Marialite and Howlite Physical Properties

Marialite

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

2.50

2.45-2.58

1.5 Fracture

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

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

1.6 Cleavage

Distinct on {100} and {110}

None

1.7 Mohs Hardness

5.5-6

3-3.5

1.8 Chemical Composition

3NaAlSi 3O 8 · NaClAnthony et al , Handbook of mineralogy (2001)

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

Marialite and Howlite Chemical Formula

While comparing Marialite 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 Marialite and Howlite chemical formula.

Chemical formula of Marialite- 3NaAlSi 3O 8 · NaClAnthony et al , Handbook of mineralogy (2001)
Chemical formula of Howlite- Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Marialite and Howlite Specific Gravity

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