113 Introduction 113 Location 113 Access and transportation 114 History 115 Field work and acknowledgments 116 Geology 116 General features 116 Geology of terraces 117 Chromiferous sand deposits 118 General character 118 Mineralogy 119 Origin and distribution 122 Reserves 125 Mining areas 127 South Slough region 127 Explored deposit 128 N^SWi sec. 36, T. 26 S., R. 14 W. 128 Other occurrences 128 NEiNE* sec. 13, T. 26 S., R. 14 W. 128 SWiNEi sec. 36, T. 26 S., R. 14 W. 128 Chickamin mine 128 sec. 25, T. 26 S., R. 14 W. 129 sec. 36, T. 26 S., R. 14 W. 129 sec. 36, T. 26 S., R. 14 W. 129 sec. 1, T. 27 S., R. 14 W. 129 Terrace area north of Coquille River 129 Explored deposits on the Seven Devils terrace ...... 130 Section 33 deposit 130 Section 4 deposit 132 Seven Devils (Last Chance) mine 132 Other occurrences on the Seven Devils terrace ...... 135 NEj sec. 5, T. 27 S., R. 14 W. 135 sec. 3 and NE£ sec. 4, T. 27 S., R. 14 W.,... 135 sec. 4, NE£ sec. 9, NW£ sec. 10, T. 27 S., R. 14 W 136 sec. 10 and NW£ sec. 15, T. 27 S., R. 14 Vt . 136 Near center sec. 15, T. 27 S., R. 14 H, ......... 137 Explored deposits on the Pioneer terrace 137 Shepard mine 137 Rose mine 138 Eagle and Pioneer mines 138 The Lagoons 140 Other occurrences on Pioneer terrace 141 Kendall mine 141 Coquille (Norman) mine 141 SE$ sec. 27, T. 27 S., R. 14 W. 141 Random exploration on the Pioneer terrace 141 Occurrence on Whisky Run terrace 141 Pivemile Point 141 Terrace area east and south of Bandon 142 Explored depos it 142 Geiger (Little) mine 142