Elasmochloite
Elasmochloite is an IMA-recognized mineral species in the sulfate class, with the chemical formula Na₃Cu₆BiO₄(SO₄)₅.
It crystallizes in the monoclinic crystal system (space group P2_1/n).
Key properties: specific gravity 3.844; Pale green streak; Strong vitreous luster.
IMA symbol Ela, IMA status: approved, named in 2018.
A sublimate on scoria around an active fumarole.
It is found associated with Tenorite, hematite, langbeinite, aphthitalite, krasheninnikovite, johillerite.
Its name comes from the Greek words ελασμα, with the meaning “lamella”, and χλοη, with the meaning “green shoot” or “green grass”.
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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