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RB 86/00070 Andamooka Opalfields results of the 1984 prospecting scheme.
Published: 01 Sep 1986 Created: 07 Nov 2024 Revised: 07 Nov 2024
Author: Scott, D.C.;Flint, D.J.;Keeling, J.L.;Townsend, I.J.

Andamooka Opal Fields, have been major world producer of precious opal since 1933. Opal has formed within a weathered, bleached profile at the interface of white, sandy claystone (Kopi) and underlying, grey brown montmorillonitic clay (Mud) near...

Andamooka Opal Fields, have been major world producer of precious opal since 1933. Opal has formed within a weathered, bleached profile at the interface of white, sandy claystone (Kopi) and underlying, grey brown montmorillonitic clay (Mud) near the base of Cretaceous Marree Subgroup. Usually this interface, or Level, is marked by a pebble or conglomerate layer. Opal has formed in suitable crevices or has been trapped at permeability barriers. During June - October 1984, 81 shafts were sunk. Potch and / or coloured concrete encountered in 4 shafts north of Lunatic and Halfway Fields, warrants further investigation. Data from 71 holes, drilled independently, outside of present workings, have been recorded.

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About this record

Record No rb8600070
Topic Geoscientific Information
Type of Resource Document
Category Type
Document Type Departmental Publication - Geological Survey Geoscience Publication
Contributor
Sponsor
Tenement
Tenement Holder
Operator
Geological Province Eromanga Basin
Mine Name Andamooka Opal Field
Stratigraphy Bulldog Shale
Commodity gemstone
Notes 
Geographic Locality: Andamooka
Doc No: RB 86/00070
Geographic Locality: Andamooka
Doc No: RB 86/00070
Language English
Metadata Standard ISO 19115-3

Citations

Use constraints License
License Creative Commons Attribution 4.0
Persistent identifier https://pid.sarig.sa.gov.au/document/rb8600070
Citation Scott, D.C.;Flint, D.J.;Keeling, J.L.;Townsend, I.J. 1986. RB 86/00070 Andamooka Opalfields results of the 1984 prospecting scheme. Departmental Publication - Geological Survey Geoscience Publication. Government of South Australia.
https://pid.sarig.sa.gov.au/document/rb8600070

Technical information

Status
Maintenance and Update Frequency
Geographic Reference GDA2020 (EPSG:7844)
Geo bounding box {"type":"Polygon","coordinates":[[[137,-30.5],[137.5,-30.5],[137.5,-30],[137,-30],[137,-30.5]]]}
Purpose 

                    
                    

                    
                  		
                

              
                
                

                  
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