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Vlasovite
Vlasovite

Howlite
Howlite



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Vlasovite
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Howlite

Vlasovite and Howlite Physical Properties

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1 Physical Properties
1.1 Tenacity
Brittle
Not Available
1.4 Solubility
Nearly insoluble in HCl and HNO3
Not Available
1.7 Durability
Not Available
Not Available
1.9 Specific Gravity
2.972.45-2.58
Amber
1 7.18
1.10 Fracture
Conchoidal, Brittle
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
1.11 Cleavage
Distinct on {010}
None
1.12 Mohs Hardness
63-3.5
Amber
2 10
1.13 Chemical Composition
Not Available
Ca 2B 5SiO 9(OH) 5Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Vlasovite and Howlite Chemical Formula

While comparing Vlasovite 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 Vlasovite and Howlite chemical formula.

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  • Chemical formula of Howlite- Ca 2B 5SiO 9(OH) 5Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Vlasovite and Howlite Specific Gravity

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