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Romanèchite Psm Selenite

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PFK549195

Romanèchite Psm Selenite

Classic Locality

Description Tabs

Description
Locality: 
Kamariza Mines, Agios Konstantinos, Lavrion District, Attiki Prefecture, Greece
Class: 
Single Crystal
Size Range: 
Cabinet (10-18 cm)
Size: 
14.1 × 1.9 × 1.7 cm
Description

An elongated crystal of selenite has been covered with a manganese oxide mineral probably romanechite(could also be psilomelane or pyrolusite) and then dissolved thus becoming an encrustation pseudomorph!

Mineral Data
What's on the rock

Romanèchite

Formula: 
(Ba,H2O)2Mn5O10
Strunz: 
4.DK.10
Hardness: 
5.0 - 6.0
Type Locality: 
Manganese deposit, Romanèche-Thorens, La Chapelle-de-Guinchay, Saône-et-Loire, Burgundy, France

Selenite

Variety Of: 

Gypsum

Formula: 
CaSO4·2H2O
Strunz: 
7.CD.40
Hardness: 
2.0
Hardness: 
0.0

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