IMA mineral species

Kurnakovite

Mg[B₃O₃(OH)₅](H₂O)₄·H₂O

Nesoborate mineral.

White & Clear

Kurnakovite specimen
Kurnakovite-mrz200a.jpg · Wikimedia Commons (see file page for author & license)

Properties

🔷 Triclinic✏️ streak white
Chemical formulaMg[B₃O₃(OH)₅](H₂O)₄·H₂O
ElementsMg, B, O, H
Crystal systemTriclinic
Mohs hardness—
Density—
Streakwhite
Colorwhite
IMA symbolKko
Nickel–Strunz class6.CA.20

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

🌍 Where it's found

Type locality (where it was first described): Inder Lake, Kazakhstan