A porphyritic granite of medium grain and a general brownish red color, quarried at Milbank, South Dakota. (Saylor, 1952)
« Back to Glossary IndexCold Spring Carnelian
« Back to Glossary Index
A porphyritic granite of medium grain and a general brownish red color, quarried at Milbank, South Dakota. (Saylor, 1952)
« Back to Glossary Index