Annabergite and Ludlamite Physical Properties

Annabergite

Ludlamite

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1 Physical Properties

1.1 Tenacity

Sectile

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.073.1-3.2

1 7.18

1.5 Fracture

Brittle, Metallic, Brittle, Metallic, Brittle, Metallic

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

1.6 Cleavage

Perfect on {010}, indistinct on {100} and {102}

Vitreous, pearly on cleavage

1.7 Mohs Hardness

23-4

2 10

1.8 Chemical Composition

Ni3(AsO4)2•8(H2O)

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

Annabergite and Ludlamite Chemical Formula

While comparing Annabergite 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 Annabergite and Ludlamite chemical formula.

Chemical formula of Annabergite- Ni3(AsO4)2•8(H2O)
Chemical formula of Ludlamite- (Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Annabergite and Ludlamite Specific Gravity

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