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Eosphorite & Hyalite

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SCH96124

Eosphorite & Hyalite

Description Tabs

Description
Locality: 
Jenipapo District, Itinga, Minas Gerais, Brazil
Size Range: 
Thumbnail (1-3cm)
Size: 
2.8 × 1.4 × 1.5 cm
Description

Very unusual specimen of orange-brown eosphorite crystals covered by transparent hyalite crystals from a recent new find.

Mineral Data
What's on the rock

Eosphorite

Formula: 
(Mn2+,Fe2+)Al(PO4)(OH)2·H2O
Strunz: 
8.DD.20
Crystal System: 
Orthorhombic
Hardness: 
5.0
Streak: 
White
Type Locality: 
Fillow Quarry (Branchville Quarry; Branchville Mica Mine; Smith Mine), Branchville, Redding (Reading), Fairfield Co., Connecticut, USA

Hyalite

Variety Of: 

Opal

Formula: 
SiO2·nH2O
Strunz: 
4.DA.10
Hardness: 
5.5 - 6.5
Formula: 
SiO2·nH2O
Hardness: 
5.5 - 6.5
Streak: 
white
schani

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