Properties of Pumice and Tephrite

Pumice

Tephrite

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1 Properties

1.1 Physical Properties

1.1.1 Hardness

66.5

1 7

1.1.2 Grain Size

Fine Grained

Medium to Fine Coarse Grained

1.1.3 Fracture

Planar

Uneven

1.1.4 Streak

White, Greenish White or Grey

Bluish Black

1.1.5 Porosity

Highly Porous

Very Less Porous

1.1.6 Luster

Earthy

Subvitreous to Dull

1.1.7 Compressive Strength

51.20 N/mm²90.00 N/mm²

0.15 450

1.1.8 Cleavage

Perfect

Crenulation and Pervasive

1.1.9 Toughness

2.4

1.1.10 Specific Gravity

2.862.86

0 8.4

1.1.11 Transparency

Opaque

1.1.12 Density

0.25-0.3 g/cm³2.8-2.9 g/cm³

0 1400

1.2 Thermal Properties

1.2.1 Specific Heat Capacity

0.87 kJ/Kg K0.92 kJ/Kg K

0.14 3.2

1.2.2 Resistance

Impact Resistant, Pressure Resistant

Heat Resistant, Impact Resistant

Pumice vs Tephrite Properties

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