Bystrit is a rare recently discovered (1990) mineral , a framework silicate from the Cancrinite group. The chemical formula is (Na, K) 7 Ca (Si 6 Al 6 ) O 24 S 4.5 • (H 2 O). It was named after the find near the Malaya Bystraya river in the Slyudyansky district of the Irkutsk region, where it was first discovered [1] .
| Quick | |
|---|---|
| Formula | (Na, K) 7 Ca (Si 6 Al 6 ) O 24 S 4.5 • (H 2 O) |
| Physical properties | |
| Colour | Yellow |
| Trait color | Light yellow |
| Shine | Glassy |
| Transparency | Transparent, translucent |
| Hardness | five |
| Cleavage | Clear |
| Density | 2.43 g / cm³ |
| Syngonia | Cubic |
| Refractive index | 1,584 |
Being in nature
The mineral has not yet been found anywhere, except for the Malo-Bystrinsky deposit of lapis lazuli , 25 km. from the city of Slyudyanka [2] . Also, the mineral was found on the marble quarry Pass
Notes
- ↑ http://rruff.geo.arizona.edu/doclib/hom/bystrite.pdf Mineralogical reference
- ↑ Sapozhnikov A.N., Ivanov V.G., Piskunova L.F., Kashaev A.A., Terentyeva L.E., Pobedimskaya E.A. Bystr Ca (Na, K) 7 (Si6Al6O24) (S3) 1.5.H2O is a new cancrinite-like mineral. // Journal "Notes of RMO ", 1991, part 120, issue 3