Bradleyite is yet another rare species for MSH.
PHYSICAL CHARACTERISTICS:
- Color is usually colorless or yellow.
- Luster is vitreous.
- Diaphaneity is transparent to translucent.
- Crystal System is monoclinic; P21m.
- Crystal Habits include tabular plates of crystals and lozenges.
- Cleavage ??.
- Fracture is ??.
- Hardness is 3.5
- Specific Gravity is approximately 2.72 g/cm3.
- Streak is white.
- Associated Minerals include bonshtedtite, burbankite, ilmenite,
lorenzenite and natrolite. - Distinguishing Features: Crystal habits.
- Origin: Named in 1941 for Wilmot Hyde Bradley, geologist,
U.S. Geological Survey.
| Dana class # | 43.2.1.1 – Phosphates, arssenates, and vanadates; compound phosphates, arsenates and vanadates; bradleyite group |
| Strunz class # | V/C.4-10 – Nitrates, carbonates & borates; water-free carbonates with unfamiliar anions; bradleyite – crawfordite series |