Howlite and Gaspeite Physical Properties

Howlite

Gaspeite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

HCl soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.45-2.583.71

1 7.18

1.5 Fracture

UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal

Uneven

1.6 Cleavage

None

{10 1 1} Good

1.7 Mohs Hardness

3-3.54.5-5

2 10

1.8 Chemical Composition

Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

(Ni,Mg,Fe++)CO3

Howlite and Gaspeite Chemical Formula

While comparing Howlite and Gaspeite 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 Gaspeite chemical formula.

Chemical formula of Howlite- Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Gaspeite- (Ni,Mg,Fe++)CO3

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Howlite and Gaspeite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Howlite and Gaspeite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Howlite and Gaspeite Optical Properties during the identification of gemstone. Specific gravity of Howlite is 3.71 whereas that of Gaspeite is 3.71.