IMA mineral species

Oxy-schorl

Na(Fe²⁺₂Al)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃O

Tourmaline mineral.

Properties

⛏ Mohs hardness7
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Harder than quartz: scratches glass and steel.

Chemical formulaNa(Fe²⁺₂Al)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃O
ElementsNa, Fe, Al, Si, O, B, H
Crystal systemTrigonal
Mohs hardness7
Density—
Streak—
Color—
IMA symbolOsrl

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

🌍 Where it's found

Type locality (where it was first described): Kutná Hora District, Czech Republic

  • Type locality
  • Notable source / deposit
  • Country of origin

Marker positions are approximate (region or locality level). Type localities from Wikidata; notable sources curated by Crystopedia.