IMA mineral species

Ranciéite

(Ca,Mn²⁺)₀.₂(Mn⁴⁺,Mn³⁺)O₂·0.6H₂O

Hydroxide mineral.

Ranciéite specimen
Rancieite-320245.jpg · Wikimedia Commons (see file page for author & license)

Properties

Chemical formula(Ca,Mn²⁺)₀.₂(Mn⁴⁺,Mn³⁺)O₂·0.6H₂O
ElementsCa, Mn, O, H
Crystal systemTrigonal
Mohs hardness—
Density—
Streak—
Color—
IMA symbolRnc
Nickel–Strunz class4.FL.40

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

🌍 Where it's found

Type locality (where it was first described): Le Rancié Mine, France

  • 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.