Difference between revisions of "Template:Larimar"
From The Gemology Project
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| Chemical composition || NaCa<sub>2</sub>Si<sub>3</sub>O<sub>8</sub>(OH) | | Chemical composition || NaCa<sub>2</sub>Si<sub>3</sub>O<sub>8</sub>(OH) | ||
|- | |- | ||
− | | Crystal system || | + | | Crystal system || Triclinic |
|- | |- | ||
− | | Habit || | + | | Habit || Aggregate |
|- | |- | ||
| Hardness || 5 | | Hardness || 5 | ||
|- | |- | ||
− | | Optic nature || | + | | Optic nature || Biaxial + |
|- | |- | ||
| Refractive index || 1.59 - 1.63 | | Refractive index || 1.59 - 1.63 | ||
|- | |- | ||
| Birefringence || 0.028-0.038 | | Birefringence || 0.028-0.038 | ||
+ | |- | ||
+ | | Dispersion || Very weak | ||
|- | |- | ||
| Specific gravity || 2.62 - 2.87 | | Specific gravity || 2.62 - 2.87 | ||
|- | |- | ||
− | | Lustre || | + | | Lustre || Silky |
|- | |- | ||
− | | Fluorescence || | + | | Fluorescence || Yellow or orange (SW-UV) |
|} | |} |
Latest revision as of 17:07, 23 December 2006
Larimar | |
---|---|
Chemical composition | NaCa2Si3O8(OH) |
Crystal system | Triclinic |
Habit | Aggregate |
Hardness | 5 |
Optic nature | Biaxial + |
Refractive index | 1.59 - 1.63 |
Birefringence | 0.028-0.038 |
Dispersion | Very weak |
Specific gravity | 2.62 - 2.87 |
Lustre | Silky |
Fluorescence | Yellow or orange (SW-UV) |