Mineral | Allanite-(Ce) |
---|---|
Formula | {CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH) |
Crystal Form | Monoclinic/Prismatic [2/m] |
Cleavage | Imperfect on {001} ; Poor on {100} and {110} |
Color | Brown to Black |
Density | 3.5 – 4.2 g/cm3 |
Diaphaneity | Translucent, Opaque |
Fracture | Irregular/Uneven, Conchoidal |
Hardness | 5.5 - 6.0 |
Lustre | Vitreous, Resinous |
Streak | Brown, Greyish |
Type Loc. | Qáqarssuatsiaq, Aluk Isl., Kap Farvel, Kujalleq, Greenland |
Dana 8 Class | 58.2.1a.1 |
Strunz Class | 8/C.23-80 |
Mindat | mindat.org |
WebMineral | WebMineral |
ID | 409 |