Staurolite Garnet Crystals Specimen Russia Siberia

$32.00

1 in stock

Description

STAUROLITE CRYSTALS

This is the cluster of staurolite crystals with garnet (almandine). Dimensions: 3.1 x 2.0 x 1.1″ (8 x 5 x 2.9cm). Weight – 6oz (169 grams). Origin: Russia, Siberia.

Some information about staurolite:

Staurolite is a reddish brown to black, mostly opaque, nesosilicate mineral with a white streak. It crystallizes in the monoclinic crystal system, has a Mohs hardness of 7 to 7.5. Magnesium, zinc and manganese substitute in the iron site and trivalent iron can substitute for aluminium.

Staurolite often occurs twinned in a characteristic cross-shape, called cruciform penetration twinning.

The name is derived from the Greek, stauros for cross and lithos for stone in reference to the common twinning.

Additional information

Weight 169 g