Properties of Obsidian and Dacite

Obsidian

Dacite

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1 Properties

1.1 Physical Properties

1.1.1 Hardness

5-5.52-2.25

1 7

1.1.2 Grain Size

Not Applicable

Medium to Fine Coarse Grained

1.1.3 Fracture

Conchoidal

1.1.4 Streak

White

1.1.5 Porosity

Very Less Porous

Less Porous

1.1.6 Luster

Vitreous

Subvitreous to Dull

1.1.7 Compressive Strength

0.15 N/mm²NA

0.15 450

1.1.8 Cleavage

Non-Existent

Perfect

1.1.9 Toughness

Not Available

1.1.10 Specific Gravity

2.6-2.72.86-2.87

0 8.4

1.1.11 Transparency

Translucent

1.1.12 Density

2.6 g/cm³2.77-2.771 g/cm³

0 1400

1.2 Thermal Properties

1.2.1 Specific Heat Capacity

0.92 kJ/Kg K0.92 kJ/Kg K

0.14 3.2

1.2.2 Resistance

Heat Resistant, Impact Resistant

Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant

Obsidian vs Dacite Properties

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