Published 1909. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
A mineral map is often of considerable value to
those interested in miring work and development. Since
there are very few, if any such maps for Oregon, we have
endeavored to cover the ground, though only in an incomplete way, since the time we had for working upon it was...