Basalt Granite Hardness

Basalt is an aphanitic fine grained igneous rock that is relatively low in silica and alkali metals it has less than 10 feldspathoid by volume with at least 65 of the rock consisting of feldspar in the form of plagioclase this places basalt in the basalt andesite field of the qapf diagram basalt is further distinguished from andesite by its silica content of less than 52. The streak of basalt is white to grey. It most commonly forms as an extrusive rock such as a lava flow but can also form in small intrusive bodies such as an igneous dike or a thin sill it has a composition similar to gabbro the difference between basalt and gabbro is that basalt is a fine grained rock while.

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Basalt is higher in rock hardness than that of coarser grained igneous rocks like granite compressive strength mpa 100 300 tensile strength mpa 10 30 shear strength mpa 20 60 bulk density.

Basalt granite hardness.

Basalt is available in black brown light to dark grey colors. Granite is available in black grey orange pink white colors whereas basalt is available in black brown light to dark grey colors. Basalt is a common extrusive igneous rock formed by the rapid cooling of basaltic lava exposed at or very near the surface of earth. The streak of a rock is the color of powder produced when it is dragged across an unweathered surface.

Appearance of granite is veined or pebbled and that of basalt is dull and soft. Properties of rock is another aspect for granite vs basalt. Basalt is a dark colored fine grained igneous rock composed mainly of plagioclase and pyroxene minerals. The hardness of granite is 6 7 and that of basalt is 6.

On moh s hardness scale the hardness of these. Basalt is usually much finer grained than granite so it would be virtually impossible to determine the hardness of the individual mineral crystals.

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