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Brandholzite

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MNR714216

Brandholzite

Rare Mineral

Description Tabs

Description
Locality: 
Kolársky Hill, Pezinok, Pezinok County, Bratislava Region, Slovakia (Slovak Republic)
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.4 × 5 × 1.3 cm
Largest Crystal: 
0.50cm
Description

Very rich sample of rare magnesium and antimony hydroxide - brandholzite forming colorless flattened hexagonal shape crystals of 5 mm size on the grey matrix. Crystals are present on both sides of sample.

Ref.: Stevko M., Tucek P., Vitálos J. (2012): Pezinok: Die weltbesten Kermesite und Brandholzite aus der Slowakei. Lapis, 37, 10, 40-41, 56-57; 90

 

Mineral Data
What's on the rock

Brandholzite

Formula: 
Mg[Sb(OH)6]2·6H2O
Strunz: 
4.FH.05
Crystal System: 
Trigonal
Hardness: 
2.0 - 3.0
Type Locality: 
Brandholz - Goldkronach District, Fichtelgebirge, Franconia, Bavaria, Germany