Grandidierite and Siderite Physical Properties

Grandidierite

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

2.85-3.003.83-3.89

1 7.18

1.5 Fracture

Brittle, UnevenArthur Thomas, Gemstones (2009), Brittle, Uneven

Uneven, Conchoidal, UnevenArthur Thomas, Brittle

1.6 Cleavage

Perfect

Perfect on {01 1 1}

1.7 Mohs Hardness

7.53.5-4.5

2 10

1.8 Chemical Composition

(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.

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

Grandidierite and Siderite Chemical Formula

While comparing Grandidierite 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 Grandidierite and Siderite chemical formula.

Chemical formula of Grandidierite- (Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
Chemical formula of Siderite- Fe2+ CO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Green Gemstones

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Grandidierite and Siderite Specific Gravity

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