Achroite and Clinohedrite Physical Properties

Achroite

Clinohedrite

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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

2.90-3.403.28-3.335

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)

Brittle, Metallic, Brittle, Metallic

1.6 Cleavage

Not Available

{010} Perfect

1.7 Mohs Hardness

7-7.55.5

2 10

1.8 Chemical Composition

Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.

CaZnSiO 4 · H 2OAnthony et al , Handbook of mineralogy (2001)

Achroite and Clinohedrite Chemical Formula

While comparing Achroite and Clinohedrite 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 Achroite and Clinohedrite chemical formula.

Chemical formula of Achroite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
Chemical formula of Clinohedrite- CaZnSiO 4 · H 2OAnthony et al , Handbook of mineralogy (2001)

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Achroite and Clinohedrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Achroite and Clinohedrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Achroite and Clinohedrite Optical Properties during the identification of gemstone. Specific gravity of Achroite is 3.28-3.335 whereas that of Clinohedrite is 3.28-3.335.