Labradorite and Periclase Physical Properties

Labradorite

Periclase

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.69-2.723.7-3.9

1 7.18

1.5 Fracture

Uneven, Conchoidal, Gems, Sixth Edition (2006)

Conchoidal, Brittle

1.6 Cleavage

Perfect on {001}, less perfect on {010}, intersecting at near 90°; distinct on {110}

{001} perfect; {111} imperfect, may exhibit parting on , {011}

1.7 Mohs Hardness

6-6.55.5-6

2 10

1.8 Chemical Composition

(Na,Ca)_1-2Si_3-2O₈

MgOMichael OâDonoghue , Gems, Sixth Edition (2006)

Labradorite and Periclase Chemical Formula

While comparing Labradorite and Periclase 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 Labradorite and Periclase chemical formula.

Chemical formula of Labradorite- (Na,Ca)_1-2Si_3-2O₈
Chemical formula of Periclase- MgOMichael OâDonoghue , Gems, Sixth Edition (2006)

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Labradorite and Periclase Specific Gravity

Another important criteria for qualitative analysis of gemstones is Labradorite and Periclase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Labradorite and Periclase Optical Properties during the identification of gemstone. Specific gravity of Labradorite is 3.7-3.9 whereas that of Periclase is 3.7-3.9.