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Rare Minerals

Sunday, 09 January 2022 06:00 PM

Introducing the "Rare Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including brewsterite-sr, tlapallite, and wadeite and more from places like Middleshop, Strontian, Argyllshire, Scotland, Lucky Cuss mine, Tombstone, Cochise Co., Arizona, United States, and Kirovskii mine, Kukisvumchorr Mt., Khibiny Massif, Kola Peninsula, Russia.

Brewsterite-Sr

#BW57401
Locality
Middleshop, Strontian, Argyllshire, Scotland 
Formula
Sr(Al2Si6)O16·5H2
Availability
Available
Price
$195.00
Size
8 x 4 x 2 cm - Sm Cabinet 
Special Info
Type Locality 

Exceptional specimen of Brewsterite with colorless, stubby, prismatic crystals to 2.5mm. Great coverage on front and back, loaded with crystals.


Brewsterite-Sr

Formula
Sr(Al2Si6)O16·5H2
Crystal System
Monoclinic 
Crystal Habit
Prismatic 
Cleavage
Perfect, None, None 
Luster
Vitreous (Glassy) 
Color
white, yellowish white, gray. 
Streak
white 
Class
Monoclinic - Prismatic 
Hardness
Collection
Bill Wilson Collection
Special Info
Type Locality

Tlapallite

#BW57294
Locality
Lucky Cuss mine, Tombstone, Cochise Co., Arizona, United States 
Formula
H6Ca2Cu3SO4(Te4+O3)4(Te6+O6
Availability
Available
Price
$85.00
Size
5 x 3 x 2 cm - Miniature 
Tagged
copper , tellurium  

A rich specimen for this pastel green, very rare copper tellurate. It is only found at 5 or 6 localities.


Tlapallite

Formula
H6Ca2Cu3SO4(Te4+O3)4(Te6+O6
Crystal System
Monoclinic 
Crystal Habit
Thin, Encrustations 
Cleavage
None, None, None 
Luster
Vitreous (Glassy) 
Color
green, cyprus green 
Class
Monoclinic 
Hardness
Collection
Bill Wilson Collection

Wadeite

with Eudialyte - #BW57378
Locality
Kirovskii mine, Kukisvumchorr Mt., Khibiny Massif, Kola Peninsula, Russia 
Formula
K2ZrSi3O9 
Availability
Available
Price
$45.00
Size
4 x 2.5 x 2.5 cm - Miniature 

The Wadeite form a light lilac colored halo around the red Eudialyte.


Wadeite

Formula
K2ZrSi3O9 
Crystal System
Hexagonal 
Crystal Habit
Prismatic, Hexagonal 
Cleavage
None, None, None 
Luster
Adamantine 
Color
colorless, violet, light lilac, pink 
Streak
white 
Class
Hexagonal - Dipyramidal 
Fracture
Brittle - Conchoidal 
Hardness
5.5-6 
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