IMA mineral species

Megacyclite

Na₈KSi₉O₁₈(OH)₉ * 19H₂O

Cyclosilicate mineral.

Properties

Chemical formulaNa₈KSi₉O₁₈(OH)₉ * 19H₂O
ElementsNa, K, Si, O, H
Crystal systemMonoclinic
Mohs hardness—
Density—
Streak—
Color—
IMA symbolMgc
Nickel–Strunz class9.CP.10

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

🌍 Where it's found

Type locality (where it was first described): Mount Rasvumchorr, Russia

  • 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.