IMA mineral species

Monteregianite-(Y)

KNa₂YSi₈O₁₉·5H₂O

Phyllosilicate mineral.

Monteregianite-(Y) specimen
Monteregianite-(Y)-92798.jpg · Wikimedia Commons (see file page for author & license)

Properties

Chemical formulaKNa₂YSi₈O₁₉·5H₂O
ElementsK, Na, Y, Si, O, H
Crystal system—
Mohs hardness—
Density—
Streak—
Color—
IMA symbolMreg-Y
Nickel–Strunz class9.EB.15

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

🌍 Where it's found

Type locality (where it was first described): Poudrette quarry, Canada

  • 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.