Lazulite and Siderite Physical Properties

Lazulite

Siderite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.04-3.173.83-3.89

1 7.18

1.5 Fracture

Uneven, Uneven, Gemstones of the world (2001) More from other references

Uneven, Conchoidal, UnevenArthur Thomas, Brittle

1.6 Cleavage

{001} Indistinct, {???} Indistinct

Perfect on {01 1 1}

1.7 Mohs Hardness

5.53.5-4.5

2 10

1.8 Chemical Composition

(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references

Fe2+ CO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Lazulite and Siderite Chemical Formula

While comparing Lazulite and Siderite 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 Lazulite and Siderite chemical formula.

Chemical formula of Lazulite- (Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
Chemical formula of Siderite- Fe2+ CO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Lazulite and Siderite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Lazulite and Siderite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Lazulite and Siderite Optical Properties during the identification of gemstone. Specific gravity of Lazulite is 3.83-3.89 whereas that of Siderite is 3.83-3.89.