Staurolite and Phosphophyllite Physical Properties

Staurolite

Phosphophyllite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

3.7-3.83.07-3.13

1 7.18

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Fracture

Subconchoidal, Conchoidal

Conchoidal, Uneven

Cleavage

Distinct on {010}

{100} Perfect, {010} Distinct, {102} Distinct

Mohs Hardness

7-7.53-3.5

2 10

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Chemical Composition

(Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.

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

Staurolite and Phosphophyllite Chemical Formula

While comparing Staurolite and Phosphophyllite 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 Staurolite and Phosphophyllite chemical formula.

Chemical formula of Staurolite- (Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.
Chemical formula of Phosphophyllite- Zn 2(Fe2+ ,Mn2+ )(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Staurolite and Phosphophyllite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Staurolite and Phosphophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Staurolite and Phosphophyllite Optical Properties during the identification of gemstone. Specific gravity of Staurolite is 3.07-3.13 whereas that of Phosphophyllite is 3.07-3.13.