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Deposit Synonyms
CROCKER CAMP SOUTH; CROCKER WELL; RL 126
Mineral District
CROCKERS WELL - MOUNT VICTORIA
Deposit Summary
brannerite mineralisation interstitially in phlogopite-rich breccia matrix and disseminated along fractures in alaskite and trondhjemite, associated with quartz- phlogopite and rutile.
Deposit Description
CROCKER ORIGINAL, deposit of thorian brannerite mineralisation concentrated in a lenticular zone of brecciated and fractured leucocratic quartz syenite. Mineralisation occurred over ~4600m2. Brannerite was disseminated in a phlogopite-rich matrix of breccia of alaskite/trondhjemite and metasediment. Whittle in 1952 identified the rare mineral absite, a hydrated uranium oxide. Resource figure of 18.84Mt for 11.66 million lbs U3O8 relates to the project area >4km2, and includes several named prospects, with the naming of them adopted in mindep after that listed by Pepinnini Minerals Ltd in Envelope 11089, Figures 20, 21, Appendix 9, 2005.
Mineralisation thought to be related to orogenic event with accompanying complex deformation, metamorphism, and widespread granite intrusion (Olarian orogeny), with age dating (1984, Ludwig & Cooper), indicating magmatic event at 1580Ma for the Crocker Well district.
Discovery Year
~ 1953
Commodities
Uranium, Uranium Oxide, Thorium
Ore Minerals
Brannerite
Gangue Minerals
Apatite, Biotite, Phlogopite, Plagioclase, Rutile
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