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Formula: Ti2(Fe3+Nb)O8
Oxide, wolframite group,
columbite supergroup,
titanium- and niobium-
bearing mineral
Crystal System: Orthorhombic
Specific gravity: 4.891 calculated
Hardness: 6
Streak: Black
Colour: Black
Environments
Sedimentary environments
Metamorphic environments
Dmitryvarlamovite is a new mineral, approved in 2023 and to date (May 2024) reported only from the type locality.
Localities
At the type locality, borehole #10855, Verkhne-Shugorskoe bauxite deposit, Timan Range, Komi Republic, Russia,
dmitryvarlamovite was discovered in weathered alkaline metasomatic assemblages formed after late
Riphaean (1,600 to 600 million years ago) sedimentary carbonate rocks of the Verkhne-Shchugorskoe deposit. The associated
minerals are columbite-(Fe),
pyrochlore group minerals,
monazite-(Ce), xenotime-(Y),
baryte, pyrite,
drugmanite and plumbogummite.
Dmitryvarlamovite occurs as isolated anhedral equant grains up to 0.5 mm across
(MM 88.2.147-154).
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