Greywacke is defined as a dark coarse-grained sandstone rock which contains more than 15 per cent clay
From German Grauwacke, from grau grey + wacke
Fine Grained Rock, Opaque Rock
Beige, Black, Brown, Cream, Dark Brown, Green, Grey, Light Green, Light to Dark Grey, Pink, Red, White, Yellow
Decorative Aggregates, Floor Tiles, Flooring, Homes, Interior Decoration
As Building Stone, As Facing Stone, Garden Decoration, Office Buildings, Paving Stone
Building houses or walls, Cement Manufacture, Construction Aggregate, for Road Aggregate, Raw material for the manufacture of mortar
Artifacts, Sculpture, Small Figurines
As armour rock for sea walls, Petroleum reservoirs, Sea Defence, Tombstones
Available in Lots of Colors and Patterns, Generally rough to touch, Non-vesicular, Veined
Archaeological Significance
Graywacke rock is a type of sedimentary rock, which is also known as immature sandstone, which is indurated, dark grey and consisting of poorly sorted angular to sub-angular, sand-sized grains.
Augite, Biotite, Calcite, Chlorite, Clay, Clay Minerals, Feldspar, Micas, Muscovite or Illite, Plagioclase, Pyroxene, Quartz
Aluminium Oxide, NaCl, CaO, Chromium(III) Oxide, Iron(III) Oxide, FeO, Potassium Oxide, Magnesium Carbonate, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide
Biological Weathering, Chemical Weathering
Coastal Erosion, Sea Erosion, Wind Erosion
Heat Resistant, Impact Resistant, Pressure Resistant
Deposits in Eastern Continents
China, India, Kazakhstan, Mongolia, Russia, Uzbekistan
Namibia, Nigeria, South Africa
Austria, Denmark, Germany, Great Britain, Netherlands, Norway, Poland, Sweden, Switzerland, United Kingdom
Deposits in Western Continents
Deposits in Oceania Continent
New South Wales, New Zealand
Information about Greywacke
Rocks are naturally occurring solids which are composed of minerals & have been used by humans since ages. From Stone Age, rocks are used for various purposes. Also, the metals and minerals found in rock play an important role in our life. Get to know all the Greywacke Uses. We have provided you with all information about Greywacke rock here. Greywacke is defined as a dark coarse-grained sandstone rock which contains more than 15 per cent clay. Greywacke is available in beige, black, brown, cream, dark brown, green, grey, light green, light to dark grey, pink, red, white, yellow colors. The streak of a rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Greywacke is white. Get to know more about Greywacke rock and characteristics of Greywacke rock in the next sections.