Hibonite ((Ca,Ce)(Al,Ti,Mg)12O19) is a brownish black mineral with a hardness of 7.5-8.0 and a hexagonal crystal structure. It is rare, but is found in high-grade metamorphic rocks on Madagascar. Some presolar grains in primitive meteorites consist of hibonite. Hibonite also is a common mineral in the Ca-Al-rich inclusions (CAIs) found in some chondritic meteorites. Hibonite is closely related to hibonite-Fe (IMA 2009-027, ((Fe,Mg)Al12O19)) an alteration mineral from the Allende meteorite.
Hibonite ((Ca, Ce) (Al, Ti, Mg) 12O19) ແມ່ນແຮ່ດໍາທີ່ມີສີແຂງຂອງ 7.5-8.0 ແລະມີໂຄງສ້າງທີ່ມີຮູບສາມຫລ່ຽມ. ມັນແມ່ນຫາຍາກ, ແຕ່ພົບເຫັນຢູ່ໃນໂງ່ນແກະ metamorphic ຊັ້ນສູງໃນ Madagascar. ບາງເມັດພືດທີ່ຢູ່ໃນເຄືອບດິນຕອນທໍາມະດາປະກອບດ້ວຍແຮ່ທາດ. Hibonite ຍັງເປັນແຮ່ທາດທົ່ວໄປໃນການປະສົມປະສານ Ca-Al ອຸດົມສົມບູນ (CAIs) ພົບເຫັນຢູ່ໃນບາງມະຫາສະມຸດ chondritic. Hibonite ແມ່ນກ່ຽວຂ້ອງຢ່າງໃກ້ຊິດກັບ Hibonite-Fe (IMA 2009-027, ((Fe, Mg) Al12O19)) ການປ່ຽນແປງແຮ່ທາດຈາກ Allende meteorite.