Lepidolite and Howlite Physical Properties

Lepidolite

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

2.80-2.902.45-2.58

1 7.18

1.5 Fracture

Uneven, UnevenArthur Thomas, Gemstones (2009)

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

1.6 Cleavage

{001} perfect

None

1.7 Mohs Hardness

2.53-3.5

2 10

1.8 Chemical Composition

Mg 3Si 4O 10(OH) 2Ulrich Henn and Claudio C.

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

Lepidolite and Howlite Chemical Formula

While comparing Lepidolite 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 Lepidolite and Howlite chemical formula.

Chemical formula of Lepidolite- Mg 3Si 4O 10(OH) 2Ulrich Henn and Claudio C.
Chemical formula of Howlite- Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Lepidolite and Howlite Specific Gravity

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