Properties of Gneiss and Tonalite

Gneiss

Tonalite

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1 Properties

1.1 Physical Properties

1.1.1 Hardness

76-7

1 7

1.1.8 Grain Size

Medium to Coarse Grained

Medium to Fine Coarse Grained

1.1.9 Fracture

Irregular

Conchoidal

1.1.10 Streak

White

Bluish Black

1.1.11 Porosity

Very Less Porous

1.1.12 Luster

Dull

Subvitreous to Dull

1.1.13 Compressive Strength

125.00 N/mm²NA

0.15 450

1.1.14 Cleavage

Poor

Not Available

1.1.15 Toughness

1.2

2.1

1.1.16 Specific Gravity

2.5-2.72.86-3

0 8.4

1.1.17 Transparency

Translucent to Opaque

Opaque

1.1.19 Density

2.6-2.9 g/cm³2.73 g/cm³

0 1400

1.2 Thermal Properties

1.2.1 Specific Heat Capacity

NA0.92 kJ/Kg K

0.14 3.2

1.3.2 Resistance

Heat Resistant, Pressure Resistant, Scratch Resistant, Wear Resistant

Heat Resistant, Pressure Resistant, Water Resistant

Gneiss vs Tonalite Properties

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