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Erythrite With Gypsum

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QRI842446

Erythrite With Gypsum

Classic Locality

Description Tabs

Description
Locality: 
Vallone Stope, Cape Calamita Mine, Capoliveri, Elba, Livorno Province, Tuscany, Italy
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.9 × 2.8 × 2.6 cm
Largest Crystal: 
0.10cm
Weight: 
18.00gr
Description

Over two dozens of purple erythrite botryoids and tufts populate most of this limonite-gypsum specimen, provoding an excellent color contrast.

Erythrite from Elba is pretty rare and this is a very rich specimen!

Boxed with Label
Mineral Data
What's on the rock

Erythrite

Formula: 
Co3(AsO4)2·8H2O
Strunz: 
8.CE.40
Hardness: 
1.5 - 2.5
Type Locality: 
Daniel Mine (St. Daniel Mine), Neustädtel, Schneeberg District, Erzgebirge, Saxony, Germany

Gypsum

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

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