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Coquandite Metastibnite & Native Sulphur On Stibnite

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CLB543523

Coquandite Metastibnite & Native Sulphur On Stibnite

Type Locality

Description Tabs

Description
Locality: 
Pereta Mine, Scansano, Grosseto Province, Tuscany, Italy
Class: 
Combination
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.5 × 4.9 × 4.5 cm
Description

Nice cluster of sibnite crystals, almost every single one sprinkled with greenish-yellow suphur crystals. Some white, acicular coquandite crystal sheaves stting between the sulphur and red metastibnite. Klebelsbergite possibly also present.

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

Sulphur

Formula: 
S8
Strunz: 
1.CC.05
Crystal System: 
Orthorhombic
Hardness: 
1.5 - 2.5

Stibnite

Formula: 
Sb2S3
Strunz: 
2.DB.05
Hardness: 
2.0
Streak: 
Lead grey

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