related to refractory manufacturing.it behavier at elevated temperature.
2006-09-02 00:01:36 · 4 answers · asked by Awadhesh M 1 in Science & Mathematics ➔ Earth Sciences & Geology
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 consists of Hibonite.
2006-09-02 00:05:33 · answer #1 · answered by Smokey 5 · 4⤊ 0⤋
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 consists of Hibonite.
2006-09-02 08:11:04 · answer #2 · answered by Anonymous · 0⤊ 0⤋
(Ca,Ce)(Al,Ti,Mg)12O19 ) is a brownish black mineral with a hardness of 7,5-8,0 and a hexagonal cristall system. It is rare. Some presolar grains in primitive meteorites consists of Hibonit.
2006-09-02 07:03:56 · answer #3 · answered by Diamond in the Rough 6 · 0⤊ 0⤋
i think its a kind of hexagonal mineral rock needs to find out about its components though
2006-09-02 07:06:44 · answer #4 · answered by silly colie 1 · 0⤊ 0⤋