Mineral Concentrates, Pegmatites, Mims Spur, Wisconsin Range

7 Mineral Concentrates, Pegmatites, Mims Spur, Wisconsin Range  

All Rb and Sr concentrations of mica minerals were determined by isotpe dilution including blank corrections for Sr - 0.1 pg and  

WR = whole rock B = biotite M = muscovite, F = feldspar, T = tourmaline  

3 Chemical Analyses of Felsic Pyroclastic Rocks on Todd Ridge, Long Hills,  

A Todd Ridge, Long Hills (F-64-128,2) B Todd Ridge, Long HiUs (F-64-128,4) C Todd Ridge, Long Hills (F-64-128,10) D Mt. Webster, Harold Byrd Mtns ( 228) Analyses by A.S. McCreath and Son, Inc. 

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