IMA mineral species

Kornerupine

Mg₃Al₆(Si,Al,B)₅O₂₁(OH)

Sorosilicate mineral.

GreenBrownBlackGrayWhite & Clear

Kornerupine specimen
Kornerupine-162065.jpg · Wikimedia Commons (see file page for author & license)

Properties

Chemical formulaMg₃Al₆(Si,Al,B)₅O₂₁(OH)
ElementsMg, Al, Si, B, O, H
Crystal systemOrthorhombic
Mohs hardness—
Density—
Streakwhite
Color—
IMA symbolKrn
Nickel–Strunz class9.BJ.50

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