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Arrojadite-(KFe)

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SYA681788

Arrojadite-(KFe)

Type Locality

Description Tabs

Description
Locality: 
Nickel Plate Mine, Keystone, Pennington County, South Dakota, United States of America
Class: 
Massive/Crystalline
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 4 × 2.5 cm
Description

Very rich coverage of massive dark olive-green vitreous arrojadite-(KFe) in matrix.

Mineral Data
What's on the rock

Arrojadite-(KFe)

Formula: 
{KNa}{Fe2+◻}{Ca}{Na2◻}{Fe2+13}{Al}(PO4)11(HPO4)(OH)2
Strunz: 
8.BF.05
Crystal System: 
Monoclinic
Hardness: 
5.0
Type Locality: 
Nickel Plate Mine, Keystone, Keystone District, Pennington Co., South Dakota, USA

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