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Hemimorphite and Howlite Physical Properties


Howlite and Hemimorphite Physical Properties


Physical Properties

Tenacity
Brittle   
Not Available   

Solubility
Soluble   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.30-3.50   
2.45-2.58   

Fracture
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle   
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal   

Cleavage
Perfect on {110}, poor on {101}, {001} rare   
None   

Mohs Hardness
5   
3-3.5   

Chemical Composition
Zn 4Si 2O 7(OH) 2H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references   
Ca 2B 5SiO 9(OH) 5Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references   

Optical Properties >>
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Hemimorphite and Howlite Chemical Formula

While comparing Hemimorphite and Howlite 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 Hemimorphite and Howlite chemical formula.

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Hemimorphite and Howlite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hemimorphite and Howlite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hemimorphite and Howlite Optical Properties during the identification of gemstone. Specific gravity of Hemimorphite is 2.45-2.58 whereas that of Howlite is 2.45-2.58.

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Green Gemstones


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