Chkalovite
Chkalovite is a really beryllium that is rare mineral that is discovered just in igneous rocks that are rich in salt and poor in silicon and aluminum contrasted with other, more typical igneous rocks. These kinds of igneous rocks are known as pegmatites that are agpaitic it is where many brand new and exotic minerals have been found. Chkalovite was discovered in 1938 on Malyi Punkaruaiv Mountain, Kola Peninsula, Russia. It is an gem that is extremely unusual gem quality crystals are rarely found and are frequently very tiny. Many material is opaque and massive white.
You will find just three known sources of Chkalovite; Poudrette quarry Mont Saint-Hilaire, Rouville County, Québec, Canada; Tasseq Slope, Ilimaussaq complex, Narsaq, Kitaa Province (West Greenland), Greenland; Karnasurt Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast’, Northern Region, Russia.
| Chemical Formula: | Na2Be(Si2O6) |
| Sodium Berylliom Silicate | |
| Molecular Weight: | 207.16 gm |
| Composition: | Sodium | 22.20 % | Na | 29.92 % | Na2O |
| Beryllium | 4.35 % | Be | 12.07 % | BeO | |
| Silicon | 27.11 % | Si | 58.01 % | SiO2 | |
| Oxygen | 46.34 % | O | |||
| 100.00 % | 100.00 % | = TOTAL OXIDE |
| Crystallography: | Orthorhombic – Pyramidal |
| Crystal Habit: | As complex equant crystals, to 5 mm; massive. |
| Twinning: | None |
| Cleavage: | Fair on {100}, indistinct in two other directions |
| Fracture: | Irregular/Uneven, Conchoidal |
| Tenacity: | Brittle |
| Moh’s Hardness: | 6.0 |
| Density: | 2.662 (g/cm3) |
| Luminescence: | None |
| Radioactivity: | Not Radioactive |
| Color: | Colorless, White |
| Transparency: | Transparent to Translucent |
| Luster: | Vitreous to Greasy |
| Refractive Index: | 1.544 – 1.549 Biaxial ( + ) |
| Birefringence: | 0.0050 |
| Dispersion: | Noticable |
| Pleochroism: | None |
