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Mmon Bauxite Mineralogy Data

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Geology 9f the st.Helens quadrangle., oregon-washington introduction in 191fl the oregon department of geology and mineral industries began a mapping project in the st hele ns quadrangle in columbia county of orthwestern oregon as a part of the state geological survey.Dr.W.D.Wilkinson of oregon state collage was placed in charge of the survey and he was assisted by.