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Phlogopite
Phlogopite

Piemontite
Piemontite



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Phlogopite
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Piemontite

Phlogopite and Piemontite Physical Properties

Physical Properties

Tenacity

Tough
Brittle

Solubility

-
-

Durability

-
-

Specific Gravity

2.78-2.85-9999
1 7.18
👆🏻

Fracture

Uneven
Uneven, Splintery

Cleavage

Perfect basal (001)
[001] good, [100] distinct

Mohs Hardness

2-2.56-6.5
2 10
👆🏻

Chemical Composition

KMg3(Si3Al)O10(F,OH)2
Ca2Al3(SiO4)(Si2O7)O(OH)

Phlogopite and Piemontite Chemical Formula

While comparing Phlogopite and Piemontite 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 Phlogopite and Piemontite chemical formula.

  • Chemical formula of Phlogopite- KMg3(Si3Al)O10(F,OH)2
  • Chemical formula of Piemontite- Ca2Al3(SiO4)(Si2O7)O(OH)

Phlogopite and Piemontite Specific Gravity

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