Nikelin

Nikelin, kolchedani surkhi n i k e l, mineral, arsenidi nikel NiAs.

Dar tarkibash 43,9% Ni, 56,1 % As va aksar vaqt omekhtahoi SO, Fe, Sb va gayra dorad. Dar sistemai geksagonali kristall mebandad, kristallhoyash kamyoft. Odatan massahoi donadori yaklukht va agregathoi gurdamonand hosil menamoyad. Ravgash surkhi past; jiloyash metalli. Sakhtiash 5; zichiash 7600—7800 kg/m³; murt. Dar konhoi pagii gidrotermali yakjoya bo arsenidhoi nikel, kobalt va vismutu nuqrai kholis vomekhurad. Dar zonai oksidshavi ba osoni farsuda shuda, az on minerali annabergit — Ni[AsO₄]₂ • 8N₂O paydo meshavad. Konhoi Nikel dar SSSR (viloyati Kemerovo, kishvari Krasnodar, RASS Tuva), RDG, ShMA, Kanada malumand. Nikel madani muhimi nikel meboshad.