Properties of Obsidian and Granite

Obsidian

Granite

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1 Properties

1.1 Physical Properties

1.1.1 Hardness

5-5.56-7

1 7

1.1.2 Grain Size

Not Applicable

Large and Coarse Grained

1.1.3 Fracture

Conchoidal

Not Available

1.1.4 Streak

White

1.1.5 Porosity

Very Less Porous

Less Porous

1.1.6 Luster

Vitreous

Dull to Grainy with Sporadic parts Pearly and Vitreous

1.1.7 Compressive Strength

0.15 N/mm²175.00 N/mm²

0.15 450

1.1.8 Cleavage

Non-Existent

Not Available

1.1.9 Toughness

Not Available

1.1.10 Specific Gravity

2.6-2.72.6-2.7

0 8.4

1.1.11 Transparency

Translucent

Opaque

1.1.12 Density

2.6 g/cm³2.65-2.75 g/cm³

0 1400

1.2 Thermal Properties

1.2.1 Specific Heat Capacity

0.92 kJ/Kg K0.79 kJ/Kg K

0.14 3.2

1.2.2 Resistance

Heat Resistant, Impact Resistant

Heat Resistant, Wear Resistant

Obsidian vs Granite Properties

Properties of Obsidian and Granite play an important role in determining the type of rock. Along with Obsidian vs Granite properties, get to know more about Obsidian Definition and Granite 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 Granite.