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Woodruffite

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ALB182693

Woodruffite

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Description
Locality: 
Ojuela Mine, Mapimi, Durango, Mexico
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 4 × 1.2 cm
Description

Very nice metalli needles of this mineral. Normally it forms botroidal masses, but in this case it has spendid groups of metallic needles.

Mineral Data
What's on the rock

Woodruffite

Formula: 
Zn(Mn4+,Mn3+)5O10·3½H2O
Strunz: 
4.FL.25
Hardness: 
4.5
Streak: 
Brown
Type Locality: 
Passaic pit (Marshall Mine; Passaic Mine), Sterling Hill, Ogdensburg, Franklin Mining District, Sussex Co., New Jersey, USA

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