IMA mineral species

Tusionite

Mn²⁺Sn₄+[BO₃]₂

Borate mineral.

YellowBrownWhite & Clear

Tusionite specimen
Tusionite.jpg · Wikimedia Commons (see file page for author & license)

Properties

Chemical formulaMn²⁺Sn₄+[BO₃]₂
ElementsMn, Sn, B, O
Crystal systemTrigonal
Mohs hardness—
Density—
Streakwhite
Color—
IMA symbolTsn
Nickel–Strunz class6.AA.15

“—” means no reliable value in Wikidata yet. Check Mindat for full data.

🌍 Where it's found

Type locality (where it was first described): Tusion river valley, Tajikistan