Sellaite and Andalusite Physical Properties

Sellaite

Andalusite

Add ⊕

1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.14-3.163.05-3.21

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

Perfect on {010} and {110}

Good on {110}, poor on {100}

1.7 Mohs Hardness

5-5.57.5

2 10

1.8 Chemical Composition

MgF 2Ulrich Henn and Claudio C.

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

Sellaite and Andalusite Chemical Formula

While comparing Sellaite 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 Sellaite and Andalusite chemical formula.

Chemical formula of Sellaite- MgF 2Ulrich Henn and Claudio C.
Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

Compare White Gemstones

Sellaite Vs Thomsonite

Sellaite Vs Sussexite

Sellaite Vs Strontianite

Sellaite and Andalusite Specific Gravity

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