| Mineral | Effenbergerite |
|---|---|
| Formula | BaCu[Si4O10] |
| Crystal Form | Tetragonal/Ditetragonal-Dipyramidal [4/m 2/m 2/m] |
| Cleavage | Perfect on {001} |
| Color | Blue |
| Density | 3.5 – 3.6 g/cm3 |
| Diaphaneity | Transparent, Translucent |
| Fracture | Sub-Conchoidal |
| Hardness | 4.0 - 5.0 |
| Lustre | Vitreous |
| Streak | Light blue |
| Type Loc. | Wessels Mine, Hotazel, Kalahari Mn field, N. Cape Prov., South Africa |
| Dana 8 Class | 71.2.3.3 |
| Strunz Class | 8/H.02-30 |
| Mindat | mindat.org |
| WebMineral | WebMineral |
| ID | 391 |