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Rare & Systematic Minerals

Friday, 18 June 2021 05:00 PM

Introducing the "Rare & Systematic Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including anatase, and fluorite and more from places like Topcha locality, east slope of Polar Urals, Russia, and Ten Percenter mine, Teller Co., Colorado, United States.

Anatase

on Quartz - #AH55971
Locality
Topcha locality, east slope of Polar Urals, Russia 
Formula
TiO2 
Availability
Available
Price
$40.00
Size
4.5 x 3 x 2.1 cm - Miniature 

Sharp deep blue crystal to 7mm.


Anatase

Formula
TiO2 
Crystal System
Tetragonal 
Crystal Habit
Pyramidal, Tabular 
Cleavage
Perfect, Distinct, None 
Luster
Adamantine - Resinous 
Color
black, reddish brown, yellowish brown, dark blue, gray 
Streak
pale yellowish white 
Class
Tetragonal - Ditetragonal Dipyramidal 
Fracture
Conchoidal 
Hardness
5.5-6 
Collection
Arnold G Hampson Collection
Mineralpedia
View Anatase
On Dakota Matrix
Previously Sold Anatase
On Dakota Matrix
Other Available Anatase
WebMineral
View Anatase
Mindat
View Anatase

Fluorite

#56004
Locality
Ten Percenter mine, Teller Co., Colorado, United States 
Formula
CaF2 
Availability
Available
Price
$25.00
Size
4.5 x 5 x 4 cm - Miniature 

Of course this doesn't even come close to a fine Fluorite - It is just a good and large Fluorite for the locality. It is a faint green, eventhough the photos don't show it.


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
Chris van Laer Collection
Mineralpedia
View Fluorite
On Dakota Matrix
Previously Sold Fluorite
On Dakota Matrix
Other Available Fluorite
WebMineral
View Fluorite
Mindat
View Fluorite

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