Stone, minerals and semiprecious of the world stone
Amphiboles (silicates): Anthophyllite -->rus

   Diagnostic cart.

   (Mg, Fe)7 (OH)2 (Si4O11)2
   Crystal structure rhombic
   Hardness on the Mohs scale 5-6
   Specific unit weight mass 3,1-3,2
   Cleavage shows up easily
   Fracture, break tender
   Colors white, brown, grey
   Colors in powder triturate grey
   Glance (glitter, glare) glassy

   Hardly ever does not meet as distinct crystals; more frequent presented radiant and fibred aggregates, and also lamellar tabular dense the masses. Colors dirty-white, grey, brown-yellow, gold or brown.

   Diagnostic indication.

   Does not dissolve in acids, hardly melt fuse in flame of candle.

   Origin provenance genesis.

   In nature little widespread, be found in crystalline slates (gneiss, amphibolites, chloritic slates, peridotite serpentinite and other) and in some contact deposit-metamorphic rocks.

   Deposit minefield mine field occurrence subsoil.

   This mineral is known in Kongsberge (Norway) and some places in Finland, Greenland and USA. In Italy anthophyllite a-plenty be found among the metamorphized including of granites of San-fedelino (Novate-meccola, province of Sondrio). Marked also in mica slates in Val'-passiriya and, in interleave, interstratify with a serpentine, in Monte-karane (an island Elba).