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Home > Greywacke

Greywacke

Greywacke

Greywacke

Greywacke

Greywacke

Greywacke

A species of Sedimentary

Greywacke is a hard, dark-colored variety of sandstone sometimes used as a filler in construction. Taking on a subdued but attractive look when cut or polished, greywacke is sometimes used for flooring, decorative tiles, or flagstones. It may also be used in roads or seawalls.

Hardness:

6 - 7

Density:

2.6 - 2.61 g/cm³

General Info About Greywacke

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Physical Properties of Greywacke

Texture

Clastic

Colors

Gray to black, brown, yellow, etc.

Magnetism

Potentially Magnetic

Grain Size

Medium to coarse grained

Hardness

6 - 7 , Hard

Density

2.6 - 2.61 g/cm³, Normal Weight

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Rarity

Common

Characteristics of Greywacke

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Clasts of Greywacke

Quartz, lithics, minor feldspar ( orthoclase, plagioclase), pyroxene ( augite), mica (biotite, chlorite, muscovite); often quartz veins visible

Cultural Significance of Greywacke

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Uses of Greywacke

Greywacke is very hard, making it a prime candidate for construction materials, particularly walls and flooring, or as aggregate material for road paving. It has also be used as armor rock for sea walls, as well as ornamental stones in gardens.

Common Questions People Also Ask

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What type of rock is greywacke?

Is greywacke a metamorphic rock?

How is greywacke sandstone formed?

What minerals are in greywacke?

What does greywacke look like?

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