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Lyonsite & Pseudolyonsite

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GMN134199

Lyonsite & Pseudolyonsite

Type Locality

Description Tabs

Description
Locality: 
Yadovitaya Fumarole, Second Scoria Cone, Great Fissure, Tolbachik Volcano, Kamchatka Krai, Russian Federation
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 1 × 0.7 cm
Description

Nice new find from Russia. The lyonsite forms a lot of brownish, black needles, and sprays of needles in cavities. The pseudolyonsite forms black columnar crystals .
Very rich specimen.

Mineral Data
What's on the rock

Lyonsite

Formula: 
Cu3Fe4(VO4)6
Strunz: 
8.AB.40
Crystal System: 
Orthorhombic
Hardness: 
0.0
Type Locality: 
Izalco Volcano, Sonsonate Department, El Salvador

Pseudolyonsite

Formula: 
Cu3(VO4)2
Strunz: 
8.AB.35
Hardness: 
0.0
Type Locality: 
Tolbachik volcano, Kamchatka Oblast', Far-Eastern Region, Russia...

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