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Delhayelite & Hisingerite

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SHS189079

Delhayelite & Hisingerite

Description Tabs

Description
Locality: 
Eveslogchorr Mountain, Khibiny Massif, Murmansk Oblast, Russian Federation
Class: 
Single Crystal
Size Range: 
Thumbnail (1-3cm)
Size: 
1.9 × 1.4 × 0.7 cm
Description

Nice delhayelite and hisingerite on matrix

Mineral Data
What's on the rock

Delhayelite

Formula: 
(Na,K)10Ca5Al6Si32O80(Cl2,F2,SO4)3·18H2O
Strunz: 
9.EB.10
Crystal System: 
Orthorhombic
Hardness: 
0.0
Type Locality: 
Mt Shaheru, Mt Nyiragongo, Goma, Kivu, Democratic Republic of Congo (Zaïre)

Hisingerite

Formula: 
Fe3+2(Si2O5)(OH)4·2H2O
Strunz: 
9.ED.10
Crystal System: 
Monoclinic
Hardness: 
2.5 - 3.0
Type Locality: 
Riddarhyttan, Skinnskatteberg, Västmanland, Sweden