Geology and Ore Deposits of the Wood River

Region, Idaho with a description of the Minnie

Moore and Near-by Mines

by Joseph Umpleby, Lewis Westgate, Clyde P Ross

USGS Bulletin 814

1930, 311 Pages

• Summary
• Introduction
• • Outline of the work
  • Scope of the report
  • Acknowledgments
  • Earlier work
• PART 1. General geology, by Lewis G. Westgate and Clyde P. Ross
• • Introduction
  • • Topography
    • Climate
    • Vegetation
    • Population and industries
  • Sedimentary rocks
  • • Algonkian (?) rocks
    • • Hyndman formation
      • • Distribution and subdivisions
        • Lower quartzite member
        • Schist member
        • Middle quartzite member
        • Green hornfels member
        • Upper quartzite member
      • East Fork formation
      • • Distribution and subdivisions
        • Lower limestone member
        • Quartzite member
        • Upper limestone member
      • Age of the Hyndman and East Fork formations
    • Ordovician rocks
    • • Early Lower Ordovician rocks
      • Phi Kappa formation
      • • General features
        • Fossils and age
    • Silurian rocks
    • • Trail Creek formation
      • • General features
        • Fossils and age
    • Devonian (?) and Carboniferous rocks
    • • Miliigen formation (Devonian? and Mississippian)
      • • Distribution and thickness
        • Lithologie character
        • Age
      • Wood River formation (Pennsylvanian)
      • • Distribution and thickness
        • Lithologie character
        • Fossils and age
    • Tertiary rocks
    • Quaternary deposits
    • • Glacial deposits
      • • Earlier (?) moraines
        • Deposits of the principal or Wisconsin glacial stage
      • Later alluvium
    • Metamorphism in the sedimentary rocks
  • Igneous rocks
  • • Plutonic rocks
    • • General features
      • Granodiorite and related rocks on upper Wildhorse Creek
      • • Massive granodiorite
        • Border faciès of the granodiorite
        • Biotite gneiss
      • Quartz monzonite on Big Lost River
      • Quartz monzonite on Deer Creek
      • Soda granite on Warm Springs Creek
      • Soda granite near Kelly Creek
      • Smaller areas of granitic rocks
      • Dikes associated with the granitic rocks
      • Age of the plutonic rocks
    • Volcanic rocks
    • • Miocene (?) lava
      • • Distribution and general relations
        • Augite andésite and basalt
        • Latite and hornblende andésite
        • Rhyolite
      • Miocene (?) intrusive rocks
      • • Distribution and general relations
        • Quartz diorite porphyry
        • Granite porphyry
        • Finer-grained dike rocks
      • Quaternary basalt
      • Age of the volcanic rocks
  • Structure
  • • General features
    • Horizon markers
    • Folds
    • Faults
    • • Overthrust faults
      • Normal faults
      • Possible relation of faults to drainage system
  • Geologic history
  • • Proterozoic (?) era
    • Paleozoic era
    • Mesozoic era
    • Cenozoic era
• PART 2. Economic geology, by Joseph B. Umpleby and Clyde P. Ross..
• • Historical sketch
  • Production
  • Treatment of the ore
  • Geographic and geologic distribution
  • General character of the deposits
• Mineralogy
• Lode deposits
• • Structural features
  • The ore
  • Ore shoots
  • Comparison with deposits in other regions
• Contact-metamorphic deposits
• • General character and distribution
  • Deposits east of Ketchum
  • Deposits near Big Lost River
  • Deposits near the head of East Fork of Big Wood River
  • Comparison with deposits in other regions
• Veins containing nonmetallic minerals
• Coal
• Miocene (?) mineralization
• Hot springs
• Oxidation and enrichment
• Age and genesis of the ore deposits
• Detailed description of mines
• • Jennie R. prospect
  • Utah-Bellevue mine
  • Penobscot group
  • Overland mine
  • Monday mine
  • Croesus mine
  • Other mines in Scorpion Gulch
  • Climax mine
  • Rowley prospect
  • Mines on the Mayflower lode
  • Red Elephant mine
  • New York-Idaho Exploration Co. property
  • Arizona group
  • Red Cloud mine
  • Pass group
  • Ajax mine
  • Big Mint group
  • Bonnie and Barium Sulphate groups
  • • Nay-Aug mine
  • War Dance and Jolly Sailor mines
  • Narrow Gauge mine
  • Le Despencer mine
  • Other prospects near Deer Creek
  • Imperial group
  • Democrat mine
  • Le Grande group
  • Wolftone mine
  • Prospects on Kelly Mountain
  • Independence mine
  • Baltimore mine
  • North Star mine
  • Triumph mine
  • Duquette prospect
  • Homestake prospect
  • Broadway mine
  • Parker mine
  • Quaker City mine
  • Bald Eagle prospect
  • Starlight mine
  • Elkhorn mine
  • Evelyn prospect
  • Homestake mine
  • Zinc prospects on Lake Creek
  • Mines on West Fork of Warm Springs Creek
  • New Hope mine
  • Mascot mine
  • Blue Bell prospect
  • Phi Kappa mine
  • Basin group
  • Black Rock prospect
  • Prospects on Little Falls Creek
  • Alta group
  • Wildhorse Canyon prospects
• PAKT 3. Geology of the Minnie Moore and near-by mines, Mineral Hill mining district, Blaine County, Idaho, by D. F. Hewett 209
• • Scope of work
  • Geology
  • • Sedimentary rocks
    • • Milligen formation
      • Wood River formation
    • Igneous rocks
    • • Diorite
      • Granite
      • Dikes
      • Surface flows
      • Contact metamorphism
    • Structure
    • Succession of geologic events
  • Description of mines
  • • Minnie Moore mine
    • • History
      • Production
      • Accessible workings
      • The ore deposit
      • • General features
        • Sedimentary rocks
        • Intrusive rocks
        • Structure of the beds
        • Minnie Moore vein
        • Mineralogy
        • Paragenesis of the minerals
        • Contact vein
        • Singleterry vein
        • Gray coppervein
        • Faults
    • Queen of the Hills mine
    • Golden Bell mine
    • Bellevue King mine
    • Queen Bess mine
    • Lark mine
    • Summary of the local ore deposits
• Index -

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