Difference between revisions of "Template:Aquamarine"

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! colspan=2 | Aquamarine
 
! colspan=2 | Aquamarine
 
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| Chemical composition || Aluminium Beryllium Silicate Al<sub>2</sub>Be<sub>3</sub>(Si<sub>6</sub>O<sub>18</sub>)
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| Chemical composition || Be<sub>3</sub>Al<sub>2</sub>(SiO<sub>3</sub>)<sub>6</sub> Beryllium aluminum silicate
 
|-
 
|-
 
| Crystal system || [[Crystals_&_Their_Structure#Hexagonal_Crystal_System | Hexagonal]]
 
| Crystal system || [[Crystals_&_Their_Structure#Hexagonal_Crystal_System | Hexagonal]]
 
|-
 
|-
| Habit || edit me
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| Habit || Prismatic
 
|-
 
|-
| Cleavage || edit me
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| Cleavage || Imperfect, basal, almost never seen
 
|-
 
|-
| Fracture || edit me
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| Hardness || 7.5 to 8
 
|-
 
|-
| Hardness || 7.5
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| Optic nature || Uniaxial -
 
|-
 
|-
| Optic nature || edit me
+
| Refractive index || 1.577-1.583 <br> (+0.017, - 0.017)
|-
 
| Refraction index || 1.57 - 1.58
 
 
|-  
 
|-  
| Birefringence || edit me
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| Birefringence || 0.005-0.009
 
|-
 
|-
| Dispersion || edit me
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| Dispersion || Low, 0.014
 
|-  
 
|-  
| Specific gravity || 2.69
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| Specific gravity || 2.72 <br>(+0.18,-0.5)
 
|-
 
|-
 
| Lustre || Vitreous
 
| Lustre || Vitreous
 
|-
 
|-
| Pleochroism || edit me
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| Pleochroism || Weak to moderate
 
|}
 
|}
 
__ToC__
 

Latest revision as of 11:53, 24 December 2006

Aquamarine
Chemical composition Be3Al2(SiO3)6 Beryllium aluminum silicate
Crystal system Hexagonal
Habit Prismatic
Cleavage Imperfect, basal, almost never seen
Hardness 7.5 to 8
Optic nature Uniaxial -
Refractive index 1.577-1.583
(+0.017, - 0.017)
Birefringence 0.005-0.009
Dispersion Low, 0.014
Specific gravity 2.72
(+0.18,-0.5)
Lustre Vitreous
Pleochroism Weak to moderate