Home > Laskowski Ⅷ – September 21 > MS1952 Durangite


Durangite is a sodium aluminum arsenate fluoride. George J. Brush, professor of mineralogy at Yale University, named the mineral for the Mexican State of Durango, wherein lies the type locality. A note in Brush (1869) hints at crystallographic similarities between titanite and durangite. An early crystal structure determination by Kokkoros (1938) demonstrated an isostructural relationship with titanite, recently re-affirmed by Downs et al. (2012). Despite its long history, durangite remains a global rarity with only five localities listed in the Handbook of Mineralogy.

Orange-red durangite crystals to 1.6 mm have grown on spherulitic hematite. Good for the locality. From the collection of E.R. Laskowski (1949-2020), a mining engineer who retired to Tucson, Arizona.

Price: $75

Item code: MS1952

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