Mineral | Pyrochlore Group |
---|---|
Formula | A2Nb2(O,OH)6Z A is Na, Ca, Sn2+, Sr, Pb2+, Sb3+, Y, U4+, H2O or ◻ |
Crystal Form | Isometric/Hexoctahedral [4/m 3 2/m] |
Cleavage | Distinct/Good |
Color | Brown, Yellow-brown, Reddish brown, Orange, Black |
Density | 4.3 – 4.9 g/cm3 |
Diaphaneity | Transparent |
Fracture | Irregular/Uneven, Splintery, Sub-Conchoidal |
Hardness | 5.0 - 5.5 |
Lustre | Vitreous, Resinous |
Streak | Light brown, Yellow-brown |
Dana 8 Class | 8.2.1.1 |
Strunz Class | 4/0.0- |
Mindat | mindat.org |
ID | 374 |