A PR]ELIMINARY RE PORT ON CLAYS OF FLORIDA 55


 CONTENTS PAGE
INTRODUCTION ......................................................... 61-63
 Scope of R eport ................................................... 61-62
 Field W ork ....................................................... 62-63
 Previous W ork on Florida Clays .................................... 63
 A cknow ledgm ents .................................................. 63
CHAPTER 1:
 G eneral Geology of Clays .......................................... 64-68
 D efinitio n ..................................................... 64
 Origin .................................................... 65-66
 Geologic Types of D eposits .................................... 66-68
 R esidual C lays ............................................ 66-67
 Sedim entary Clays ......................................... 67-68
 M arine C lays ......................................... 68
 Flood-Plain Clays ..................................... 68
 Lacustrine C lays ...................................... 68
 G lacial C lays ......................................... 68
 A eolian C lays ......................................... 68
CHAPTER 2:
 Classification of Clays ............................................. 69-71
 R ies's classification ............................................ 69-70
 Grout and Soper's classification.................................. 70
 Parm elee's classification ....................................... 70-71
CHAPTER 3:
 Mineralogy and Chemical Properties of Clays....................... 71-88
 M inerals in Unburned Clays ................................... 71-77
 K aolinite .................................................. 71-72
 Q u artz ................................................... 72
 F eldspar .................................................. 73
 M ica ..................................................... 73
 H ydrom ica ................................................ 73
 Limonite .................................................. 74
 H em atite .................................................. 74
 M agnetite ................................................. 74
 Siderite ................................................... 74
 P yrite .................................................... 74-75
 C alcite .................................................... 75
 G ypsum ................................................... 75-76
 R utile ..................................................... 76
 Ilm enite ................................................... 76
 G lauconite ................................................ 76
 C hlorite ................................................... 76
 D olom ite .................................................. 77
 H ornblende ............................................... 77
 G arnet ................................................... 77
 V ivianite .................................................. 77
 Pyrolusite and Psilomelane ................................. 77
 M inerals in Burned Clays ...................................... 78
 Chemical Analysis of Clays .................................... 79-81
 Chemical Effect of Various Constituents in Clays................. 81-88
 Silica ..................................................... 81
 A lum ina .................................................. 81
 Iron oxide ................................................ 81-82
 L im e ...................................................... 82-83
 M agnesia ................................................. 84
 A lkalies .................................................. 84