Shigaite and Andesine Physical Properties

Shigaite

Andesine

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1 Physical Properties

1.1 Tenacity

Moderately ﬂexible

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.32

2.65-2.69

1.5 Fracture

Flexible Flexible fragments.

Uneven, Uneven, Conchoidal, Uneven, Gems, Sixth Edition (2006)

1.6 Cleavage

Perfect on {0001}

Perfect on {001}, good on {010}

1.7 Mohs Hardness

6-6.5

1.8 Chemical Composition

Not Available

(Na,Ca)Al_1-2Si_3-2O₈

Shigaite and Andesine Chemical Formula

While comparing Shigaite and Andesine 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 Shigaite and Andesine chemical formula.

Chemical formula of Andesine- (Na,Ca)Al_1-2Si_3-2O₈

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Shigaite and Andesine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Shigaite and Andesine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Shigaite and Andesine Optical Properties during the identification of gemstone. Specific gravity of Shigaite is 2.65-2.69 whereas that of Andesine is 2.65-2.69.