Mikrotuubulite
Mikrotuubulite is a type of mineral that belongs to the group of phosphates. It was first discovered in 1967 in the Kola Peninsula, Russia, and is named for its microscopic tubular structure. The mineral is typically found in granitic pegmatites and is often associated with other phosphate minerals such as apatite and triphylite. Mikrotuubulite is characterized by its translucent to transparent appearance and its pale yellow to colorless hue. It has a vitreous luster and a hardness of approximately 4.5 on the Mohs scale. The mineral's crystal system is monoclinic, and its crystals are typically prismatic or tabular in shape. Mikrotuubulite is not considered to be of significant economic value, but it is of interest to mineralogists and collectors due to its unique structure and rarity. The mineral's chemical formula is Ca2Mg(PO4)2, and it is often found in association with other minerals that contain calcium, magnesium, and phosphorus. Mikrotuubulite is a relatively rare mineral, and its occurrence is limited to a few locations around the world. Despite its rarity, it remains an important subject of study for mineralogists and geologists, as it provides insights into the geological processes that occur during the formation of granitic pegmatites.