Henryite
Henryite is an IMA-recognized mineral species in the sulfide class, with the chemical formula (Cu,Ag)₃₊ₓTe₂ (x~0.4).
It crystallizes in the cubic crystal system (space group Fd3c).
Key properties: specific gravity 7.86.
IMA symbol Hry, IMA status: approved, named in 1982.
Of hydrothermal origin, with other Cu–Ag tellurides.
It is found associated with Hessite, petzite, sylvanite, altaite, rickardite, pyrite.
In honor of Professor Norman Fordyce McKerron Henry (1909–1983), mineralogist and ore microscopist, University of Cambridge, Cambridge, England.
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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