Properties of Obsidian and Tephrite

Obsidian

Tephrite

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1 Properties

1.1 Physical Properties

1.1.1 Hardness

5-5.56.5

1 7

1.1.2 Grain Size

Not Applicable

Medium to Fine Coarse Grained

1.1.3 Fracture

Conchoidal

Uneven

1.1.4 Streak

White

Bluish Black

1.1.5 Porosity

Very Less Porous

1.1.6 Luster

Vitreous

Subvitreous to Dull

1.1.7 Compressive Strength

0.15 N/mm²90.00 N/mm²

0.15 450

1.1.8 Cleavage

Non-Existent

Crenulation and Pervasive

1.1.9 Toughness

Not Available

2.4

1.1.10 Specific Gravity

2.6-2.72.86

0 8.4

1.1.11 Transparency

Translucent

Opaque

1.1.12 Density

2.6 g/cm³2.8-2.9 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

Obsidian vs Tephrite Properties

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