Difference between revisions of "Template:Rock Crystal"

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| Crystal system || [[Crystals_&_Their_Structure#Trigonal_Crystal_System | Trigonal]]
 
| Crystal system || [[Crystals_&_Their_Structure#Trigonal_Crystal_System | Trigonal]]
 
|-
 
|-
| Habit || edit me
+
| Habit || prismatic
 
|-
 
|-
 
| Cleavage || poor
 
| Cleavage || poor
 
|-
 
|-
| Fracture || very brittle, conchoidal
+
| Fracture || conchoidal
 
|-
 
|-
 
| Hardness || 7
 
| Hardness || 7
 
|-
 
|-
| Optic nature || edit me
+
| Optic nature || uniaxial +
 
|-
 
|-
 
| Refractive index || 1.544 - 1.553
 
| Refractive index || 1.544 - 1.553
Line 21: Line 21:
 
| Birefringence || 0.009
 
| Birefringence || 0.009
 
|-
 
|-
| Dispersion || 0.013
+
| Dispersion || low, 0.013
 
|-  
 
|-  
| Specific gravity ||  
+
| Specific gravity || 2.65
 
|-
 
|-
 
| Lustre || Vitreous
 
| Lustre || Vitreous
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| Pleochroism || None
 
| Pleochroism || None
 
|}
 
|}
 
__ToC__
 

Revision as of 04:27, 9 November 2006

Rock Crystal (Clear Quartz)
Chemical composition Silicon Dioxide SiO2
Crystal system Trigonal
Habit prismatic
Cleavage poor
Fracture conchoidal
Hardness 7
Optic nature uniaxial +
Refractive index 1.544 - 1.553
Birefringence 0.009
Dispersion low, 0.013
Specific gravity 2.65
Lustre Vitreous
Pleochroism None