Elbaite and Periclase Physical Properties

Elbaite

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

2.90-3.103.7-3.9

1 7.18

1.5 Fracture

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

Conchoidal, Brittle

1.6 Cleavage

Poor/indistinct on {1120} and {1011}

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

1.7 Mohs Hardness

75.5-6

2 10

1.8 Chemical Composition

Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references

MgOMichael OâDonoghue , Gems, Sixth Edition (2006)

Elbaite and Periclase Chemical Formula

While comparing Elbaite 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 Elbaite and Periclase chemical formula.

Chemical formula of Elbaite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references
Chemical formula of Periclase- MgOMichael OâDonoghue , Gems, Sixth Edition (2006)

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Elbaite and Periclase Specific Gravity

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