The Spruce Pine Mining District A Brief Review of the History, Geology and Modern Uses of the Minerals Mined in the Spruce Pine Mining District
Sandstone has been used for domestic construction and housewares since prehistoric times, and continues to be used. Sandstone was a popular building material from ...
Feldspar . Introduction . Feldspar is the most common rock-forming mineral (about 60% of the earth’s crust) (Kauffman and Van Dyk, 1994). The mineral name feldspar ...