Properties of Gneiss and Hornfels

Gneiss

Hornfels

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1 Properties

1.1 Physical Properties

1.1.1 Hardness

72-3

1 7

1.1.2 Grain Size

Medium to Coarse Grained

Fine Grained

1.1.3 Fracture

Irregular

Conchoidal

1.1.4 Streak

White

Unknown

1.1.5 Porosity

Very Less Porous

Highly Porous

1.1.6 Luster

Dull

Shiny

1.1.7 Compressive Strength

125.00 N/mm²5.80 N/mm²

0.15 450

1.1.8 Cleavage

Poor

Perfect

1.1.9 Toughness

1.2

Not Yet Found

1.1.10 Specific Gravity

2.5-2.73.4-3.9

0 8.4

1.1.11 Transparency

Translucent to Opaque

Opaque

1.1.12 Density

2.6-2.9 g/cm³0.25-0.30 g/cm³

0 1400

1.2 Thermal Properties

1.2.1 Specific Heat Capacity

NA0.84 kJ/Kg K

0.14 3.2

1.2.2 Resistance

Heat Resistant, Pressure Resistant, Scratch Resistant, Wear Resistant

Heat Resistant, Impact Resistant, Pressure Resistant

Gneiss vs Hornfels Properties

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