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Lawsonite
Lawsonite

Siderite
Siderite



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Lawsonite
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Siderite

Lawsonite and Siderite Physical Properties

Physical Properties

Tenacity

Brittle
Brittle

Solubility

-
-

Durability

-
-

Specific Gravity

3.093.83-3.89
1 7.18
👆🏻

Fracture

Uneven
Uneven, Conchoidal

Cleavage

Perfect on {100} and {010}, imperfect on {101}
Perfect on {01 1 1}

Mohs Hardness

83.5-4.5
2 10
👆🏻

Chemical Composition

CaAl2Si2O7(OH)2.H2O
Fe2+ CO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Lawsonite and Siderite Chemical Formula

While comparing Lawsonite 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 Lawsonite and Siderite chemical formula.

  • Chemical formula of Lawsonite- CaAl2Si2O7(OH)2.H2O
  • Chemical formula of Siderite- Fe2+ CO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Lawsonite and Siderite Specific Gravity

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