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grey blue rocks ball mill factory

grey blue rocks ball mill factory

Nov 17 2010 · The Brandywine Blue Gneiss is the new name given to the granulitefacies felsic gneisses in the Wilmington Complex Informally called the “blue rocks” this unit is a medium to coarsegrained lineated pinstriped twopyroxene gneiss with variable quartz content and thin discontinuous mafic layers pods and schlieren

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