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Mixed Minerals

Sunday, 08 January 2023 06:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including adamite, armstrongite, calcite, ferro-ferri-winchite, gold, and hydroscarbroite and more from places like Mina Ojuela, Mapimi, Durango, Mexico, Khan Bogdo Massif, Gobi Desert, Mongolia, Santa Eulalia, Chihuahua, Mexico, Harstigen mine, Filipstad, Värmland, Sweden, Idarado mine, Telluride, San Miguel Co., Colorado, United States, and Weston Favell, Northamptonshire, England.

Adamite

(cuprian) - #AH60631
Locality
Mina Ojuela, Mapimi, Durango, Mexico 
Formula
Zn2AsO4(OH) 
Availability
Available
Price
$75.00
Size
11.5 x 9 x 5.5 cm - Cabinet 
Tagged
arsenate  

Rich green groups of well-formed crystals of Adamite in limonitic matrix with Calcite.


Adamite

Formula
Zn2AsO4(OH) 
Crystal System
Orthorhombic 
Crystal Habit
Tabular, Druse, Encrustations 
Cleavage
One Good 
Luster
Vitreous - Resinous 
Color
yellow, green, violet, pink, yellowish green 
Streak
white 
Class
Orthorhombic - Dipyramidal 
Fracture
Brittle 
Hardness
3.5 
Collection
Arnold G Hampson Collection
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Armstrongite

#BAC60582
Locality
Khan Bogdo Massif, Gobi Desert, Mongolia 
Formula
CaZrSi6O15·2.5H2
Availability
Available
Price
$125.00
Size
2 x 1 x 1 cm - Thumbnail 

Light pink cleaved crystal grains to 7mm. Excellent and rich specimen.


Armstrongite

Formula
CaZrSi6O15·2.5H2
Crystal System
Monoclinic 
Crystal Habit
Bladed, Spherical, Aggregates 
Cleavage
Perfect, Distinct, None 
Luster
Vitreous (Glassy) 
Color
light brown, reddish brown 
Streak
brownish white 
Class
Monoclinic - Sphenoidal 
Fracture
Brittle 
Hardness
4.5 
Collection
William & Anne Cook Collection

Calcite

with Marcasite - #AH60690
Locality
Santa Eulalia, Chihuahua, Mexico 
Formula
CaCO3 
Availability
Sold
Size
15.5 x 8 x 8 cm - Cabinet 
Tagged
carbonate  

Large cabinet specimen full of 1 to 3cm scalenohedral Calcite crystals with a light coating of Marcasite. Really a nice showy specimen. Very little damage with only one cleaved crystal.


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
Mineralpedia
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Ferro-Ferri-Winchite

#BAC60583
Locality
Harstigen mine, Filipstad, Värmland, Sweden 
Formula
[CaNa][Fe2+4(Fe3+,Al)]Si8O22(OH)2 
Availability
Available
Price
$55.00
Size
3 x 2.1 x 2 cm - Thumbnail 

A 3mm group of crystals with Rhodonite.


Collection
William & Anne Cook Collection

Gold

in Quartz with Chalcopyrite - #AH56210
Locality
Idarado mine, Telluride, San Miguel Co., Colorado, United States 
Formula
Au 
Availability
Sold
Size
5.2 x 4 x 0.6 cm - Sm Cabinet 
Tagged
native element  

A slab of Galena in Quartz with abundant Gold grains to 1mm.


Gold

Formula
Au 
Crystal System
Isometric 
Crystal Habit
Arborescent, Platy, Granular 
Cleavage
None, None, None 
Luster
Metallic 
Color
yellow, pale yellow, orange, yellow white, reddish white 
Streak
yellow 
Class
Isometric - Hexoctahedral 
Fracture
Hackly 
Hardness
2.5-3 
Collection
Arnold G Hampson Collection
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Hydroscarbroite

#BAC60567
Locality
Weston Favell, Northamptonshire, England 
Formula
Al14(CO3)3(OH)36 · nH2
Availability
Available
Price
$40.00
Size
1.9 x 1 x 0.6 cm - Thumbnail 
Tagged
carbonate  

Earthy, dull, dirty white to light brown spongy mass of Hydroscarbroite.


Hydroscarbroite

Formula
Al14(CO3)3(OH)36�n(H2O) 
Crystal System
Triclinic 
Color
white 
Streak
white 
Class
Triclinic 
Hardness
1-2 
Collection
William & Anne Cook Collection

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