!DOCTYPE html> badakhshanite-(Y)

Badakhshanite-(Y)

badakhshanite-(Y)

tusionite

spessartine

tourmaline

Images

Formula: Y2Mn4Al(Si2B7BeO24)
Phyllosilicate (sheet silicate), borosilicate, yttrium, manganese, boron and beryllium bearing mineral
Specific gravity: 4.41 calculated
Hardness: 6¹ to 7
Streak: White
Colour: Yellow-brown
Environments

Pegmatites

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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