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Coquandite Metastibnite & Stibiconite

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CLB157684

Coquandite Metastibnite & Stibiconite

ex collection Gerda Wimmer
Pseudomorph

Description Tabs

Description
Locality: 
Pereta Mine, Scansano, Grosseto Province, Tuscany, Italy
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.7 × 3.8 × 3.7 cm
Description

Exciting specimen with a very rare paragenesis: - bushels of acicular colorless coquandite crystals (visual ID - if not coquandite it must be unusually pale klebelsbergite) - red mestastibnite - pale yellow crusts of stibiconite pseudomorph after stibnite on - stibnite - and model-shaped, pale yellow native sulphur crystals in a vug.

Mineral Data
What's on the rock

Coquandite

Formula: 
Sb6+xO8+x(SO4)(OH)x(H2O)1- x (x = 0.3)
Strunz: 
7.DE.35
Crystal System: 
Triclinic
Hardness: 
3.0 - 4.0
Type Locality: 
Lucky Knock Mine (Lawrence Mine), Whitestone Coulee, Tonasket, Okanogan Co., Washington, USA

Metastibnite

Formula: 
Sb2S3
Strunz: 
2.DB.05
Hardness: 
2.0 - 3.0
Streak: 
Red
Type Locality: 
Steamboat Hot Springs, Steamboat Springs District, Washoe Co., Nevada, USA

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