Andalusite and Holmquistite Physical Properties

Andalusite

Holmquistite

Add ⊕

1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.05-3.212.95-3.13

1 7.18

1.5 Fracture

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

Not Available

1.6 Cleavage

Good on {110}, poor on {100}

{210} Perfect

1.7 Mohs Hardness

7.55-6

2 10

1.8 Chemical Composition

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

Li 2[(Mg,Fe2+ ) 3Al 2]Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)

Andalusite and Holmquistite Chemical Formula

While comparing Andalusite and Holmquistite 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 Andalusite and Holmquistite chemical formula.

Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Chemical formula of Holmquistite- Li 2[(Mg,Fe2+ ) 3Al 2]Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)

Compare Brown Gemstones

Andalusite Vs Augite

Andalusite Vs Baryte Barite

Andalusite Vs Baddeleyite

Andalusite and Holmquistite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Andalusite and Holmquistite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andalusite and Holmquistite Optical Properties during the identification of gemstone. Specific gravity of Andalusite is 2.95-3.13 whereas that of Holmquistite is 2.95-3.13.