Boulder Opal and Phlogopite Physical Properties

Boulder Opal

Phlogopite

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1 Physical Properties

1.1 Tenacity

Not Available

Tough

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

1.98-2.252.78-2.85

1 7.18

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

None, Uneven

1.6 Cleavage

Not Available

Perfect basal (001)

1.7 Mohs Hardness

5-6.52-2.5

2 10

1.8 Chemical Composition

SiO 2 + H 2OUlrich Henn and Claudio C.

Not Available

Boulder Opal and Phlogopite Chemical Formula

While comparing Boulder Opal and Phlogopite 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 Boulder Opal and Phlogopite chemical formula.

Chemical formula of Boulder Opal- SiO 2 + H 2OUlrich Henn and Claudio C.

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Boulder Opal Vs Chrysocolla

Boulder Opal Vs Chrome-Chalcedony

Boulder Opal and Phlogopite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Boulder Opal and Phlogopite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Boulder Opal and Phlogopite Optical Properties during the identification of gemstone. Specific gravity of Boulder Opal is 2.78-2.85 whereas that of Phlogopite is 2.78-2.85.