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.