.................................................................................................................................ix Introduction ............................................................................................................................1 General Geology ....................................................................................................................2 Cerbat Mountain Range .........................................................................................................6 Kingman Feldspar Quarry Pegmatite.........................................................................10 Aquarius Mountain Range .....................................................................................................13 Rare Metals Pegmatite ...............................................................................................15 Wagon Bow Pegmatites .............................................................................................19 Petrography ............................................................................................................................22 Host Rock...................................................................................................................22 Quartz Diorite ............................................................................................................22 Granite........................................................................................................................23 Pegmatite....................................................................................................................25 Mineralogy .............................................................................................................................26 Microcline Feldspar ...................................................................................................26 Muscovite ...................................................................................................................37 Biotite .........................................................................................................................37 Fe/Ti Oxides...............................................................................................................41 Allanite .......................................................................................................................50 Monazite ....................................................................................................................59