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coring |
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coring [′kȯr·iŋ] (metallurgy) A variable composition of individual crystals across a casting, due to nonequilibrium growth over a range of temperature; the purest material is near the center. (petroleum engineering) The use of a core barrel (hollow length of tubing) to take samples from the underground formation during the drilling operation; used for core analysis. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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The reduced values are most likely due to the washing away of soft powdery alunite, with which gold is closely associated, by drilling fluids used in the coring process. |
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