Uraninite

Lát'ọwọ́ Wikipedia, ìwé ìmọ̀ ọ̀fẹ́
Lọ sí: atọ́ka, àwárí
Uraninite
General
Category Mineral
Chemical formula Uranium dioxide or uranium(IV) oxide (UO2)
Identification
Color Black or brownish
Crystal habit Massive, botryoidal, granular. Crystals uncommon.
Crystal system Isometric
Cleavage Indistinct
Fracture Conchoidal to uneven
Mohs scale hardness 5 - 6
Luster Submetallic, greasy
Streak Same as colour, black or brownish
Specific gravity 7.8 - 10
Refractive index Opaque
Pleochroism None
Solubility Soluble in sulfuric, nitric, and hydrofluoric acids.
Major varieties
Pitchblende Massive

Uraninite


Itokasi[àtúnṣe | àtúnṣe àmìọ̀rọ̀]