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The Barstow-Newberry Springs Area, California

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The Barstow-Newberry Springs Area, California CALIFORNIA DEPARTMENT OF CONSERVATION DIVISION OF MINES AND GEOLOGY DMG OPEN-FILE REPORT 97-16 MINERAL LAND CLASSIFICATION OF A PART OF SOUTHWESTERN SAN BERNARDINO COUNTY: THE BARSTOW-NEWBERRY SPRINGS AREA, CALIFORNIA 1997 THE RESOURCES AGENCY STATE OF CALIFORNIA DEPARTMENT OF CONSERVATION DOUGLAS P. WHEELER PETE WILSON LAWRENCE J. GOLDZBAND SECRETARY FOR RESOURCES GOVERNOR DIRECTOR DIVISION OF MINES AND GEOLOGY JAMES F. DAVIS, STATE GEOLOGIST Copyright © 1997 by the California Department of Conservation, Division of Mines and Geology. All rights reserved. No part of this publication may be reproduced without written consent of the Division of Mines and Geology. 'The Department of Conservation makes no warranties as to the suitability of this product for any particular purpose." MINERAL LAND CLASSIFICATION OF A PART OF SOUTHWESTERN SAN BERNARDINO COUNTY: - THE BARSTOW-NEWBERRY SPRINGS AREA, CALIFORNIA By Stephen P. Bezore, Associate Geologist Division of Mines and Geology (DMG) With Contributions by Rodger H. Chapman, Senior Geophysicist, DMG, retired Gordon W. Chase, Associate Geophysicist, DMG, retired Leslie G. Youngs, Associate Engineering Geologist, DMG Robert L. Hill, Senior Geologist, DMG Russell V. Miller, Senior Geologist, DMG Dinah O. Shumway, Associate Geologist, DMG OPEN-FILE REPORT 97-16 1997 CALIFORNIA DEPARTMENT OF CONSERVATION DIVISION OF MINES AND GEOLOGY-- 801 K STREET, MS 12-30 SACRAMENTO, CA 95814 PREFACE The Surface Mining and Reclamation Act of 1975 (SMARA) was enacted to promote the conservation of the State's mineral resources and to ensure adequate reclamation of mined lands. Among other provisions, SMARArequires the State Geologist to classify land in California for mineral resource potential. Presently, mineral land classification studies are being conducted in several areas of the state on a county basis. Upon completion of each study, the State Geologist submits the mineral land classification report to the State Mining and Geology Board which accepts the report and transmits it to appropriate local governments that maintain jurisdictional authority in mining, reclamation, and related land-use activities. Within 12 months of receiving the mineral information, local governments are required to establish mineral resource management policies to be incorporated into their general plans, which must recognize the information submitted by the State Geologist. Among other considerations, the management policies will emphasize the conservation and development of identified mineral resources. CONTENTS Page PREFACE ............................................................ i EXECUTIVE SUMMARY .............................................. vii Index of Plates ....................................................... x PART I - MINERAL LAND CLASSIFICATION PROJECT - BACKGROUND AND SUPPORTING INFORMATION. .. .. 1 INTRODUCTION ................................................ 1 Background . .. 1 Scope ................................................... 4 Fieldwork and Research ..................................... 4 Geographic Setting .. .. 6 REGIONAL GEOLOGY . .. 6 Pre-Mesozoic Rocks . .. 8 Mesozoic Rocks ........................................... 9 Cenozoic Rocks .......................................... 10 Late Cenozoic Structure .................................... 11 MINING HISTORY .............................................. 12 Gold and Silver . .. 12 Calico District . .. 12 Ord District . .. 13 Borates ................................................. 14 Calico Mountains .................................... 14 PART 11- CALIFORNIA MINERAL LAND CLASSIFICATION SYSTEM ........... 16 MRZ CATEGORIES ............................................. 16 MINERAL RESOURCE/RESERVE CLASSIFICATION NOMENCLATURE .. 18 CLASSIFICATION CRITERIA ..................................... 20 PART III - MINERAL LAND CLASSIFICATION OF METALLIC AND INDUSTRIAL MINERAL RESOURCES ......................................... 21 MRZ NOTATION ............................................... 22 AREAS CLASSIFIED FOR DEPOSITS FORMED BY HYDROTHERMAL PROCESSES ............................................ 23 Areas Classified as MRZ-2b(h) ............................... 23 Calico Silver District, MRZ-2b(h.1) ........................ 23 Red Hill Deposit, MRZ-2b(h-2) ........................... 24 Areas Classified as MRZ-3a(h) ................................ 25 Desert King Mine Area, MRZ-3a(h-1) ...................... 25 ii Page West Mitchell Range, MRZ-3a<h-2) . .. 25 Lead Mountain, MRZ-3a(h-3) ............................ 25 Harvard Hill, MRZ-3a(h-4) . .. 25 Northwestem Cady Mountains, MRZ-3a(h-S) ................ 26 Southem Cady Mountains, MRZ-3a(h.6) ................... 