Gedrite and Tourmaline Physical Properties

Gedrite

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

3.15-3.2592.85-3.35

1 7.18

1.5 Fracture

Not Available

Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

Gedrite Magnesiogedrite , Comments: Dark gray cleavage fragment of magnesiogedrite (gedrite). , Location: Bamble, Telemark, Norway. , Scale: See Image.

Indistinct

1.7 Mohs Hardness

5.5-67-7.5

2 10

1.8 Chemical Composition

(Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony 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.

Gedrite and Tourmaline Chemical Formula

While comparing Gedrite 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 Gedrite and Tourmaline chemical formula.

Chemical formula of Gedrite- (Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony 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.

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Gedrite and Tourmaline Specific Gravity

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