 | | Report (issue) | | Data Set of World Phosphate Mines, Deposits, and Occurrences—Part A. Geologic Data By Carlotta B. Chernoff1...Orris2 Open-File Report 02–156–A 2002 Any use of trade, firm, or product names is for descriptive...Government. U.S. DEPARTMENT OF THE INTERIOR U.S. GEOLOGICAL SURVEY 1 University of Arizona, Tucson, Arizona...Arizona USGS, Tucson, Arizona 2 TABLE OF CONTENTS Page INTRODUCTION ……………………………………………………..…… 3 DATA SOURCES................. 38 2 INTRODUCTION An inventory of more than 1,600 world phosphate mines, deposits, | | | Report (issue) | | Data Set of World Phosphate Mines, Deposits, and Occurrences—Part B. Location and Mineral Economic Data...Chernoff2 Open-File Report 02–156–B 2002 Any use of trade, firm, or product names is for descriptive...DEPARTMENT OF THE INTERIOR U.S. GEOLOGICAL SURVEY 1 USGS, Tucson, Arizona University of Arizona, Tucson...Tucson, Arizona 2 TABLE OF CONTENTS Page INTRODUCTION ……………………………………………………..…… 3 DATA SOURCES, PROCESSING.................. 7 2 INTRODUCTION An inventory of more than 1,600 world phosphate mines, deposits, |
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