Staurolite and Vivianite Physical Properties

Staurolite

Vivianite

Add ⊕

1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.7-3.82.64-2.70

1 7.18

1.5 Fracture

Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle

(e.g. graphite).

1.6 Cleavage

Distinct on {010}

{010} Perfect

1.7 Mohs Hardness

7-7.5Not Available

2 10

1.8 Chemical Composition

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

Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.

Staurolite and Vivianite Chemical Formula

While comparing Staurolite and Vivianite 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 Vivianite chemical formula.

Chemical formula of Staurolite- (Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.
Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.

Compare Brown Gemstones

Staurolite Vs Triplite

Staurolite Vs Verdelite

Staurolite Vs Tourmaline

Staurolite and Vivianite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Staurolite and Vivianite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Staurolite and Vivianite Optical Properties during the identification of gemstone. Specific gravity of Staurolite is 2.64-2.70 whereas that of Vivianite is 2.64-2.70.