Properties of Gneiss and Tephrite

Gneiss

Tephrite

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1 Properties

1.1 Physical Properties

1.1.1 Hardness

76.5

1 7

1.1.2 Grain Size

Medium to Coarse Grained

Medium to Fine Coarse Grained

1.1.3 Fracture

Irregular

Uneven

1.1.4 Streak

White

Bluish Black

1.1.5 Porosity

Very Less Porous

1.1.6 Luster

Dull

Subvitreous to Dull

1.1.7 Compressive Strength

125.00 N/mm²90.00 N/mm²

0.15 450

1.1.8 Cleavage

Poor

Crenulation and Pervasive

1.1.9 Toughness

1.2

2.4

1.1.10 Specific Gravity

2.5-2.72.86

0 8.4

1.1.11 Transparency

Translucent to Opaque

Opaque

1.1.12 Density

2.6-2.9 g/cm³2.8-2.9 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, Impact Resistant

Gneiss vs Tephrite Properties

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