Rhodochrosite and Oligoclase Physical Properties

Rhodochrosite

Oligoclase

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.0-3.3

2.62-2.67

1.5 Fracture

Uneven, Conchoidal, Conchoidal to uneven, Brittle

Gems, Sixth Edition (2006), Gems, Sixth Edition (2006), Uneven

1.6 Cleavage

On {10 1 1} perfect; parting on {10 1 2}

From the Greek, oligos and kasein, little cleavage.

1.7 Mohs Hardness

3.5-4

6-6.5

1.8 Chemical Composition

MnCO₃

Na(90-70%)Ca(10-30%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

Rhodochrosite and Oligoclase Chemical Formula

While comparing Rhodochrosite and Oligoclase 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 Rhodochrosite and Oligoclase chemical formula.

Chemical formula of Rhodochrosite- MnCO₃
Chemical formula of Oligoclase- Na(90-70%)Ca(10-30%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

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Rhodochrosite and Oligoclase Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rhodochrosite and Oligoclase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rhodochrosite and Oligoclase Optical Properties during the identification of gemstone. Specific gravity of Rhodochrosite is 2.62-2.67 whereas that of Oligoclase is 2.62-2.67.