IMA mineral species

Cuatrocapaite-(K)

K₃(NaMg☐)(As₂O₃)₆Cl₆(H₂O)₁₆

Hydrous arsenite mineral.

Properties

Chemical formula	K₃(NaMg☐)(As₂O₃)₆Cl₆(H₂O)₁₆
Elements	K, Na, Mg, As, O, Cl, H
Crystal system	Trigonal
Mohs hardness	—
Density	—
Streak	white
Color	colorlessness
IMA symbol	Ctc-K
Nickel–Strunz class	3.DC

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

🌍 Where it's found

Type locality (where it was first described): Torrecillas mine, Chile

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

Cuatrocapaite-(K) on Mindat.org
Wikidata item Q58832992 (source of this page's data – you can correct it there)