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Anthracite
Anthracite

Dacite
Dacite



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Anthracite
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Dacite
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Properties

Hardness

Grain Size

Fracture

Streak

Porosity

Luster

Compressive Strength

Cleavage

Toughness

Specific Gravity

Transparency

Density

Specific Heat Capacity

Resistance

 
1-1.5
Medium to Fine Coarse Grained
Conchoidal
Black
Less Porous
Shiny
-
-
-
1.1-1.4
Opaque
1.25-2.5 g/cm3
1.32 kJ/Kg K
Heat Resistant, Water Resistant
 
2-2.25
Medium to Fine Coarse Grained
Conchoidal
White
Less Porous
Subvitreous to Dull
70.00 N/mm2
Perfect
-
2.86-2.87
Translucent
2.77-2.771 g/cm3
0.92 kJ/Kg K
Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant