Minerals
Plavnoite
plavnoite
K0.8Mn0.6[(UO2)2O2(SO4)]·3.5H2O
Plavnoite Mineral Specimen For Sale — via www.dakotamatrix.com · Source
Overview
Plavnoite is a rare complex uranium sulfate mineral with the formula K0.8Mn0.6[(UO2)2O2(SO4)]•3.5H2O. Typically for the secondary uranium mineral, plavnoite contains uranyl groups. It was discovered in the Plavno mine in Jáchymov, Czech Republic. The Jáchymov site is known as a type locality for many rare and unique minerals.