IMA mineral species

Rilandite

Cr₆SiO₁₁·5H₂O (?)

Questionable unclassified silicate.

Rilandite specimen — Rilandite.jpg · Wikimedia Commons (see file page for author & license)

Properties

Chemical formula	Cr₆SiO₁₁·5H₂O (?)
Elements	Cr, Si, O, H
Crystal system	—
Mohs hardness	—
Density	—
Streak	—
Color	—
IMA symbol	Ril
Nickel–Strunz class	9.HB.10

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

🌍 Where it's found

Type locality (where it was first described): Rio Blanco County, 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.

Learn more

Rilandite on Mindat.org
Wikidata item Q3935809 (source of this page's data – you can correct it there)