Austinite and Ludlamite Physical Properties

Austinite

Ludlamite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Easily soluble in cold dilute HCl

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.123.1-3.2

1 7.18

1.5 Fracture

Brittle, Uneven, Brittle, Uneven

UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)

1.6 Cleavage

Good in two directions parallel to the prism faces {110}

Vitreous, pearly on cleavage

1.7 Mohs Hardness

4-4.53-4

2 10

1.8 Chemical Composition

CaZn(AsO4)(OH)

(Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Austinite and Ludlamite Chemical Formula

While comparing Austinite and Ludlamite 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 Ludlamite chemical formula.

Chemical formula of Austinite- CaZn(AsO4)(OH)
Chemical formula of Ludlamite- (Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Green Gemstones

Austinite Vs Clintonite

Austinite Vs Cordierite

Austinite Vs Apophyllite KF

Austinite and Ludlamite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Austinite and Ludlamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Austinite and Ludlamite Optical Properties during the identification of gemstone. Specific gravity of Austinite is 3.1-3.2 whereas that of Ludlamite is 3.1-3.2.