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Lyonsite Chlorothionite & Langbeinite

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CSL622869

Lyonsite Chlorothionite & Langbeinite

Rare Mineral

Description Tabs

Description
Locality: 
Yadovitaya Fumarole, Second Scoria Cone, Great Fissure, Tolbachik Volcano, Kamchatka Krai, Russian Federation
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.7 × 1.1 × 0.7 cm
Description

This is a very good specimen with three very rare minerals. Lyonsite is a Cu-Fe-vanadate mineral forms tiny reddish needles associating with blue green chlorothionite (K-Cu-sulfate-chloride) on colourless-white, crude langbeinite crystals. 

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

Chlorothionite

Formula: 
K2Cu(SO4)Cl2
Strunz: 
7.BC.25
Hardness: 
2.5
Type Locality: 
Mt Vesuvius, Somma-Vesuvius Complex, Naples Province, Campania, Italy

Langbeinite

Formula: 
K2Mg2(SO4)3
Strunz: 
7.AC.10
Hardness: 
3.5 - 4.0
Type Locality: 
Wilhelmshall, Halberstadt, Saxony-Anhalt, Germany
Loranth Minerals

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