phosphate  

Beautiful radiating balls of Cacoxenite to 1.5mm. Awesome specimen, but for the scope.They don't make these anymore......


Cacoxenite

Formula
(Fe3+)24AlO6(PO4)17(OH)12·75H2
Crystal System
Hexagonal 
Crystal Habit
Radial, Acicular, Stellate 
Cleavage
None, None, None 
Luster
Silky 
Color
brownish yellow, green, yellow, golden yellow, red yellow 
Streak
yellow 
Class
Hexagonal - Dihexagonal Dipyramidal 
Fracture
Uneven 
Hardness
3-3.5 
Collection
Don Owens Collection

Callaghanite

#46611
Locality
Basic Refractories mine, Gabbs, Nye Co., Nevada, United States 
Formula
Cu2Mg2CO3(OH)6·2H2
Availability
Available
Price
$55.00
Size
5 x 4 x 1 cm - Miniature 
Tagged
carbonate , copper  
Special Info
Type Locality 

Unique blue, similar to a cobalt blue, Callaghanite as fine crystal coatings and single micros crystals about 0.5mm. Rich.


Callaghanite

Formula
Cu2Mg2CO3(OH)6·2H2
Crystal System
Monoclinic 
Cleavage
Perfect, Perfect, None 
Luster
Vitreous (Glassy) 
Color
azure, violet blue 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Uneven 
Hardness
3-3.5 
Special Info
Type Locality

Cuprite

with Pyromorphite on Quartz - #46626
Locality
Black Pine mine, Philipsburg, Granite Co., Montana, United States 
Formula
Cu1+2
Availability
Sold
Size
5.5 x 5 x 3 cm - Sm Cabinet 
Tagged
copper  

An interesting specimen with a lot going on. There is a large 2.5cm Tetrahedrite crystal coated with bright ren Cuprite. There is also brown acicular groups of Pyromorphite on the needle Quartz. And finally there are two Japan law twinned Quartz crystals, one of which is shown. 


Cuprite

Formula
Cu1+2
Crystal System
Isometric 
Crystal Habit
Massive - Granular, Capillary 
Cleavage
Imperfect, None, None 
Luster
Adamantine 
Color
brown red, purple red, red, black 
Streak
brownish red 
Class
Isometric - Hexoctahedral 
Fracture
Brittle - Conchoidal 
Hardness
3.5-4 
Collection
Chris van Laer Collection
Mineralpedia
View Cuprite
On Dakota Matrix
Previously Sold Cuprite
On Dakota Matrix
Other Available Cuprite
WebMineral
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Mindat
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