Archive for the ‘industrial rocks and minerals’ Category

Metamorphic rock

Metamorphic rock is the result of the transformation of an existing rock type, the protolith, in a process called metamorphism, which means “change in form”. The protolith is subjected to heat and pressure (temperatures greater than 150 to 200 °C and pressures of 1500 bars[1]) causing profound physical and/or chemical change. The protolith may be [...]

Posted on March 9, 2009 at 17:35 by admin · Permalink · Comments Closed
In: industrial rocks and minerals · Tagged with: 

Sedimentary rock

Sedimentary rock is one of the three main rock types (the others being igneous and metamorphic rock). Sedimentary rock is formed by deposition and consolidation of mineral and organic material and from precipitation of minerals from solution. The processes that form sedimentary rock occur at the surface of the Earth and within bodies of water. [...]

Posted on March 9, 2009 at 17:31 by admin · Permalink · Comments Closed
In: industrial rocks and minerals · Tagged with: