Axinite Crystals Specimen Russia Transbaikalia


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This is the cluster of brownish axinite crystals. Dimensions: 1.3 x 1.3 x 0.7″ (3.3 x 3.2 x 1.7cm). Weight – 0.6oz (18 grams). Origin: Russia, Transbaikalia.

Some information about axinite:

Axinite is a brown to violet-brown, or reddish-brown bladed group of minerals composed of calcium aluminium boro-silicate, (Ca,Fe,Mn)3Al2BO3Si4O12OH. Axinite is pyroelectric and piezoelectric.

The axinite group includes:
Axinite-(Fe) or ferroaxinite, Ca2Fe2+Al2BOSi4O15(OH) iron rich, clove-brown, brown, plum-blue, pearl-gray.
Axinite-(Mg) or magnesioaxinite, Ca2MgAl2BOSi4O15(OH) magnesium rich, pale blue to pale violet; light brown to light pink.
Axinite-(Mn) or manganaxinite, Ca2Mn2+Al2BOSi4O15(OH) manganese rich, honey-yellow, clove-brown, brown to blue.
Tinzenite, (CaFe2+Mn2+)3Al2BOSi4O15(OH) iron – manganese intermediate, yellow, brownish yellow-green.

Additional information

Weight 18 g