Umbalite and Tourmaline Physical Properties

Umbalite

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

3.62-4.332.85-3.35

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalGemdat.org, Management Team (2012)

Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

Not Available

Indistinct

1.7 Mohs Hardness

7-7.57-7.5

2 10

1.8 Chemical Composition

Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)

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

Umbalite and Tourmaline Chemical Formula

While comparing Umbalite 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 Umbalite and Tourmaline chemical formula.

Chemical formula of Umbalite- Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)
Chemical formula of Tourmaline- Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.

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Umbalite and Tourmaline Specific Gravity

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