Britholite-(Y)
(Y,Ca)5(SiO4)3OH
IMA renamed
Durezza Mohs5 (graffiata dall'acciaio)
1. Talco
2. Gesso
3. Calcite
4. Fluorite
5. Apatite
6. Ortoclasio
7. Quarzo
8. Topazio
9. Corindone
10. Diamante
135710
Più duro di fluorite (4)
องค์ประกอบ
Composizione (% in peso)
Y
O
Si
- YYttrium60.3%
- OOxygen28.2%
- SiSilicon11.4%
- HHydrogen0.1%
นิรุกติศาสตร์
ตั้งชื่อตาม britholite-(Ce).