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Howlite
Howlite

Jacobsite
Jacobsite



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Howlite
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Jacobsite

Howlite and Jacobsite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
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-
-
2.45-2.58
Conchoidal
None
3-3.5
Ca 2B 5SiO 9(OH) 5Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
 
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-
-
4.76-5.03
Conchoidal
None
5.5-6.5
(Mn2+ ,Fe2+ ,Mg)(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)

Howlite and Jacobsite Chemical Formula

While comparing Howlite and Jacobsite 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 Howlite and Jacobsite chemical formula.

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Howlite and Jacobsite Specific Gravity

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