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Greenstone , greenstone A low-grade, regional metamorphic rock containing actinolite, epidote, and albite, and lacking a cleavage. Greenstones form by metamorphis… Stone , stone / stōn/ • n. 1. the hard, solid, nonmetallic mineral matter of which rock is made, esp. as a building material: the houses are built of stone |… soapstone , soapstone •flagstone, ragstone •Blackstone, jackstone •sandstone • capstone • hearthstone •headstone • gemstone • whetstone •hailstone • gravestone •… Quarrying , quar·ry1 / ˈkwôrē; ˈkwä-/ • n. (pl. -ries) a place, typically a large, deep pit, from which stone or other materials are or have been extracted. • v.… Rock , rock1 / räk/ • n. 1. the solid mineral material forming part of the surface of the earth and other similar planets, exposed on the surface or underly… Igneous Rocks , Igneous rocks are formed by the cooling and hardening of molten magma. The word igneous comes from the Latin word igneus, meaning fire, and there are…
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