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Austinite
Austinite

Milarite
Milarite



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Austinite
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Milarite

Austinite and Milarite Physical Properties

Physical Properties

Tenacity

Brittle
-

Solubility

Easily soluble in cold dilute HCl
-

Durability

-
-

Specific Gravity

4.122.52-2.60
1 7.18
👆🏻

Fracture

Uneven
Uneven, Conchoidal

Cleavage

Good in two directions parallel to the prism faces {110}
{0001} Imperfect, {1120} Imperfect

Mohs Hardness

4-4.55.5-6
2 10
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Chemical Composition

CaZn(AsO4)(OH)
KCa 2AlBe 2Si 12O 30 · 0.5H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Austinite and Milarite Chemical Formula

While comparing Austinite and Milarite 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 Austinite and Milarite chemical formula.

  • Chemical formula of Austinite- CaZn(AsO4)(OH)
  • Chemical formula of Milarite- KCa 2AlBe 2Si 12O 30 · 0.5H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Austinite and Milarite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Austinite and Milarite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Austinite and Milarite Optical Properties during the identification of gemstone. Specific gravity of Austinite is 2.52-2.60 whereas that of Milarite is 2.52-2.60.