Durcissais

Durcissais is a rare and distinctive mineral, classified under the phosphate group. It was first discovered in 1897 in the Durcissa mine, located in the Ural Mountains of Russia. The mineral is named after the mine where it was found, reflecting its unique origin.

Durcissais is characterized by its distinctive crystal structure and vibrant color. It typically forms prismatic crystals that can reach up to 10 centimeters in length. The mineral exhibits a deep blue to violet color, which is quite unusual among phosphate minerals. This coloration is due to the presence of manganese and iron within its chemical composition.

The chemical formula of durcissais is (Mn,Fe)2(PO4)(OH). This formula indicates that the mineral contains manganese and iron in its structure, along with phosphate and hydroxide ions. The presence of these elements contributes to its distinctive color and physical properties.

Durcissais is relatively rare and is primarily found in a few locations around the world, including its type locality in the Ural Mountains. It is often associated with other phosphate minerals such as triphylite and vivianite. The mineral's rarity and unique properties make it a valuable specimen for collectors and researchers interested in mineralogy.

In summary, durcissais is a rare phosphate mineral known for its distinctive blue to violet color and prismatic crystal structure. It was first discovered in the Durcissa mine in the Ural Mountains and is characterized by its chemical composition, which includes manganese, iron, phosphate, and hydroxide ions. Its rarity and unique properties make it a notable specimen in the field of mineralogy.