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image, left-mouse click & drag to rotate)
Physical
Properties of Calcite
Color |
Colorless, White
or Gray |
| Luster |
Non-Metallic,
Vitreous |
| Streak |
White |
| Cleavage |
3 directions,
perfect rhombehedral cleavage |
| Specific
Gravity |
2.71 |
| Hardness |
2.5 - 3 |
| Distinguishing
Characteristics |
Rhombehedral Cleavage,
Reaction with dilute HCl |
Optical
Properties of Calcite
Color |
Colorless to gray
|
| Pleochroism |
None |
| Relief |
Moderate to High
(variable with stage rotation) |
| Interference
Colors |
Extremely high
order grays with pastel colors in bands |
| Opical
System |
Uniaxial negative
|
| 2V Angle
|
- |
| Distinguishing
Characteristics |
Extreme birefringence,
Variable relief |
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