Stichtite is a mineral, a carbonate of chromium and magnesium; formula Mg6Cr2CO3(OH)16·4H2O. 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 (the hexagonal 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 the manager of the mine.

It is observed in combination with green serpentine at Stichtite Hill near the Dundas Extended Mine, Dundaseast 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.

Stichtite has also been reported from:

  • Barberton District, Transvaal;
  • Darwendale, Zimbabwe;
  • Bou Azzer, Morocco;
  • Cunningsburgh, the Shetland Islands of Scotland;
  • Langban, Varmland, Sweden;
  • Altai Mountains, Russia;
  • Langmuir Township, Ontario and the Megantic, Quebec;
  • Bahia, Brazil;
  • Keonjhar district, Orissa, India.

It is sometimes used as a gemstone.

Source: Wikipedia

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