IMA mineral species

Howieite

Na(Fe,Mn)₁₀(Fe,Al)₂Si₁₂O₃₁(OH)₁₃

Single chain inosilicate mineral.

Howieite specimen
Howieite-540427.jpg · Wikimedia Commons (see file page for author & license)

Properties

Chemical formulaNa(Fe,Mn)₁₀(Fe,Al)₂Si₁₂O₃₁(OH)₁₃
ElementsNa, Fe, Mn, Al, Si, O, H
Crystal system—
Mohs hardness—
Density—
Streak—
Color—
IMA symbolHw
Nickel–Strunz class9.DH.65

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

🌍 Where it's found

Type locality (where it was first described): Laytonville, United States

  • 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.