Bafertisite

bafertisite

sorosilicate

hejtmanite

Bayan Obo

Formula: Ba₂Fe²⁺₄Ti₂(Si₂O₇)₂O₂F₂
Sorosilicate, bafertisite group, forms a series with hejtmanite, titanium-bearing mineral
Specific gravity: 3.96 to 4.27
Hardness: 5
Streak: White
Colour: Red, yellowish-red, light brown
Common impurities: Al,Nb,Mg,Ca,K,Na,F,Cl
Environments:

Plutonic igneous environments

Bafertisite occurs in alkaline igneous rocks such as alkali granite and alkali syenite, or in rocks associated with them (Dana, Webmin).

At the type locality, the Bayan Obo deposit, Baotou League, Inner Mongolia, China, bafertisite occurs in hydrothermal veins associated with aegirine, fluorite, baryte and bastnäsite (Dana, AM 45.754, HOM).

At the Burpala massif, Russia, bafertisite occurs in a dike of microcline granite - aplite (Dana, HOM).

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