Daomanite
Daomanite is an IMA-recognized mineral species in the sulfosalt class, with the chemical formula CuPtAsS₂.
It crystallizes in the orthorhombic crystal system (space group Aa).
Key properties: specific gravity 7.57; Metallic luster.
IMA symbol Dao, IMA status: approved, named in 1974.
A replacement of bornite in contact metasomatic platinum-bearing Co–Cu sulfide mineralization in peridotite-pyroxenite at the contact with anorthosite or granite-gneiss.
It is found associated with Bornite, chalcopyrite, carrolite, pyrite, tetrahedrite, galena, molybdenite; minor sperrylite, cooperite, moncheite, cobaltian malanite, yixunite, damiaoite.
The name comes from the last syllables of its two Chinese localities, SanDAO and TieMA villages.
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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