Selenojalpaite
Selenojalpaite is an IMA-recognized mineral species in the sulfide class, with the chemical formula Ag₃CuSe₂.
It crystallizes in the tetragonal crystal system (space group I4_1/amd). It is a member of the Jalpaite structural group.
Key properties: Mohs hardness 4–4.5; specific gravity 7.65; Black streak; Metallic luster.
IMA symbol Sjal, IMA status: approved, named in 2004.
Found in a mineralized hydrothermal calcite vein.
It is found associated with Eucairite, altaite, berzelianite, copper, Au-Ag alloy, Se-bearing chalcopyrite, Se-bearing bornite, berzelianite, covellite, umangite, athabascaite.
As the selenium (seleno) analog of jalpaite.
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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