Calcite: Difference between revisions
Jump to navigation
Jump to search
No edit summary |
|||
| Line 130: | Line 130: | ||
--> | --> | ||
<!-- | |||
== Calcite in Pictures == | == Calcite in Pictures == | ||
=== On the object === | |||
=== Under the polarizing microscope === | |||
=== Under the scanning electron microscope (SEM) === | === Under the scanning electron microscope (SEM) === | ||
Revision as of 21:31, 27 February 2012
Authors: Hans-Jürgen Schwarz , Nils Mainusch
back to Carbonate
| This article will be released soon. |
| Calcite[1][2] | |
| |
| Mineralogical name | Calcite |
| Chemical name | Calcium carbonate |
| Trivial name | Calc spar |
| Chemical formula | CaCO3 |
| Other forms | CaCO3•H2O CaCO3•6H2O |
| Crystal system | trigonal |
| Crystal structure | |
| Deliquescence humidity 20°C | |
| Solubility (g/l) at 20°C | 0.014 g/l (25°C) |
| Density (g/cm³) | 2.72 g/cm3 |
| Molar volume | |
| Molar weight | 100.09 g/mol |
| Transparency | transparent to opaque |
| Cleavage | perfect |
| Crystal habit | |
| Twinning | |
| Phase transition | |
| Chemical behavior | |
| Comments | well soluble in 2M HCl |
| Crystal Optics | |
| Refractive Indices | no = 1.658 ne = 1.486 |
| Birefringence | Δ = 0.172 |
| Optical Orientation | negative |
| Pleochroism | |
| Dispersion | |
| Used Literature | |
| {{{Literature}}} | |
- ↑ http://webmineral.com/data/Calcite.shtml viewed on 09/06/2011
- ↑ http://www.mindat.org/min-859.html viewed on 09/06/2011