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Anthophyllite

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CR1034306

Anthophyllite

Classic Locality

Description Tabs

Description
Locality: 
Heřmanov, Křižanov, Žďár nad Sázavou, Vysočina Region, Czech Republic
Class: 
Massive/Crystalline
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 5 × 2 cm
Description

A superior and very well-defined example of the rare and classic nodules of anthophyllite from Hermanov.

The outer layer is composed of silvery-golden "needle"-like crystals of the rare magnesium iron inosilicate hydroxide anthophyllite (an Amphibole species) which gives way to a mossy-green colored layer of a Chlorite Group mineral culminating with a deep bronze-brown colored "core" of phlogopite mica.

 

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

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Start 22 Mar 18:00
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Germany
6
Europe
9
USA, Rest of World
$12

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