Spurrite
| Refractive Index : 1.679 – 1.640 |
| Optical Characteristic : DR, B- |
| Specific Gravity : 3.00 |
| Formula : Ca5(SiO4)2(CO3) |
| Crystal System : Monoclinic |
| Variety/Species : All |
| Species/Group : spurrite |
| Birefringence : 0.039 |
| Dispersion : |
| Hardness : 5 |
| Toughness : poor |
| Ultrasonic : Never |
| Steam : Never |
| UV Long : Inert |
| UV Short : Inert |
| Pleochroism : None |
| Strength : N/A |
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| Pleochroism Colors : None |
| Heat : sensitive |
| Acids : sensitive |
| Light : stable |
| Polish Luster : vitreous |
| Fracture : conchoidal |
| Fracture Luster : |
| Clarity Type : N/A |
| Tones : N/A |
| Saturations : N/A |
| Cause of Color : |
| Enhancements : none |
| Cleavage : distinct 1 direction. |
| Color Range : Gray, lavender gray, purple grayish, purplish |
| Transparency : translucent to opaque |
| Phenomena : None |
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| Separations : Spurrite from- |
| Identifying Characteristics and information Rare. |
| Spectral Data not diagnostic |
| Trade Names and Misnomers Spurrite |
Tags: spurrite
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