What is "carpholite"

n. (context mineral English) An orthorhombic-dipyramidal mineral containing aluminum, hydrogen, manganese, oxygen, and silicon.

Carpholite is a manganese silicate mineral with formula MnAlSiO(OH). It occurs as yellow clusters of slender prisms or needles. It crystallizes in the orthorhombic system.

The carpholite group includes ferrocarpholite, magnesiocarpholite, vanadiocarpholite, and potassiccarpholite.