Andalusite and Forsterite Physical Properties

Andalusite

Forsterite

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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

3.05-3.213.23-3.26

1 7.18

1.5 Fracture

Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)

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

1.6 Cleavage

Good on {110}, poor on {100}

Perfect on {010} imperfect on {100}

1.7 Mohs Hardness

7.56.5-7

2 10

1.8 Chemical Composition

Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Andalusite and Forsterite Chemical Formula

While comparing Andalusite and Forsterite 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 Andalusite and Forsterite chemical formula.

Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Chemical formula of Forsterite- Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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Andalusite and Forsterite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Andalusite and Forsterite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andalusite and Forsterite Optical Properties during the identification of gemstone. Specific gravity of Andalusite is 3.23-3.26 whereas that of Forsterite is 3.23-3.26.