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Picrite
Picrite
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Tephrite
Tephrite
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Properties

Hardness

Grain Size

Fracture

Streak

Porosity

Luster

Compressive Strength

Cleavage

Toughness

Specific Gravity

Transparency

Density

Specific Heat Capacity

Resistance

 
6.8
Fine Grained
Uneven
White, Greenish White or Grey
Less Porous
Subvitreous to Dull
189.00 N/mm2
-
2.1
2.75-2.92
Opaque
1.5-2.5 g/cm3
0.88 kJ/Kg K
Heat Resistant
 
6.5
Medium to Fine Coarse Grained
Uneven
Bluish Black
Very Less Porous
Subvitreous to Dull
90.00 N/mm2
Crenulation and Pervasive
2.4
2.86
Opaque
2.8-2.9 g/cm3
0.92 kJ/Kg K
Heat Resistant, Impact Resistant

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