Minerals
Magnesiocarpholite
magnesiocarpholite
(Mg,Fe²⁺)Al2(Si2O6)(OH)4
Ferrocarpholite-Magnesiocarpholite Series: Mineral information, data ... — via www.mindat.org · Source
Overview
Magnesiocarpholite is a rare magnesium-bearing inosilicate mineral in the carpholite group, with ideal formula MgAl2Si2O6(OH)4. It typically forms very slender, acicular crystals with a silky appearance. Magnesiocarpholite occurs in high-pressure, low-temperature metamorphic rocks and is used by geologists as a marker for subduction-zone conditions in magnesium-rich sedimentary rocks.