IMA mineral species

Franciscanite

Mn²⁺₆(V₅+,☐)₂(SiO₄)₂(O,OH)₆

Nesosilicate mineral.

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

Properties

Chemical formulaMn²⁺₆(V₅+,☐)₂(SiO₄)₂(O,OH)₆
ElementsMn, V, Si, O, H
Crystal systemHexagonal
Mohs hardness—
Density—
Streak—
Color—
IMA symbolFcc
Nickel–Strunz class9.AF.75

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