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Anthophyllite

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WND550218

Anthophyllite

Description Tabs

Description
Locality: 
Heřmanov, Křižanov, Žďár nad Sázavou, Vysočina Region, Czech Republic
Class: 
Massive/Crystalline
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.8 × 4.8 × 2.8 cm
Description

Fibrous grey anthophyllite aggregates, creating the rim of the so called Heřmanov ball from Heřmanov in Moravia, Czech Republic. The core of the ball consists of biotite-phlogopite mica. A nice, very typical specimen, 

Mineral Data
What's on the rock

Anthophyllite

Formula: 
☐{Mg2}{Mg5}(Si8O22)(OH)2
Strunz: 
9.DE.05
Crystal System: 
Orthorhombic - Dipyramidal
Hardness: 
5.5 - 6.0
Type Locality: 
Kjennerudvann Anthophyllite Prospect, Kjennerudvann, Kongsberg, Buskerud, Norway
Wendel Minerals

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