Hurlbutite and Howlite Physical Properties

Hurlbutite

Howlite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.902.45-2.58

1 7.18

1.5 Fracture

ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal

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

1.6 Cleavage

None

1.7 Mohs Hardness

63-3.5

2 10

1.8 Chemical Composition

CaBe 2(PO 4) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

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

Hurlbutite and Howlite Chemical Formula

While comparing Hurlbutite 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 Hurlbutite and Howlite chemical formula.

Chemical formula of Hurlbutite- CaBe 2(PO 4) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Howlite- Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Hurlbutite and Howlite Specific Gravity

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