Properties of Gneiss and Greywacke

Gneiss

Greywacke

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1 Properties

1.1 Physical Properties

1.1.1 Hardness

76-7

1 7

1.1.2 Grain Size

Medium to Coarse Grained

Angular and Fine

1.1.3 Fracture

Irregular

Conchoidal

1.1.4 Streak

White

1.1.5 Porosity

Very Less Porous

Highly Porous

1.1.6 Luster

Dull

1.1.7 Compressive Strength

125.00 N/mm²NA

0.15 450

1.1.8 Cleavage

Poor

Perfect

1.1.9 Toughness

1.2

2.6

1.1.10 Specific Gravity

2.5-2.72.2-2.8

0 8.4

1.1.11 Transparency

Translucent to Opaque

Opaque

1.1.12 Density

2.6-2.9 g/cm³2.6-2.61 g/cm³

0 1400

1.2 Thermal Properties

1.2.1 Specific Heat Capacity

NANA

0.14 3.2

1.2.2 Resistance

Heat Resistant, Pressure Resistant, Scratch Resistant, Wear Resistant

Heat Resistant, Impact Resistant, Pressure Resistant

Gneiss vs Greywacke Properties

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