EXCAVATED OPEN PIT (STARTED IN 1956) JOINS CAPITAN ANDBLANCA WORKINGSJAHNS R.H. MICA DEPOSITS OF THE PETACA DISTRICT, RIO ARRIBACOUNTY, NEW MEXICO NMBM BULL. 25 1946 P 189REDMON D.E. RECONNAISSANCE OF SELECTED PEGMATITE DISTRICTSIN NORTH-CENTRAL NEW MEXICO USBM I.C. 8013 1961 P 19,33- 36BINGLER E.C. GEOLOGY AND MINERAL RESOURCES OF RIO ARRIBACOUNTY, NEW MEXICO NMBM BULL 91 1968 P 122USGS 7.5 MIN QUAD LA MADERA 1953