Magnesite
Magnesite is a mineral wi the chemical formula MgCO3 (magnesium carbonate).
| Magnesite | |
|---|---|
 Magnesite frae Bahia, Brazil (9.7 x 7.1 x 6 cm) | |
| General | |
| Category | Carbonate mineral |
| Formula (repeatin unit) | MgCO3 |
| Strunz clessification | 05.AB.05 |
| Creestal seestem | Trigonal - Hexagonal Scalenohedral H-M Seembol 32/m Space Group: R3c |
| Identification | |
| Colour | Colourless, white, fauch yellae, fauch broun, faint pink, lilac-rose |
| Creestal habit | Uisually massive, rare as rhombohedrons or hexagonal prisms |
| Cleavage | [1011] perfect |
| Fractur | Conchoidal |
| Tenacity | Brickle |
| Mohs scale haurdness | 3.5 - 4.5 |
| Skinkle | Vitreous |
| Streak | white |
| Diaphaneity | Skyre tae leamin |
| Speceefic gravity | 3.0 - 3.2 |
| Optical properties | Uniaxial (-) |
| Refractive index | nω=1.508 - 1.510 nε=1.700 |
| Birefringence | 0.191 |
| Fusibility | infusible |
| Solubility | Effervesces in het HCl |
| Ither chairacteristics | May exhibit fauch green tae fauch blae fluorescence an phosphorescence unner UV; triboluminescent |
| References | [1][2][3][4] |
References
eedit- ↑ http://rruff.geo.arizona.edu/doclib/hom/magnesite.pdf Handbook of Mineralogy
- ↑ http://www.mindat.org/min-2482.html Mindat.org
- ↑ http://webmineral.com/data/Magnesite.shtml Webmineral data
- ↑ Klein, Cornelis and Cornelius S. Hurlbut, Jr., Manual of Mineralogy, Wiley, 20th ed., p. 332 ISBN 0-471-80580-7