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Jacobsite and Ettringite Physical Properties


Ettringite and Jacobsite Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Partially soluble in water   

Durability
Not Available   
Not Available   

Specific Gravity
4.76-5.03   
1.77   

Fracture
Conchoidal, Brittle   
Not Available   

Cleavage
None   
Perfect on {10 1 0}   

Mohs Hardness
5.5-6.5   
2-2.5   

Chemical Composition
(Mn2+ ,Fe2+ ,Mg)(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)   
Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)   

Optical Properties >>
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Jacobsite and Ettringite Chemical Formula

While comparing Jacobsite and Ettringite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Jacobsite and Ettringite chemical formula.

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Jacobsite and Ettringite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Jacobsite and Ettringite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Jacobsite and Ettringite Optical Properties during the identification of gemstone. Specific gravity of Jacobsite is 1.77 whereas that of Ettringite is 1.77.

Brown Gemstones

Brown Gemstones


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