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0 item @ $0.00  

Mixed Minerals

Sunday, 24 July 2022 07:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including calcite, dioptase, fluorite, microlite, and sylvanite and more from places like Mariposa mine, Terlingua dist., Brewster Co., Texas, United States, Tsumeb mine, Tsumeb, Namibia, Melchor Múzquiz, Coahuila, Mexico, Harding mine, Taos Co., New Mexico, United States, and Spotted Horse mine, Fergus Co., Montana, United States.

Calcite

#52538
Locality
Mariposa mine, Terlingua dist., Brewster Co., Texas, United States 
Formula
CaCO3 
Availability
Available
Price
$60.00
Size
5.5 x 4.5 x 2 cm - Sm Cabinet 
Tagged
carbonate  

Orange scalenohedral crystals of sharply terminated Calcite.


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
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Dioptase

#WR58870
Locality
Tsumeb mine, Tsumeb, Namibia 
Formula
CuSiO3·H2
Availability
Available
Price
$45.00
Size
3 x 2.5 x 2 cm - Thumbnail 
Tagged
copper  

Nice coverage of sparkly green Dioptase crystals to 2m.


Dioptase

Formula
CuSiO3·H2
Crystal System
Trigonal 
Crystal Habit
Massive, Cryptocrystalline, Crystalline - Coarse 
Cleavage
Good, None, None 
Luster
Vitreous (Glassy) 
Color
dark blue green, emerald green, turquoise 
Streak
green 
Class
Trigonal - Rhombohedral 
Fracture
Conchoidal 
Hardness
Collection
Willard L. Roberts Collection
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Fluorite

#58868
Locality
Melchor Múzquiz, Coahuila, Mexico 
Formula
CaF2 
Availability
Available
Price
$40.00
Size
4.5 x 4 x 4 cm - Miniature 

Light purple Flourite crystals.


Fluorite

Formula
CaF2 
Crystal System
Isometric 
Crystal Habit
Crystalline - Coarse, Massive - Granular, Disseminated 
Cleavage
Three perfect, octahedral cleavages. 
Luster
Vitreous (Glassy) 
Color
purple, clear, yellow, green, red, blue 
Streak
white 
Geological Setting
Occurs in a wide range of geologic environments including low temperature Missississippi Valley lead-zinc deposits, hydrothermal gold deposits, Alpine cleft metamorphic environments  
Class
Isometric - Hexoctahedral 
Fracture
Uneven 
Hardness
Collection
Willard L. Roberts Collection
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Microlite

in Lepidolite - #AH58855
Locality
Harding mine, Taos Co., New Mexico, United States 
Formula
A2-mD2X6-w Z1-n 
Availability
Available
Price
$45.00
Size
8 x 6 x 5 cm - Sm Cabinet 

Dense, fine granular purple Lepidolite with small 2-3mm Microlite crystals.


Microlite

Formula
(Na,Ca)2Ta2O6(O,OH,F) 
Crystal System
Isometric 
Crystal Habit
Disseminated, Pseudo Octohedral 
Cleavage
Indistinct, Indistinct, Indistinct 
Luster
Vitreous - Resinous 
Color
yellowish brown, reddish brown, greenish brown, green, gray 
Streak
light yellow 
Class
Isometric - Hexoctahedral 
Fracture
Sub Conchoidal 
Hardness
5-5.5 
Collection
Arnold G Hampson Collection
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Sylvanite

with Fluorite & Quartz - #58170
Locality
Spotted Horse mine, Fergus Co., Montana, United States 
Formula
AgAuTe4 
Availability
Available
Price
$125.00
Size
2.5 x 2.5 x 2.5 cm - Thumbnail 
Tagged
tellurium , silver , gold  

Fairly rich Sylvanite specimen with crystals to 4mm.


Sylvanite

Formula
AgAuTe4 
Crystal System
Monoclinic 
Crystal Habit
Prismatic, Skeletal, Platy 
Cleavage
Perfect, None, None 
Luster
Metallic 
Color
yellowish silver white, white 
Streak
steel gray 
Class
Monoclinic - Prismatic 
Fracture
Uneven 
Hardness
1.5-2 
Collection
Arnold G Hampson Collection
Mineralpedia
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