Réf : BE387

Minéral cristallisé de pyrolusite polianite du Maroc

Pyrolusite Polianite - Morocco - crystal minerals 4.4 cm / 154g / BE387 - Vignette | 1001 minéraux

Pyrolusite Polianite - Morocco - crystal minerals 4.4 cm / 154g / BE387

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Pyrolusite belongs to the oxide group. It contains manganese. It is a manganese oxide. Its chemical formula is MnO2.
It generally occurs in a massive form or as a coating of radiating acicular crystals, giving gray metallic reflections.
PYROLUSITE polianite is a variety of Pyrolusite that can have small black acicular crystals.
Pyrolusite's hardness is greater than 6/10 on the Mohs scale (10 for diamond) and its density varies between 4.5 and 5 (1 for water). The line on porcelain is black.
The name Pyrolusite comes from two Greek words pur and lusis which mean fire and decomposition because Pyrolusite dissolves in fire.

Unique piece - Contractual photos

Origin: crystal minerals from Morocco

Dimensions: 4.4 x 4.2 x 4 cm

Weight: 154 g