Edenite and Howlite Physical Properties

Edenite

Howlite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.05-3.37

2.45-2.58

1.5 Fracture

Conchoidal, Brittle, Conchoidal

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

1.6 Cleavage

Good on (110)

None

1.7 Mohs Hardness

5-6

3-3.5

1.8 Chemical Composition

NaCa2Mg5Si7AlO22(OH)2

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

Edenite and Howlite Chemical Formula

While comparing Edenite 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 Edenite and Howlite chemical formula.

Chemical formula of Edenite- NaCa2Mg5Si7AlO22(OH)2
Chemical formula of Howlite- Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Edenite and Howlite Specific Gravity

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