Difference between revisions of "Template:Sphalerite"

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! colspan=2 | Sphalerite
 
! colspan=2 | Sphalerite
 
|-
 
|-
| Chemical composition || Zinc Sulphide
+
| Chemical composition || (Zn,Fe)S
 
|-
 
|-
 
| Crystal system || [[Crystals_&_Their_Structure#Cubic_Crystal_System | Cubic]]
 
| Crystal system || [[Crystals_&_Their_Structure#Cubic_Crystal_System | Cubic]]
 
|-
 
|-
| Habit || edit me
+
| Habit || Tetrahedral or dodecahedral
 
|-
 
|-
| Cleavage || perfect
+
| Cleavage || Perfect in 6 directions; easily developed
 
|-
 
|-
| Fracture || edit me
+
| Fracture || Concoidal to uneven
 
|-
 
|-
| Hardness || 3.5
+
| Hardness || 3.5-4.0
 
|-
 
|-
| Optic nature || edit me
+
| Optic nature || Isotropic
 
|-
 
|-
| Refraction index || 2.36 - 2.37
+
| Refractive index || 2.368 - 2.50 (increases with Fe content)
 
|-  
 
|-  
| Birefringence || none
+
| Specific gravity || 3.95-4.10
 
|-
 
|-
| Dispersion || edit me
+
| Lustre || Adamantine to Subadamantine
|-
 
| Specific gravity || 4.09
 
|-
 
| Lustre || Metallic to Vitreous
 
|-
 
| Pleochroism || edit me
 
 
|}
 
|}
 
__ToC__
 

Latest revision as of 11:22, 24 December 2006

Sphalerite
Chemical composition (Zn,Fe)S
Crystal system Cubic
Habit Tetrahedral or dodecahedral
Cleavage Perfect in 6 directions; easily developed
Fracture Concoidal to uneven
Hardness 3.5-4.0
Optic nature Isotropic
Refractive index 2.368 - 2.50 (increases with Fe content)
Specific gravity 3.95-4.10
Lustre Adamantine to Subadamantine