Difference between revisions of "Template:Tigereye"
From The Gemology Project
m |
|||
Line 3: | Line 3: | ||
! colspan=2 | Agate | ! colspan=2 | Agate | ||
|- | |- | ||
− | | Chemical composition || | + | | Chemical composition || SiO<sub>2</sub> Silicon dioxide |
|- | |- | ||
| Crystal system || Trigonal | | Crystal system || Trigonal | ||
|- | |- | ||
− | | Habit || | + | | Habit || Aggregate |
|- | |- | ||
− | | Fracture || | + | | Fracture || Conchoidal |
|- | |- | ||
| Hardness || 6.5-7 | | Hardness || 6.5-7 |
Latest revision as of 21:05, 23 December 2006
Agate | |
---|---|
Chemical composition | SiO2 Silicon dioxide |
Crystal system | Trigonal |
Habit | Aggregate |
Fracture | Conchoidal |
Hardness | 6.5-7 |
Refractive index | ± 1.55 |
Specific gravity | 2.60 |
Lustre | Vitreous |