Vivianite and Ulexite Physical Properties

Vivianite

Ulexite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.64-2.701.65-1.99

1 7.18

1.5 Fracture

(e.g. graphite).

UnevenAnthony et al, Uneven, UnevenAnthony et al, Uneven, Brittle, Metallic

1.6 Cleavage

{010} Perfect

{010} Perfect, {110} Perfect

1.7 Mohs Hardness

Not Available2-2.5

2 10

1.8 Chemical Composition

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

NaCaB 5O 6(OH) 6 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

Vivianite and Ulexite Chemical Formula

While comparing Vivianite and Ulexite 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 Vivianite and Ulexite chemical formula.

Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
Chemical formula of Ulexite- NaCaB 5O 6(OH) 6 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

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Vivianite and Ulexite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Vivianite and Ulexite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Vivianite and Ulexite Optical Properties during the identification of gemstone. Specific gravity of Vivianite is 1.65-1.99 whereas that of Ulexite is 1.65-1.99.