TABLE OF CONTENTS. 



PAGE. 



Letter of Transmittal t 1 



Geological Corps 3 



List of the Published Reports of the Alabama Geological 



Survey 5 



Table of the Geological Formations of Alabama 8 



CHAPTER I. 



Materials Used in the Manufacture of Iron 9 



The Ores 9 



1. Red Ore, or Hematite 10 



2. Brown Ore, or Limonite 13 



3. Gray Ore, or Magnetite 17 



4. Black Band and Clay Iron Stone IS 



Manganese Ores 18 



Bauxite 19 



The Coal 20 



The Warrior Coal Field 22 



The Plateau Region 22 



The Warrior Basin 23 



The Cahaba Field 24 



The Coosa Field 26 



The Stone 27 



Limestones and Dolomite 27 



Marbles 29 



Lithographic Stone 32 



CHAPTER II. 



Clays and Cement 33 



Kaolins, Clays, and Shales 3;1 



Koalins o3 



Clays 34 



China Clays 35 



Fire Clays 36 



Pottery, or Stoneware Clays 38 



Clays and Shales suitable for Portland Cement Making. . 40 



Shales and Clays, suitable for paving brick, etc. 42 



The Cement Resources of Alabama 42 



Slag Cement 42 



Portland Cement 42 



1. Trenton Limestone 43 



2. Bangor Limestone 45 



3. Selma Chalk 47 



4. St. Stephens Limestone 50 



