ZIEGLEB, THE RAVENSWOOD GRANODIORITE 



Mineral Occurrences in the Granodiorite 



A summary of these occurrences for each individual constituent is as 

 follows, F denoting the absence of the mineral from the slide : 



Quartz 



Orthoclase 



Microcline 



Oligoclase 



Hornblende 



Augite 



Biotite 



