John Sobolewski (JSS)·CC BY 3.0·Wikimedia

Ranciéite

(Ca,Mn²⁺)₀.₂(Mn⁴⁺,Mn³⁺)O₂·0.6H₂O

Trigonale heart IMA grandfathered

Etimologia

Nome derivato da Le Rancié Mine.

Chakra secondari