Creedite
Creedite is just a very sulfate that is unusual that was discovered near Creede, Colorado, United States Of America. It is a aluminum that is complex found just in a few locations global. Creedite is found as colorless, white, rose, lilac, orange and purple. Crystals tend to be in breathtaking groups that are radial.
The actual only real locations that are understood gem quality crystals of Creedite are Aqshatau, Qaraghandy Oblysy, Kazakhstan; Santa Eulalia District, Chihuahua, Mexico; San Pedro Mine, Mapimí, Durango, Mexico; Navidad Mine, Rodeo, Durango, Mexico; Dal’negorsk, Primorskiy Kray, Far-Eastern Region, Russia; Hall’s mine, San Antone District, Nye County, Nevada, United States Of America.
| Category: | Halide mineral |
| Formula: | Ca3Al2(SO4)(F,OH)10•2(H2O) |
| Crystallography: | Monoclinic – Prismatic |
| Crystal Habit: | Crystals are prismatic, bladelike to acicular to 8 cm; radiating, drusy to granular aggregates. |
| Twinning: | None |
| Cleavage: | [100] Perfect |
| Fracture: | Conchoidal |
| Tenacity: | Brittle |
| Moh’s Hardness: | 4.0 |
| Density: | 2.713 – 2.730 (g/cm3) |
| Radioactivity: | Not Radioactive |
| Color: | Colorless to white, orange, purple |
| Transparency: | Transparent to Translucent |
| Luster: | Vitreous |
| Refractive Index: | 1.461 – 1.485 Biaxial ( – ) |
| Birefringence: | 0.024 |
| Dispersion: | Strong |
| Pleochroism: | Colorless |
