Properties of Obsidian and Slate

Obsidian

Slate

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1 Properties

1.1 Physical Properties

1.1.1 Hardness

5-5.53-4

1 7

1.1.2 Grain Size

Not Applicable

Very fine-grained

1.1.3 Fracture

Conchoidal

Splintery

1.1.4 Streak

White

Light to dark brown

1.1.5 Porosity

Very Less Porous

Less Porous

1.1.6 Luster

Vitreous

Dull

1.1.7 Compressive Strength

0.15 N/mm²30.00 N/mm²

0.15 450

1.1.8 Cleavage

Non-Existent

Slaty

1.1.9 Toughness

Not Available

1.2

1.1.10 Specific Gravity

2.6-2.72.65-2.8

0 8.4

1.1.11 Transparency

Translucent

Opaque

1.1.12 Density

2.6 g/cm³2.6-2.8 g/cm³

0 1400

1.2 Thermal Properties

1.2.1 Specific Heat Capacity

0.92 kJ/Kg K0.76 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 Slate Properties

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