Mottramite and Andalusite Physical Properties

Mottramite

Andalusite

Add ⊕

1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

5.9

3.05-3.21

1.5 Fracture

Sub-Conchoidal, Brittle, Metallic

Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)

1.6 Cleavage

None observed

Good on {110}, poor on {100}

1.7 Mohs Hardness

7.5

1.8 Chemical Composition

Not Available

Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

Mottramite and Andalusite Chemical Formula

While comparing Mottramite and Andalusite 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 Mottramite and Andalusite chemical formula.

Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

Compare Brown Gemstones

Mottramite Vs Richterite

Mottramite Vs Super Seven Crystals

Mottramite Vs Shigaite

Mottramite and Andalusite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Mottramite and Andalusite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Mottramite and Andalusite Optical Properties during the identification of gemstone. Specific gravity of Mottramite is 3.05-3.21 whereas that of Andalusite is 3.05-3.21.