IMA mineral species

Stevensite

(Ca,Na)xMg₃-x(Si₄O₁₀)(OH)₂

Smectite, questionable phyllosilicate mineral.

YellowPinkBrownWhite & Clear

Stevensite specimen
Stevensite-213179.jpg · Wikimedia Commons (see file page for author & license)

Properties

Chemical formula(Ca,Na)xMg₃-x(Si₄O₁₀)(OH)₂
ElementsCa, Na, Mg, Si, O, H
Crystal system—
Mohs hardness—
Density—
Streak—
Color—
IMA symbolStv
Nickel–Strunz class9.EC.45

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