Properties of Pumice and Gneiss

Pumice

Gneiss

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1 Properties

1.1 Physical Properties

1.1.1 Hardness

1 7

1.1.2 Grain Size

Fine Grained

Medium to Coarse Grained

1.1.3 Fracture

Planar

Irregular

1.1.4 Streak

White, Greenish White or Grey

White

1.1.5 Porosity

Highly Porous

Very Less Porous

1.1.6 Luster

Earthy

Dull

1.1.7 Compressive Strength

51.20 N/mm²125.00 N/mm²

0.15 450

1.1.8 Cleavage

Perfect

Poor

1.1.9 Toughness

1.2

1.1.10 Specific Gravity

2.862.5-2.7

0 8.4

1.1.11 Transparency

Opaque

Translucent to Opaque

1.1.12 Density

0.25-0.3 g/cm³2.6-2.9 g/cm³

0 1400

1.2 Thermal Properties

1.2.1 Specific Heat Capacity

0.87 kJ/Kg KNA

0.14 3.2

1.2.2 Resistance

Impact Resistant, Pressure Resistant

Heat Resistant, Pressure Resistant, Scratch Resistant, Wear Resistant

Pumice vs Gneiss Properties

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