Minerals identify

Know how to recognize them

Stichtite

Carbonate mineral

Stichtite is a mineral, a carbonate of chromium 6Cr. Its colour ranges from pink through lilac to a rich purple colour. It is formed as an alteration product of chromite containing serpentine. It occurs in association with barbertonite polymorph of Mg6Cr2CO3(OH)16·4H2O), chromite and antigorite

Discovered in 1910 on the west coast of Tasmania , Australia, it was first recognised by A.S. Wesley a former chief chemist with the Mount Lyell Mining and Railway Company, it was named after Robert Carl Sticht

It is observed in combination with green serpentine at Stichtite Hill near the Dundas Extended Mine, Dundas - east of Zeehan , as well as on the southern shore of Macquarie Harbour. It is exhibited in the West Coast Pioneers Museum in Zeehan. The only commercial mine for stichtite serpentine is located on Stichtite Hill[citation needed. Stichtite has also been reported from the Barberton District; Darwendale, Zimbabwe , Morocco, the Shetland Islands, Varmland, Russia and the Megantic, Quebec; and the Keonjhar district

It is sometimes used as a gemstone. * Stichtite on serpentine, New Amianthus Mine, Transvaal South Africa

Identification

Mohs scale ( mineral hardness )

1.5

The streak

White

Density ( specific gravity )

1.516
1.542

Crystal ( diaphaneity )

Trigonal