Maletoyvayamite
Maletoyvayamite is an IMA-recognized mineral species in the sulfide class, with the chemical formula Au₃Se₄Te₆.
It crystallizes in the triclinic crystal system (space group P-1). It is a member of the Maletoyvayamite structural group.
Key properties: specific gravity 7.98; Gray [synthetic] streak; Metallic luster.
IMA symbol Mty, IMA status: approved, named in 2019.
Found in heavy-mineral concentrate from a hydrothermal, high-sulfidation epithermal deposit.
It is found associated with Native gold, [(Au-Ag)-(Sb, As, Te, S)-O], calaverite, unnamed phases (AuSe, Au2TeSe, and Au oxide), native tellurium, tennantite-tetrahedrite, goldfieldite.
The name is taken from the type locality, the Maletoyvayam deposit in the Kamchatka peninsula, Russia.
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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