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Krausite & Voltaite

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ZSO806109

Krausite & Voltaite

Description Tabs

Description
Locality: 
Mátraszentimre, Heves County, Hungary
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.7 × 3 × 2.5 cm
Description

A really rich specimen. There are several perfect black cubic crystals of voltaite associated with pale lemon yellow, perfect transparent krausite crystals on chalcedony matrix. One-time find. Only a few specimen available and this is one of the best.

Mineral Data
What's on the rock

Krausite

Formula: 
KFe(SO4)2·H2O
Strunz: 
7.CC.05
Crystal System: 
Monoclinic
Hardness: 
2.5
Streak: 
White
Type Locality: 
Sulphur Hole (Sulfur Hole; Sulphur pit), Mule Canyon, Yermo, Calico District (Daggett District), Calico Mts (Calico Hills), San Bernardino Co., California, USA

Voltaite

Formula: 
K2Fe2+5Fe3+3Al(SO4)12·18H2O
Strunz: 
7.CC.25
Hardness: 
3.0 - 3.5
Type Locality: 
Solfatara di Pozzuoli, Pozzuoli, Phlegrean Fields, Naples Province, Phlegrean Volcanic Complex, Campania, Italy

Seller Information

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