Properties of Coquina and Dacite

Coquina

Dacite

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1 Properties

1.1 Physical Properties

1.1.1 Hardness

1-22-2.25

1 7

1.1.2 Grain Size

Coarse Grained

Medium to Fine Coarse Grained

1.1.3 Fracture

Irregular

Conchoidal

1.1.4 Streak

White

1.1.5 Porosity

Highly Porous

Less Porous

1.1.6 Luster

Dull to Vitreous to Submetallic

Subvitreous to Dull

1.1.7 Compressive Strength

NANA

0.15 450

1.1.8 Cleavage

Not Available

Perfect

1.1.9 Toughness

Not Available

1.1.10 Specific Gravity

1.10-2.242.86-2.87

0 8.4

1.1.11 Transparency

Opaque

Translucent

1.1.12 Density

2.8-2.9 g/cm³2.77-2.771 g/cm³

0 1400

1.2 Thermal Properties

1.2.1 Specific Heat Capacity

NA0.92 kJ/Kg K

0.14 3.2

1.2.2 Resistance

Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant

Coquina vs Dacite Properties

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