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Aragonite & Adamite On Manganese

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PFK787284

Aragonite & Adamite On Manganese

Classic Locality

Description Tabs

Description
Locality: 
Christiana Mine, Kamariza, Agios Konstantinos, Lavrion District, Attiki Prefecture, Greece
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.9 × 2 × 1.7 cm
Description

This is a bizarre and showy specimen, unique for its combination and looks. A cigar-shaped stalactite of a manganese oxide mineral with almost black core and brown exterior hosts a wonderful, doubly terminated cluster of aragonite at the bottom. The side has a tiny cluster of adamite. The spheroids are either adamite or aragonite, at any case beautiful and strange!

ex Konstantinos Papaspyropoulos collection.

Mineral Data
What's on the rock

Aragonite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.15
Crystal System: 
Hexagonal
Hardness: 
3.5 - 4.0
Type Locality: 
Gallo river, Molina de Aragón, Guadalajara, Castile-La Mancha, Spain

Adamite

Formula: 
Zn2(AsO4)(OH)
Strunz: 
8.BB.30
Crystal System: 
Orthorhombic
Hardness: 
3.5
Streak: 
white
Type Locality: 
Chañarcillo, Copiapó Province, Atacama Region, Chile

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