Images
Formula: (Th,U,Ca)Ti2(O,OH)6
Oxide, forms a series with brannerite and with
orthobrannerite,
thorium- uranium- and
titanium- bearing mineral
Crystal System: Monoclinic
Specific gravity: 5.82 measured, 6.08 calculated
Hardness: 4½ to 5½
Streak: Light brown
Colour: Black, dark brown
RADIOACTIVE
Environments
Localities
At the type locality,the Severnyi area, Zardalek alkaline massif, Sokh Valley, Batken Region, Kyrgyzstan,
thorutite occurs as short black prismatic crystals up to 2 cm in length and 0.5 to 1.0 cm in diameter. It is
found in a syenite massif in veins of
microcline and sericitised
nepheline. Associated minerals are
thorite, zircon,
calcite, and a little baryte and
galena
(AM 43.1007).
Thorutite from the Severnyi Area - Image
Back to Minerals