Properties of Greywacke and Gneiss

Greywacke

Gneiss

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1 Properties

1.1 Physical Properties

1.1.1 Hardness

6-77

1 7

1.1.2 Grain Size

Angular and Fine

Medium to Coarse Grained

1.1.3 Fracture

Conchoidal

Irregular

1.1.4 Streak

White

1.1.5 Porosity

Highly Porous

Very Less Porous

1.1.6 Luster

Dull

1.1.7 Compressive Strength

NA125.00 N/mm²

0.15 450

1.1.8 Cleavage

Perfect

Poor

1.1.9 Toughness

2.6

1.2

1.1.10 Specific Gravity

2.2-2.82.5-2.7

0 8.4

1.1.11 Transparency

Opaque

Translucent to Opaque

1.1.12 Density

2.6-2.61 g/cm³2.6-2.9 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, Impact Resistant, Pressure Resistant

Heat Resistant, Pressure Resistant, Scratch Resistant, Wear Resistant

Greywacke vs Gneiss Properties

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