Shigaite and Edenite Physical Properties

Shigaite

Edenite

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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

2.323.05-3.37

1 7.18

1.5 Fracture

Flexible Flexible fragments.

Conchoidal, Brittle, Conchoidal

1.6 Cleavage

Perfect on {0001}

Good on (110)

1.7 Mohs Hardness

25-6

2 10

1.8 Chemical Composition

Not Available

NaCa2Mg5Si7AlO22(OH)2

Shigaite and Edenite Chemical Formula

While comparing Shigaite and Edenite 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 Edenite chemical formula.

Chemical formula of Edenite- NaCa2Mg5Si7AlO22(OH)2

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Shigaite and Edenite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Shigaite and Edenite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Shigaite and Edenite Optical Properties during the identification of gemstone. Specific gravity of Shigaite is 3.05-3.37 whereas that of Edenite is 3.05-3.37.