IMA mineral species

Defernite

Ca₆(CO₃)₂-x(SiO₄)x(OH)₇(Cl,OH)₁-₂x (x<₀.₅)

Carbonate mineral.

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

Properties

Chemical formulaCa₆(CO₃)₂-x(SiO₄)x(OH)₇(Cl,OH)₁-₂x (x<₀.₅)
ElementsCa, C, O, Si, H, Cl
Crystal systemOrthorhombic
Mohs hardness—
Density—
Streak—
Color—
IMA symbolDef
Nickel–Strunz class5.BA.25

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