Thorutite

thorutite

thorite

zircon

nepheline

Images

Formula: (Th,U,Ca)Ti2(O,OH)6
Multiple oxide, forms a series with brannerite and with orthobrannerite, thorium- and titanium- bearing mineral.
Specific gravity: 5.82 measured, 6.08 calculated
Hardness: 4½ to 5½
Streak: Light brown
Colour: Black, dark brown
RADIOACTIVE
Environments

Plutonic igneous 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).

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