Difference between revisions of "Template:Goshenite"

From The Gemology Project
Jump to: navigation, search
 
m
 
(8 intermediate revisions by 3 users not shown)
Line 3: Line 3:
 
! colspan=2 | Goshenite
 
! colspan=2 | Goshenite
 
|-
 
|-
| Chemical composition || edit me
+
| Chemical composition || Be<sub>3</sub>Al<sub>2</sub>(SiO<sub>3</sub>)<sub>6</sub> Beryllium aluminum silicate
 
|-
 
|-
| Crystal system || edit me
+
| Crystal system || [[Crystals_&_Their_Structure#Hexagonal_Crystal_System | Hexagonal]]
 
|-
 
|-
| Habit || edit me
+
| Habit || Prismatic
 
|-
 
|-
| Cleavage || edit me
+
| Cleavage || Poor, basal
 
|-
 
|-
| Fracture || edit me
+
| Fracture || Conchoidal to uneven
 
|-
 
|-
| Hardness || edit me
+
| Hardness || 7.5
 
|-
 
|-
| Optic nature || edit me
+
| Optic nature || Uniaxial -
 
|-
 
|-
| Refaction index || edit me
+
| Refractive index || 1.57 - 1.59
 
|-  
 
|-  
| Birefringence || edit me
+
| Birefringence || 0.004 - 0.009
 
|-
 
|-
| Dispersion || edit me
+
| Dispersion || Low, 0.014
 
|-  
 
|-  
| Specific gravity || edit me
+
| Specific gravity || 2.7 - 2.9
 
|-
 
|-
| Lustre || edit me
+
| Lustre || Vitreous
 
|-
 
|-
| Pleochroism || edit me
+
| Pleochroism || None
 
|}
 
|}
 
__ToC__
 

Latest revision as of 17:26, 23 December 2006

Goshenite
Chemical composition Be3Al2(SiO3)6 Beryllium aluminum silicate
Crystal system Hexagonal
Habit Prismatic
Cleavage Poor, basal
Fracture Conchoidal to uneven
Hardness 7.5
Optic nature Uniaxial -
Refractive index 1.57 - 1.59
Birefringence 0.004 - 0.009
Dispersion Low, 0.014
Specific gravity 2.7 - 2.9
Lustre Vitreous
Pleochroism None