Shakhdaraite-(Y)

shakhdaraite-(Y)

microlite

fersmite

bertrandite

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Formula: ScYNb2O8
Multiple oxide, samarskite group, scandium-bearing mineral
Specific gravity: 5.602 calculated
Hardness: 5
Streak: Brown
Colour: Black to dark brown, internal reflections are red-brown.
Environments

Pegmatites

Shakhdaraite-(Y) is a recently discovered mineral, to date (March 2022) reported only from its type locality.

Localities

At the type locality, the Leskhozovskiy granitic pegmatite, Shakhdara Range, Shughnon, Gorno-Badakhshan, Tajikistan, shakhdaraite-(Y) occurs mainly as grains from 10 to 150 μm in size in a the pegmatite complex in association with quartz, albite, pyrochlore-microlite, fersmite and an unnamed scandium-niobium oxide; only one large, single, well-shaped crystal 200 μm long was found in a small cavity with quartz, albite, bertrandite, pyrochlore and jarosite (CM 60.2.369-382).

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