Stone, minerals and semiprecious of the world stone
Phosphate: Liroconite -->rus
Diagnostic cart.
Cu2 Al (As, P)O4 (OH)4 * 4 H2O
Crystal structure monoclinic
Hardness on the Mohs scale 2-2,5
Specific unit weight mass 2,9-3
Cleavage bad
Fracture, break fragile frail brittle
Colors blue
Glance (glitter, glare) glassy, fat
Presented thin lens-like crystals, often reminding octahedrons in a due form. Colouring is sky-blue, brilliance of glassy, mineral is transparent. Lirokonite, lentil ore (mineral from the group of water arsenic-sour compounds).
Diagnostic indication.
We will dissolve in acids. In the process of heating, before to be melted, changes a color, becoming chlorine.
Origin provenance genesis.
Be found in the area of oxidization of copper-ore deposits together with a cuprite, malachite, olivenite, arsenic-copper ore, chalcophilliite and swamp ore. Arsenate.
Deposit minefield mine field occurrence subsoil.
Met in Redrut and Sent-dey on a peninsula Kornuoll, in Kherrengrund in Czech Republic (EU), in Saxony and Tyuringiya (EU).
Liroconite. Kornuoll, England, Great Britain. A photo: © A.A. Evseev.
Cumeb, Namibia. A photo: © A.A. Evseev.
