Esperite and Tourmaline Physical Properties

Esperite

Tourmaline

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.28-4.422.85-3.35

1 7.18

1.5 Fracture

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

Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

Distinct on [010] and [100] poor on [101]

Indistinct

1.7 Mohs Hardness

5-5.57-7.5

2 10

1.8 Chemical Composition

PbCa 3Zn 4(SiO 4) 4Anthony et al , Handbook of mineralogy (2001)

Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.

Esperite and Tourmaline Chemical Formula

While comparing Esperite and Tourmaline 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 Esperite and Tourmaline chemical formula.

Chemical formula of Esperite- PbCa 3Zn 4(SiO 4) 4Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Tourmaline- Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.

Compare White Gemstones

Esperite Vs Hackmanite

Esperite Vs Hardystonite

Esperite Vs Hydrogrossular

Esperite and Tourmaline Specific Gravity

Another important criteria for qualitative analysis of gemstones is Esperite and Tourmaline Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Esperite and Tourmaline Optical Properties during the identification of gemstone. Specific gravity of Esperite is 2.85-3.35 whereas that of Tourmaline is 2.85-3.35.