26 Azucar Mine Area, MRZ-3a<h-7) . .. 26 . New Deal Mine Area, MRZ-3a(h-a) . .. 26 Ord Mountain, MRZ-3a<h-9) ............................. 26 East Ord Mountain. MRZ-3a<h-10) . .. 27 Northwestern Rodman Mountains, MRZ-3a<h-11) . .. 28 Lucky Don Juan Mine Area. MRZ_3a(h-12} . .. 28 Silver Cliff Mine Area, MRZ_3a<h-13) . .. 28 East of Silver Bell Wash, MRZ-3a<h-14) .................... 28 West Ord Mountains, MRZ-3a<h-15) ....................... 28 Pure Quill Mine Area, MRZ-3a(h-16) . .. 29 Anita Mine Area, MRZ-3a(h-17) . .. 29 Sinbad Mine Area, MRZ-3a(h-18) ......................... 29 Northem Fry Mountains, MRZ_3a(h-19) . .. 29 Red Hills, MRZ-3a(h-20) ................................ 30 East Lucerne Valley, MRZ-3a(h-21) ........................ 30 AREAS CLASSIFIED FOR DEPOSITS FORMED BY CONTACT METASOMATIC PROCESSES (SKARN) ....................... 30 Areas Classified as MRZ-2a{s) . .. 30 Morris Lode, MRZ-2a(s-1) . .. 30 Areas Classified as MRZ-2b(s) . .. 31 Camp Rock Valley, MRZ-2b(s-1) .......................... 31 Bessemer Mine, MRZ-2b<s-2) . .. 31 Areas Classified as MRZ-3a(s) ................................ 31 White Dollar Mine, MRZ-3a(s-1) .......................... 31 Copper Strand Mine, MRZ-3a(s-2) ........................ 31 Ebony Mine, MRZ-3a(s-3) ............................... 32 New Bessemer Mine, MRZ-3a(s-4) . .. 32 AREAS CLASSIFIED FOR DEPOSITS OF PLACER GOLD . .. 32 Areas Classified as MRZ-3a(P) . .. 32 Camp Rock Mine, MRZ-3a<P-1} . .. 32 AREAS CLASSIFIED FOR INDUSTRIAL MINERALS . .. 32 Areas Classified as MRZ-2a(l) . .. 33 Decora tIve· Roc k Quarnes, . MRZ -2 a(l-1:specialtystone) ............ 33 Bentonite Quarry Area, MRZ-2a(1-2:clay) .................... 33 Hectorite Clay Deposit, MRZ_2a(J-3:hectorite) .................. 33 Fort Cady Borate Deposit, MRZ_2a(l-4:borates) ................ 35 iii Page CONCLUSIONS . .. 41 ACKNOWLEDGMENTS . .. 43 REFERENCES CITED . .. 44 APPENDIX A: MINE AND PROSPECT DESCRIPTIONS - BARSTOW-NEWBERRY SPRINGS AREA ............................................' ... A1 APPENDIX B: GEOPHYSICAL EVALUATIONS OF MINERAL DEPOSITS IN THE CAMP ROCK AREA, SAN BERNARDINO COUNTY, CALIFORNIA ........ B1 iv FIGURES Page Figure 1. Index map of separate reports for the Southwestern San Bernardino County Mineral Land Classification Study . .. 2 Figure 2. Index map of U.S. Geological Survey 15-minute and 7.5-minute quadrangle maps .......................................... 3 Figure 3. Index of geologic maps used in the compilation of Plate 1: Geology of Part of Southwestern San Bernardino County: The Barstow".Newberry Springs Area, California . .. 5 Figure 4. General location map of the study area showing major geographic features .................................................. 7 Figure 5. California Mineral Land Classification Diagram: Diagrammatic relationship of mineral resource zone categories to the resource/reserve classification system. Adapted from U.S. Bureau of Mines/U.S. Geological Survey (1980) .................................................. 17 TABLES Table 1. Classes of mineral deposits (adapted from Bates, 1960) ........... 22 Table 2. Areas classified MRZ-2a and MRZ-2b, with commodity and square miles ................................................... 42 v PLATES Plate 1. Geology of a Part of Southwestern San Bernardino County: The Barstow­ Newberry Springs Area, California (scale 1:62,500). Plate 2. Mineral Land Classification Map of a Part-of Southwestern San - Bernardino County: The Barstow-Newberry Springs Area: Composite MRZ-2s showing all mines and prospects (scale 1 :62,500). Plate 3. Mineral Land Classification Map of a Part of Southwestern San Bernardino County: The Barstow-Newberry Springs Area:-Metallic mineral deposits formed by hydrothermal, contact metasomatic, and placer processes, and associated mines and prospects (stale 1:62,500). Plate 4. Mineral Land Classification Map of a Part of Southwestern San Bernardino County: The Barstow-Newberry Springs Area: Industrial minerals and associated mines and prospects (scale 1:62,500). Plate 5. Total intensity aeromagnetic map of the Camp Rock area showing anomaly designations, faults, and locations of detailed surveys and lines. Plate 6. Complete Bouguer gravity map of the Camp Rock area. Plate 7. Total intensity ground magnetic contour map of the Morris Lode area. vi EXECUTIVE SUMMARY The California Surface Mining and Reclamation Act of 1975 (SMARA) requires . the State Geologist to classify land into Mineral Resource Zones (MRZs), according to the known or inferred mineral potential of that land. The process is based solely on geology, without regard to existing land use or land ownership. The primary goal of mineral land classification is to ensure that the mineral resource potential of land is recognized by local government decision-makers and considered before land-use
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