Difference between revisions of "Template:Chalcedony"

From The Gemology Project
Jump to: navigation, search
m
 
Line 7: Line 7:
 
| Crystal system || Trigonal
 
| Crystal system || Trigonal
 
|-
 
|-
| Habit || aggregate
+
| Habit || Aggregate
 
|-
 
|-
| Fracture || conchoidal
+
| Fracture || Conchoidal
 
|-
 
|-
 
| Hardness || 6.5-7
 
| Hardness || 6.5-7

Latest revision as of 17:59, 22 December 2006

Chalcedony
Chemical composition Silicon dioxide SiO2
Crystal system Trigonal
Habit Aggregate
Fracture Conchoidal
Hardness 6.5-7
Refractive index 1.535 - 1.539
Specific gravity 2.60
Lustre Vitreous