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Pachnolite Weberite Cryolite & Prosopite

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PPM1072291

Description Tabs

Description
Locality: 
Eureka Tunnel, St Peters Dome, Cheyenne District, El Paso County, Colorado, United States of America
Class: 
Mixed Specimens
Size Range: 
Miniature (4.5-7 cm)
Size: 
3.2 × 6.8 × 2.6 cm
Weight: 
64.00gr
Description

A nice solid specimen of various rare aluminofluoride minerals from a classic and seldom-seen locality for these rare species: Eureka Tunnel, St Peters Dome, Cheyenne District, El Paso County, Colorado USA. A very good example of this rare material for the locality. 

Mineral Data
What's on the rock

Pachnolite

Formula: 
NaCa[AlF6]·H2O
Strunz: 
3.CB.40
Hardness: 
3.0
Streak: 
White
Type Locality: 
Ivigtut Cryolite deposit, Ivittuut (Ivigtut), Arsuk Fjord, Sermersooq, Greenland

Weberite

Formula: 
Na2Mg[AlF6]F
Strunz: 
3.CB.25
Hardness: 
3.5
Streak: 
White
Type Locality: 
Ivigtut Cryolite deposit, Ivittuut (Ivigtut), Arsuk Fjord, Sermersooq, Greenland

Cryolite

Formula: 
Na3[AlF6]
Strunz: 
3.CB.15
Crystal System: 
Monoclinic
Hardness: 
2.5
Streak: 
White
Type Locality: 
Ivigtut Cryolite deposit, Ivittuut (Ivigtut), Arsuk Fjord, Sermersooq, Greenland

Prosopite

Formula: 
CaAl2(F,OH)8
Strunz: 
3.CD.10
Crystal System: 
Monoclinic
Hardness: 
4.5
Type Locality: 
Tin mine, Altenberg, Erzgebirge, Saxony, Germany

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Shipping Information

Postage Area Price
<2 Pounds (<907 grams) Priority Mail USA (Estimate) ~$10
$10
<2 Pounds (<907 grams) Standard International (Estimate) ~$25+
$35

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