Tags: Chemical Substance, Mineral.
Haiweeite is a mineral of uranium and has the chemical formula: Ca[(UO2)2Si5O12(OH)2]·3(H2O). It is a secondary mineral of uranium a product of oxidation. It has a greenish yellow colour. It has a Mohs hardness of about 3.5 and is fluorescent under UV light.It was named after the Haiwee Reservoir Inyo County California USA where it was first found.