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Sulfosalt

Shimenite

Tl₅Sb₂₁₋ᵧAsᵧS₃₄ (9 ≤ y ≤ 10)
Crystal systemTriclinic
ClassSulfosalt
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Shimenite specimen

Black crystals of the extremely rare thallium mineral shimenite (IMA 2021-069) from the type locality in Shimen (Shimen County, Changde, Hunan Province, China), associated to dark red crystals of the very rare thallium sulphosalt mineral christite. Matrix is orpiment and minoritary realgar. — Photo: David Hospital · CC BY-SA 4.0

Shimenite

Shimenite is an IMA-recognized mineral species in the sulfosalt class, with the chemical formula Tl₅Sb₂₁₋ᵧAsᵧS₃₄ (9 ≤ y ≤ 10).

It crystallizes in the triclinic crystal system (space group P-1). It is a member of the Chabournéite structural group.

IMA symbol Shmn, IMA status: approved, named in 2021.

Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet. Browse more S minerals or help write this entry.