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Formula: Pd20Te7
Telluride of palladium
Crystal System: Trigonal
Specific gravity: 11.72 calculated
Hardness: 5
Environments
Localities
There are two co-type localities, the Stillwater mine, Stillwater county, Montana, USA, and the Stillwater Complex,
Montana, USA.
Four grains of keithconnite have been found at the type localities, associated with
kotulskite,
telluropalladinite and
magnetite, but is also found as a free grain in heavy-mineral
concentrates
(CM 17.589-594).
Keithconnite is a rare mineral found with other platinum group
minerals in layered ultrabasic complexes and their placers. Associated minerals include
merenskyite
(HOM).
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