Epicoxite is a rare mineral with the chemical formula Na2(Ca,Mn)(SO4)2·4H2O. The word "epicoxite" is pronounced as ɛpɪkɒksaɪt. In this mineral name, "epi-" means "on top" or "over," while "coxite" refers to the mineral, Coxite. Epicoxite is a hydrated sodium, calcium, manganese sulfate mineral that usually occurs in oxidized manganese ore deposits. Its spelling is derived from the Greek words "epi" meaning 'on, over" and "coxos" meaning 'lame or crippled,' referring to its association with Coxite.
Epicoxite is a rare and specialized term that refers to a mineral belonging to the broader category of uranium oxide minerals. It is a radioactive mineral that occurs in very small quantities and is primarily found in granitic pegmatites and other uranium-bearing environments. Its formation is linked to the oxidation of primary uranium minerals and subsequent alteration processes.
In terms of physical properties, epicoxite typically appears as crusts or thin layers that range in color from pale yellow to orange-brown. It possesses a non-metallic luster and is translucent to opaque. Epicoxite has a distinct chemical composition, mainly consisting of uranium, oxygen, and hydrogen, with traces of other elements like carbon, sulfur, and chlorine. Its specific gravity is typically around 4.46, and its hardness falls within the range of 2 to 3 on the Mohs scale.
Due to its radioactivity, epicoxite has limited applications outside of scientific research. It is mainly studied for its geological significance and its role in the formation and alteration of uranium deposits. As a radioactive mineral, it requires handling and storage precautions to ensure safety and minimize exposure to radiation.
Overall, epicoxite is a specialized mineral primarily known for its occurrence in uranium-rich environments and its geological significance. Its unique properties and formation process make it a subject of study among geologists and mineralogists.