Category Cyclosilicate Strunz classification 9.CM.05 Crystal system Hexagonal | Formula(repeating unit) KNa2B3Si12O30 Dana classification 63.02.01a.08 | |
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Crystal class Dihexagonal dipyramidal (6/mmm)H-M symbol: (6/m 2/m 2/m) | ||
6 75 ct poudretteite crystal
Poudretteite is an extremely rare mineral and gemstone that was first discovered as minute crystals in Mont St. Hilaire, Quebec, Canada, during the 1960s. The mineral was named for the Poudrette family because they operated a quarry in the Mont St. Hilaire area where poudretteite was originally found.
References
Poudretteite Wikipedia(Text) CC BY-SA