IMA mineral species

Holtite

(Ta₀.₆☐₀.₄)Al₆BSi₃O₁₈

Nesosilicate mineral.

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

Properties

Chemical formula(Ta₀.₆☐₀.₄)Al₆BSi₃O₁₈
ElementsTa, Al, B, Si, O
Crystal system—
Mohs hardness—
Density—
Streak—
Color—
IMA symbolHlt
Nickel–Strunz class9.AJ.10

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