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-___--__  53 Introduction... __.____---  56 Scope of report   56 Status of mining and prospecting in Colombia ____ 57 Maps.-__----___-____-_-__---_58 Personnel and acknowledgments __  _ 60 Geography and geology  61 Topographic features. _ 61 Economic geography___-  62 General geology: Andean province-___--_63 Pre-Cretaceous metamorphic and plutonic igneous rocks  64 Cordillera Oriental--_-___--- 65 Cordillera Central.  66Other ranges--____--_ 68 Paleozoic sedimentary rocks 68 Mesozoic sedimentary rocks.  69 Cordillera Occidental subprovince 69 Cordillera Oriental subprovince  _ 71 Tertiary sedimentary rocks 75 Marine strata _ 75 Nonmarine strata-___ 77 Post-Jurassic igneous rocks___- __ 79 Colombian mining law.  80 Generalstatement 80 Title by "adjudicaci6n"    81 "Contracts" (concessions) 82 Comment 83 Antimony. 84 Caldas...___..._. 85 La Gloria mine.__-__-____ 85 La Cristalina mine._ 85 Jesus Gomez' mine---_---_-____ 85 La Palma prospect_- 86 Other localities 86 Cauca 86 Tolima 86 El Diamante antimony concession 86 El Porvenir prospect 87 Other localities 87 Asbestos 87 Barite 88 Bauxite. . 90 Cement.  90 Antioquia. 90 Atldntieo 91 Cundinamarca_  91 Santander 92 Valle del Cauca 92 Chromite 92 Clay___. 93 zn

Mineral resources of Colombia (other than petroleum)