Goldschmidtite
Goldschmidtite is an IMA-recognized mineral species in the oxides & hydroxide class, with the chemical formula KNbO₃.
It crystallizes in the cubic crystal system (space group Pm-3m). It is a member of the Perovskite structural group.
Key properties: specific gravity 5.32; Adamantine luster.
IMA symbol Gsc, IMA status: approved, named in 2018.
An inclusion in a websteritic diamond (whose surface had green and brown radiation damage) from a kimberlite pipe.
It is found associated with Cr-rich augite, chromite, Mg-silicate, an unidentified K-Sr-REE-Nb-oxide.
The mineral was named to honor geochemist Victor Moritz Goldschmidt (1888-1947), for his wide-reaching contributions in geology, chemistry, mineralogy, crystallography, and petrology.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet.
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