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Formula: Y2Mn4Al(Si2B7BeO24)
Phyllosilicate (sheet silicate), borosilicate, yttrium,
manganese, boron and
beryllium bearing mineral
Crystal System: Orthorhombic
Specific gravity: 4.41 calculated
Hardness: 6¹ to 7
Streak: White
Colour: Yellow-brown
Environments
Badakhshanite-(Y) is a relatively new mineral, approved 2018, and to date (March 2022) found only at the
type locality.
Localities
At the type locality, the Dorozhnyi pegmatite, Murghob, Gorno-Badakhshan, Tajikistan, badakhshanite-(Y) is
found in miarolitic granitic
pegmatite within the Kukurt pegmatite field. It occurs in
medium to coarse grained non-graphic
albite-microcline-quartz
pegmatites in close association with
smoky quartz, scandium-bearing
spessartine, scandium-bearing
tusionite and schorl.
Badakhshanite-(Y) occurs as single columnar crystals ranging from 50 to 400 μm in length, as inclusions in
spessartine and tourmaline,
and rarely as crystals in blebs along boundaries between garnet,
tourmaline and quartz
(CM 58.3.381-394).
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