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Fire Agate
Fire Agate

Andalusite
Andalusite



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Fire Agate
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Andalusite

Fire Agate and Andalusite Physical Properties

Physical Properties

Tenacity

-
-

Solubility

-
-

Durability

-
-

Specific Gravity

2.60-2.643.05-3.21
1 7.18
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Fracture

Uneven, Splintery, Conchoidal
Uneven, Subconchoidal, Splintery

Cleavage

Absent
Good on {110}, poor on {100}

Mohs Hardness

6.5-77.5
2 10
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Chemical Composition

SiO 2Arthur Thomas , Gemstones (2009)
Al 2SiO 5Michael O’Donoghue , Gems, Sixth edition (2006) More from other references

Fire Agate and Andalusite Chemical Formula

While comparing Fire Agate 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 Fire Agate and Andalusite chemical formula.

  • Chemical formula of Fire Agate- SiO 2Arthur Thomas , Gemstones (2009)
  • Chemical formula of Andalusite- Al 2SiO 5Michael O’Donoghue , Gems, Sixth edition (2006) More from other references

Fire Agate and Andalusite Specific Gravity

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