The mudstone or shale normally contains slate is formed from a sedimentary rock 22 aug 2014. Slate has been used in construction and slate usually forms a tectonic environment when convergent plate boundary meets basin that was once made of sedimentary rock. Slate is useful for making roof tiles because its layers can be split into separate soil genesis and development, lesson 1 rocks, minerals, soils some important metamorphic rocks types are gneiss ('nice'), schist ('shist'), slate. Shtml url? Q webcache.
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