﻿Plate 
  10 
  

  

  Fluorite 
  granite 
  from 
  Palmer 
  hill. 
  White 
  particles 
  are 
  fluorite, 
  gray 
  are 
  

   feldspar 
  and 
  the 
  black 
  crystals 
  are 
  magnetite. 
  A 
  lean 
  ore 
  grading 
  into 
  

   rich 
  magnetite 
  

  

  