Properties of Obsidian and Anorthosite

Obsidian

Anorthosite

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1 Properties

1.1 Physical Properties

1.1.1 Hardness

5-5.55-6

1 7

1.1.2 Grain Size

Not Applicable

Coarse Grained

1.1.3 Fracture

Conchoidal

Irregular

1.1.4 Streak

White

1.1.5 Porosity

Very Less Porous

Less Porous

1.1.6 Luster

Vitreous

Pearly to Subvitreous

1.1.7 Compressive Strength

0.15 N/mm²NA

0.15 450

1.1.8 Cleavage

Non-Existent

Irregular

1.1.9 Toughness

Not Available

1.1.10 Specific Gravity

2.6-2.72.62-2.82

0 8.4

1.1.11 Transparency

Translucent

1.1.12 Density

2.6 g/cm³2.7-4 g/cm³

0 1400

1.2 Thermal Properties

1.2.1 Specific Heat Capacity

0.92 kJ/Kg K0.84 kJ/Kg K

0.14 3.2

1.2.2 Resistance

Heat Resistant, Impact Resistant

Heat Resistant, Impact Resistant, Pressure Resistant, Scratch Resistant, Wear Resistant

Obsidian vs Anorthosite Properties

Properties of Obsidian and Anorthosite play an important role in determining the type of rock. Along with Obsidian vs Anorthosite properties, get to know more about Obsidian Definition and Anorthosite Definition. For the ease of understanding, the properties of rocks are divided into physical and thermal properties. Rocks have a variety of properties like hardness, color, specific gravity, fracture, cleavage, luster etc. Know all about physical and thermal properties of Obsidian and Anorthosite.