» The Alluvial Gold Report Qld
  § Summary
  § Introduction
  § History of alluvial gold mining
  § Geological aspects of Queensland's placer gold
  § Recent deposition of placer gold
  § Cape York Peninsula region
  § Georgetown region
  § Mount Isa Cloncurry region
  § Central Queensland region
  § Southern Queensland region
  § Deep lead gold deposits
  § Clermont region
  § Ukalunda area
  § Wenlock area
  § Palmer region
  § Russell River area
  § Charters Towers region
  § Rockhampton region
  § Cloncurry region
  § Alluvial gold production
  § Alluvial mining techniques
  § Sluicing (wet processing)
  § Dry blowing (air processing)
  § Discussion
  § Conclusions
  § Acknowledgments
  § References

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Gold, Mount Isa Cloncurry region

Alluvial gold in this region was mainly mined along the Cloncurry River at Top Camp, 44km south of Cloncuny and to a lesser extent in other parts of the region. Early descriptions of the Top Camp diggings by Rands (1895) and Shepherd (1931) reported that the gold was nearly all associated with bismuth and that the quantity obtained was impossible to estimate. Most of the gold then was extracted by dry blowing, a technique that was recently used by Resource Trend Pty Ltd on large scale in the area.

At Mount Quamby, north of Cloncurry, alluvial gold has been obtained in gullies draining the auriferous Late Proterozoic Quamby Conglomerate. At about 110km south of Cloncurry, the Crackenback alluvial gold occurrence was discovered in 1985 by CSR Ltd. The gold occurs predominantly as porous crystalline aggregates in red ferruginous soils, flanking a breccia zone over a strike length of 4 km.

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July 1996, Queensland Government Mining Journal

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