Zircon, monazite and other minerals used in the production of chemical compounds employed in the manufacture of lighting apparatus
A North Carolina Geological and Economic Survey report by state geologist Joseph Hyde Pratt, published at Raleigh in 1916 for miners, chemists and manufacturers working rare-earth minerals. Line illustrations include cross-section diagrams of magnetic separators with hatched pole pieces and arrowed ore paths, hand-lettered labels, and a stippled regional map of the monazite belt across the Carolinas and Georgia.
