Ages for Fluorophlogopite at Birthday Mine (Birthday Claim; Birthday Area), Mountain Pass Mine (Mountain Pass Deposit; Mountain Pass Mine And Mill; Bastnaesite Deposit; Bastnäsite Deposit; Mountain Pass Carbonatite), Mountain Pass, Mountain Pass District, Clark Mts (Clark Mountain Range), San Bernardino Co., California, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 1563Ma - 1330Ma at this locality