Tags: Chemical Substance, Mineral.
Vladimirite is a rare calcium arsenate mineral with a formula of Ca5(HAsO4)2(AsO4)2·5H2O. It is named after the Vladimirovskoye deposit in Russia where it was discovered in the 1950s. Vladimirite is monoclinic-prismatic which means crystallographically it contains three axes of unequal length and the angles between two of the axes are 90 degrees and one is less than 90 degrees. It belongs to the space group P21/c. The mineral also has an orthorhombic polytype.
