Rocks are defined as aggregates or mixtures of minerals; rocks also include noncrystalline materials such as the natural glasses, and organic material such as coal. Rocks are found ready-made in nature. They are not homogeneous nor are they crystalline, although they may be made up of crystalline material. The composition...
Revised 1976 and 1985. Reprinted July 1987. 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
Everyone involved with the mining and petroleum industries, either directly or indirectly, is aware of the mounting concern by the general public with the possibly deleterious effects of mineral exploration and development on the environment. Oftentimes the outcry about "desecration of the land" is not based on actual knowledge of...
Published April 1964. 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