Properties of Gneiss and Pseudotachylite

Gneiss

Pseudotachylite

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1 Properties

1.1 Physical Properties

1.1.1 Hardness

1 7

1.1.2 Grain Size

Medium to Coarse Grained

Very fine-grained

1.1.3 Fracture

Irregular

Uneven

1.1.4 Streak

White

Light to dark brown

1.1.5 Porosity

Very Less Porous

Less Porous

1.1.6 Luster

Dull

Vitreous

1.1.7 Compressive Strength

125.00 N/mm²60.00 N/mm²

0.15 450

1.1.8 Cleavage

Poor

Irregular

1.1.9 Toughness

1.2

Not Available

1.1.10 Specific Gravity

2.5-2.72.46-2.86

0 8.4

1.1.11 Transparency

Translucent to Opaque

Transparent to Translucent

1.1.12 Density

2.6-2.9 g/cm³2.7-2.9 g/cm³

0 1400

1.2 Thermal Properties

1.2.1 Specific Heat Capacity

NA0.92 kJ/Kg K

0.14 3.2

1.2.2 Resistance

Heat Resistant, Pressure Resistant, Scratch Resistant, Wear Resistant

Heat Resistant

Gneiss vs Pseudotachylite Properties

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