Properties of Porphyry and Obsidian

Porphyry

Obsidian

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1 Properties

1.1 Physical Properties

1.1.1 Hardness

6-75-5.5

1 7

1.1.2 Grain Size

Fine Grained

Not Applicable

1.1.3 Fracture

Irregular

Conchoidal

1.1.4 Streak

White

1.1.5 Porosity

Less Porous

Very Less Porous

1.1.6 Luster

Dull

Vitreous

1.1.7 Compressive Strength

NA0.15 N/mm²

0.15 450

1.1.8 Cleavage

Imperfect

Non-Existent

1.1.9 Toughness

1.7

Not Available

1.1.10 Specific Gravity

2.5-42.6-2.7

0 8.4

1.1.11 Transparency

Translucent to Opaque

Translucent

1.1.12 Density

2.5-2.52 g/cm³2.6 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

Porphyry vs Obsidian Properties

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