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- 19:55, 27 June 2026 Cornish semiconductor talk contribs created page Arsenopyrite (Created page with "right|frame|A curve trace of arsenopyrite from Penlee beach Lustre:Metallic, Sub-Metallic Transparency:Opaque Colour:Silver-white to steel-gray, may have a slight yellow appearance Comment:Tarnished material common, some iridescent Streak:Gray-black Hardness:5½ - 6 on Mohs scale Tenacity:Brittle Cleavage:Distinct/Good Distinct on {001}; {010} in traces Fracture:Irregular/Uneven [https://www.mindat.org/min-3314.html Data from mindat] A...")
