From a garnetite in a tin-bearing skarn, formed under conditions of relatively low temperature and low (XCO2).
IMA Status:
Approved IMA 1981
Locality:
On the west bank of the Beht River, near El Hamman, central Morocco. Link to MinDat.org Location Data.
Name Origin:
For Dr. Donald McLain Burt (1943- ), Professor of Mineralogy, Arizona State University, Tempe, Arizona, USA, authority on mineral equilibria and greisen deposits, who had predicted the natural occurrence of the compound
Chemical Formula: 