Difference between revisions of "Template:Fluorite"
From The Gemology Project
m |
|||
(5 intermediate revisions by 2 users not shown) | |||
Line 4: | Line 4: | ||
|- | |- | ||
| Chemical composition || CaF<sub>2</sub> | | Chemical composition || CaF<sub>2</sub> | ||
− | Calcium | + | Calcium fluoride |
|- | |- | ||
− | | Crystal system || | + | | Crystal system || [[Crystals_&_Their_Structure#Cubic_Crystal_System | Cubic]] |
|- | |- | ||
− | | Habit || | + | | Habit || Octahedral, cubes, interpenetrant twins |
|- | |- | ||
− | | Cleavage || | + | | Cleavage || Perfect, octahedral |
|- | |- | ||
− | | Fracture || | + | | Fracture || Conchoidal |
|- | |- | ||
| Hardness || 4 | | Hardness || 4 | ||
|- | |- | ||
− | | Optic nature || | + | | Optic nature || Isotropic |
|- | |- | ||
− | | | + | | Refractive index || 1.434 |
|- | |- | ||
− | | Birefringence || | + | | Birefringence || Isotropic |
|- | |- | ||
− | | Dispersion || | + | | Dispersion || Very low, 0.007 |
|- | |- | ||
| Specific gravity || 3.18 | | Specific gravity || 3.18 | ||
|- | |- | ||
− | | Lustre || | + | | Lustre || Poor vitreous |
|- | |- | ||
− | | Fluorescence || | + | | Fluorescence || Bluish-white, purple (LW) |
+ | |} |
Latest revision as of 13:32, 23 December 2006
Fluorite | |
---|---|
Chemical composition | CaF2
Calcium fluoride |
Crystal system | Cubic |
Habit | Octahedral, cubes, interpenetrant twins |
Cleavage | Perfect, octahedral |
Fracture | Conchoidal |
Hardness | 4 |
Optic nature | Isotropic |
Refractive index | 1.434 |
Birefringence | Isotropic |
Dispersion | Very low, 0.007 |
Specific gravity | 3.18 |
Lustre | Poor vitreous |
Fluorescence | Bluish-white, purple (LW) |