Properties of Pegmatite and Gneiss

Pegmatite

Gneiss

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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

1.1.3 Fracture

Conchoidal

Irregular

1.1.4 Streak

White

1.1.5 Porosity

Less Porous

Very Less Porous

1.1.6 Luster

Grainy, Pearly and Vitreous

Dull

1.1.7 Compressive Strength

178.54 N/mm²125.00 N/mm²

0.15 450

1.1.8 Cleavage

Perfect

Poor

1.1.9 Toughness

2.1

1.2

1.1.10 Specific Gravity

2.6-2.632.5-2.7

0 8.4

1.1.11 Transparency

Translucent to Opaque

1.1.12 Density

2.6-2.65 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

Pegmatite vs Gneiss Properties

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