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Anhydrite
Anhydrite

Ulexite
Ulexite



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Anhydrite
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Ulexite

Anhydrite and Ulexite Physical Properties

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1 Physical Properties
1.1 Tenacity
Brittle
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.90-2.98
1.65-1.99
1.5 Fracture
Conchoidal, Brittle, Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
UnevenAnthony et al, Uneven, UnevenAnthony et al, Uneven, Brittle, Metallic
1.6 Cleavage
Rare tabular and prismatic crystals. Usually occurs as fibrous, parallel veins that break off into cleavage fragments.
{010} Perfect, {110} Perfect
1.7 Mohs Hardness
3.5
2-2.5
1.8 Chemical Composition
CaSO 4Michael O’Donoghue , Gems, Sixth edition (2006) More from other references
NaCaB 5O 6(OH) 6 · 5H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)

Anhydrite and Ulexite Chemical Formula

While comparing Anhydrite 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 Anhydrite and Ulexite chemical formula.

  • Chemical formula of Anhydrite- CaSO 4Michael O’Donoghue , Gems, Sixth edition (2006) More from other references
  • Chemical formula of Ulexite- NaCaB 5O 6(OH) 6 · 5H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)

Anhydrite and Ulexite Specific Gravity

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