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Mining Books

Geology Ore Deposits Creede District Colorado Mining

$9.95

Geology Ore Deposits Creede District Colorado Mining

$9.95
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Geology and Ore Deposits of the Creede District, Colorado.

USGS Bulletin 718, 220 pages 1923

Chapter I. Introduction

  • Location and topography
  • Tield work and acknowledgments
  • History
  • Mining and treatment of ores
  • General conditions
    • Humphreys mill
    • Amethyst mill
    • Solomon mill
    • Ridge mill
  • Production
  • Bibliography
  • Chapter II. Outline of the geology
    • Age of the rocks
    • Potosi volcanic series
    • Alboroto group
    • Piedra group
    • Creede formation
    • Fisher quartz latite
    • Intrusive rocks
    • Quaternary deposits
    • Geologic structure
  • III. Rocks of the Alboroto group
    • General features
    • Outlet Tunnel quartz latite
    • General character and occurrence
    • Petrography
    • Weathering and outcrops
    • Willow Creek rhyolite
    • General character and distribution
    • Petrography
    • Chemical composition
    • Structure
    • Weathering and alteration
    • Topography and scenery
    • Oampbell Mountain rhyolite
    • General character and distribution
    • Contacts
    • Petrography
    • Weathering and outcrops
    • Distinction from other rhyolites
    • Phoenix Park quartz latite
    • General character and distribution
    • Petrography
    • Outcrops and weathering.
    • Equity quartz latite
    • General character and occurrence
    • Contacts
    • Petrography
    • Weathering and outcrops
  • Chapter IV. Rocks of the Piedra group
    • General features
    • Hornblende-quartz latite
    • General character and distribution
    • Thickness
    • Petrography
    • Weathering and outcrops
    • Windy Gulch rhyolite breccia
    • General character and distribution
    • Petrography
    • Weathering and outcrops
    • Comparison with Campbell Mountain rhyolite
    • Mammoth Mountain rhyolite
    • General character and distribution
    • Character of contacts and thickness
    • Petrography
    • Weathering and outcrops
    • Comparison with Campbell Mountain rhyolite
    • Rhyolite tuff
    • General character and distribution
    • Petrography
    • Tridymite latite
    • General character and occurrence
    • Thickness
    • Petrography
    • Tridymite, quartz, and cristobalite in volcanic rocks
    • Chemical composition
    • Flow near mouth of Deerhorn Creek
    • Outcrops, weathering, and alteration
    • Andesite
    • General character and distribution.
    • Petrography
    • Alteration and topography
    • Quartz latite tuff
    • General character and occurrence
    • Thickness
    • Petrography
    • Massive rock in the tuff
    • Weathering and outcrops
    • Rat Creek quartz latite
    • General character and distribution
    • Thickness
    • Petrography
    • Weathering, outcrops, and topography
    • Nelson Mountain quartz latite
    • General character and distribution
    • Thickness
    • Petrography
    • Weathering and outcrops
  • Chapter V. Creede formation
    • Name, general character, and occurrence
    • Structure and thickness
    • Subdivisions
    • Lower member
    • General character
    • Petrography
    • Interbedded travertine
    • Character and distribution.
    • Origin
    • Upper member
    • General character and distribution
    • Petrography
    • Massive rocks
    • Weathering and topography
    • Origin
    • Position in the section
    • Age
  • Chapter VI. Fisher quartz latite
    • General relations
    • General character and distribution
    • Thickness
    • Petrography
    • Weathering and outcrops
  • Chapter VII. Intrusive rocks
    • Types
    • Rhyolite porphyry
    • General character and distribution
    • Relation to adjoining rocks
    • Petrography
    • Quartz latite porphyry
    • Occurrence
    • Age
    • Petrography
    • Intrusive basalt
    • Occurrence
    • Petrography
    • Hornblende-quartz latite porphyry
  • Chapter VIII. Quaternary deposits
    • Significance
    • Moraines
    • Distribution
    • Glacial topography
    • Two stages of glaciation
    • Earlier moraines
    • Later moraines
    • Character of material
    • Postglacial erosion
    • Economic considerations
    • Terrace gravels
    • Landslides
    • General features
    • Distribution
    • Economic considerations
    • Talus
    • Alluvial fans
    • Alluvium
  • Chapter IX. Structure
    • Faulting
    • Difficulties in detecting faults
    • General character of faulting
    • Age
    • Mineralization along faults
    • Amethyst fault system
    • Equity fault
    • Fault block of Mammoth Mountain
    • Bulldog Mountain fault
    • Solomou-Ridge fault
    • Alpha fault
    • Structure northeast of Sunnyside
    • Minor faults
  • Chapter X. Ore deposits
    • General character
    • Minerals of the deposits
    • Quartz
    • Barite
    • Thuringite
    • Adularia
    • Rhodochrosite
    • Fluorite
    • Galena
    • Pyrite
    • Sphalerite
    • Chalcopyrite
    • Gold
    • Native silver
    • Argentite
    • Stephanite
    • Marcasite
    • Anglesite
    • Cerusite
    • Limonite
    • Jarosite
    • Calcite
    • Siderite
    • Malachite
    • Chryaocolla
    • Kaolin
    • Cerargyrite
    • Chrysoprase
    • Chalcedony
    • Wad
    • Goelarite
    • Gypsum.
    • Chalcanthite
    • Melanterite
    • Smithsonite
    • Pyromorphite
    • Hematite
  • The fractures
  • General character
  • Nature of fault movements
  • Character of the ores
  • Composition and metals contained
  • Structure and paragenesis of the primary ores
  • Hydrothermal metamorphiam
  • Character of solutions that deposited the primary ores
  • Age and genesis of the deposits
  • Superficial alteration of ores
  • Downward enrichment
  • General character
  • Fractured condition of the lodes
  • Mine waters
  • Composition of altered ores
  • Secondary precipitation of silver and gold
  • Extent of Amethyst vein before erosion
  • Gases in Amethyst lode
  • Exploration of district
  • Extensions on strike of developed deposits
  • Fractures and veins in walls of developed deposits
  • Extensions in depth
  • Prospecting for new lodes
  • Chapter XI. Mines
    • Bachelor mine
    • Copper lode
    • Commodore mine
    • Last Chance, New York, and Del Monte mines
    • Amethyst mine
    • Happy Thought mine
    • White Star mine
    • Park Regent mine
    • Captive Inca mine
    • Dolgooth claim
    • Equity mine
    • Exchequer tunnel
    • Jo Jo tunnel
    • Mammoth mine
    • Oxide claims
    • Pipe Dream claim
    • Mustang vein
    • Overholtlode
    • Rio Grande No.2 lode
    • Jack Pot lode
    • Solomon and Holy Moses mines
    • Ridge mine
    • Phoenix mine
    • Outlet tunnel and Ada group of claims
    • Carbonate vein
    • Mollie S. mine
    • Eunice mine
    • Dora Belle tunnels
    • Homestake claim
    • Mammoth tunnel
    • Barney tunnel
    • Monte Carlo mine
    • Conejos No. 2 chum
    • Cleaveland tunnel
    • Tahrahathea claim
    • Bulldog, Kansas City Star, and North Star claims
    • Bethel claim
    • Little Gold Dust claim
    • Alpha and Corsair mines
    • Reno prospect
    • Kreutzer Sonata mine
    • Diamond King claim and Paris tunnel
    • Monon mine
    • Sunnyside tunnel
    • Delaware claim
  • Index

*This document was archived in PDF Format and is the property of Sylvanite, Inc. reproduction and resale is prohibited without written permission. Upon purchase you will receive an email containing a link to download your item.

 




 


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