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Trachyte
Trachyte

Tephrite
Tephrite



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1 Properties
1.1 Physical Properties
1.1.1 Hardness
66.5
Coal
1 7
1.3.2 Grain Size
Fine Grained
Medium to Fine Coarse Grained
1.3.3 Fracture
Not Available
Uneven
1.3.4 Streak
White
Bluish Black
1.3.5 Porosity
Less Porous
Very Less Porous
1.3.6 Luster
Metallic
Subvitreous to Dull
1.3.7 Compressive Strength
150.00 N/mm290.00 N/mm2
Properties of Obsidian
0.15 450
1.3.8 Cleavage
Not Available
Crenulation and Pervasive
1.3.9 Toughness
Not Available
2.4
1.3.10 Specific Gravity
2.72.86
Granite
0 8.4
1.3.11 Transparency
Opaque
Opaque
1.3.12 Density
2.43-2.45 g/cm32.8-2.9 g/cm3
Granite
0 1400
1.4 Thermal Properties
1.4.1 Specific Heat Capacity
NA0.92 kJ/Kg K
Properties of Granulite
0.14 3.2
1.4.2 Resistance
Heat Resistant, Impact Resistant, Wear Resistant
Heat Resistant, Impact Resistant