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Beryllonite & Greifensteinite

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BCK220493

Beryllonite & Greifensteinite

Description Tabs

Description
Locality: 
Estes Quarry, Baldwin, Cumberland County, Maine, United States of America
Size Range: 
Thumbnail (1-3cm)
Size: 
1.5 × 1.3 × 1.1 cm
Description

You are bidding on a small specimen with a unusual and photogenic cogwheel of beryllonite crystals in matrix with several groups of brown greifensteinite crystals in vugs with minor eosphorite.

Mineral Data
What's on the rock

Beryllonite

Formula: 
NaBePO4
Strunz: 
8.AA.10
Crystal System: 
Monoclinic
Hardness: 
5.5 - 6.0
Streak: 
White
Type Locality: 
Joe McKeen Mountain locality (McKean Farm), Stoneham, Oxford Co., Maine, USA

Greifensteinite

Formula: 
Ca2Fe2+5Be4(PO4)6(OH)4·6H2O
Strunz: 
8.DA.10
Hardness: 
0.0
Type Locality: 
Greifenstein Rocks, Ehrenfriedersdorf, Erzgebirge, Saxony, Germany

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