Stone, minerals and semiprecious of the world stone
Oxide and hydrooxide: Senarmontite -->rus

   Diagnostic cart.

   Sb2 O3
   Crystal structure cube
   Hardness on the Mohs scale
   Specific unit weight mass 5,3
   Cleavage noperfect absolute
   Fracture, break padman
   Colors from colourless to grey
   Colors in powder triturate white
   Glance (glitter, glare) resin

   As well as oxide arsenic, oxide antimony, stibium exists in two forms. First structural modification - Senarmontite - analogical on a structure an arsenolite. It is presented the beautiful enough large (to 3 sm) crystals of perfect octahedral form. Colors them greyish-white and grey. Second structural modification - valentinite -have rhombic crystals, whitish-grey and rather yellow colouring. Most often be found as dense, earthy and lamellar tabular-fibrous the masses.

   Origin provenance genesis.

   This mineral appears at oxidization of antimonite and other minerals of antimony, stibium. A white or grey mineral consisting of antimony trioxide in cubic crystalline form

   Deposit minefield mine field occurrence subsoil.

   Senarmontite be found foremost in Algeria (mine of Khamimat, near Konstantina), where he is an oxidate antimonite and associated with other second minerals of antimony, stibium; a deposit is located among rhumss. In Europe this mineral be found in many places, including such as Nedcoris in Sardinia, Pereta in Toskane and Arnsberg in Vestfalii. In Mexico in Arecibo (near Chikhua-Hua) found out the numerous copies of valentinite in an association with a native antimony and кермезитом.

Senarmontite. Khammimat, Algeria. Crystals to 1,5 sm. A photo: © A.A. Evseev.