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Recently Released New Additions

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 fluorite, and microlite and more from places like Melchor Múzquiz, Coahuila, Mexico, and Harding mine, Taos Co., New Mexico, United States.

Fluorite - 58868
Fluorite - 58868

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
4 
Collection
Willard L. Roberts Collection
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Microlite - AH58855
Microlite - AH58855

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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