alluvial gravels

How Do You Form A Sedimentary Fragmentary Rock?

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How Do You Form A Sedimentary Fragmentary Rock? Sedimentary rocks are formed by the lithification of inorganic and/or organic sediments, or as chemical precipitates. Clastic sedimentary rocks form when existing parent rock material is weathered, fragmented, transported, and deposited in layers that compact, cement, and lithify to form sedimentary rocks. How do they form in

Can You Find Gems In Gravel?

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Can You Find Gems In Gravel? For sifting through rocky topsoil quickly, rolling loose gravel around in a mining pan and rinsing it with water can help reveal gemstones hidden among the gravel. Can gemstones be found in gravel? Placer Deposits. Many important gems and precious metals are found in accumulations of sand and gravel,