IMA mineral species

Serandite

NaMn²⁺₂Si₃O₈(OH)

Inosilicate mineral.

Serandite specimen
Serandite-d05-45a.jpg · Wikimedia Commons (see file page for author & license)

Properties

🔷 Triclinic✏️ streak white
Chemical formulaNaMn²⁺₂Si₃O₈(OH)
ElementsNa, Mn, Si, O, H
Crystal systemTriclinic
Mohs hardness—
Density—
Streakwhite
Color—
IMA symbolSrd
Nickel–Strunz class9.DG.05

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

🌍 Where it's found

Type locality (where it was first described): Rouma Island, Guinea

  • 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.