Gossans and Leached Cappings

Field Assessment

  • Roger Taylor

Table of contents

  1. Front Matter
    Pages i-xviii
  2. Roger Taylor
    Pages 1-1
  3. Roger Taylor
    Pages 3-8
  4. Roger Taylor
    Pages 9-20
  5. Roger Taylor
    Pages 21-27
  6. Roger Taylor
    Pages 29-31
  7. Roger Taylor
    Pages 33-76
  8. Roger Taylor
    Pages 77-106
  9. Roger Taylor
    Pages 107-138
  10. Roger Taylor
    Pages 139-140
  11. Back Matter
    Pages 141-146

About this book


This text concentrates upon field observations concerning leached cappings and gossans, occurring as oxidised surface expressions of underlying ore zones.

Although the advent of modern multielement geochemical sampling and easier mechanical excavation assist considerably in subsurface interpretation, there are still many occasions where the first observation and recognition are made by the lone field geologist. New exposures continue to be found in remote and often difficult terrains, where “on the spot” skills are of prime importance.

In general terms the text has been arranged from the broad scale to the specific, and it should be realised that all scales provide valuable input for final interpretation. The topics covered include:

• Theoretical perspectives

• Initial recognition

• General field observations

• Detailed field observations (secondary minerals, boxworks)

• Porphyry copper leached cappings


Gossans exploration-field technique leached cappings leached outcrops porphyry copper

Authors and affiliations

  • Roger Taylor
    • 1
  1. 1.School of Earth SciencesJames Cook UniversityTownsvilleAustralia

Bibliographic information