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A Summary of Major Mineral Resources, Mines and Projects, 2nd Edition |
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Major Mining Related Events |
UNDERGROUND MINING METHODS
SHAFTS
STOPES
OPEN CUT MINING
Opencut workings (called Black Star) restarted in February 2005.
ML
8058
MOUNT ISA MINES LIMITED
100.00%
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Host Rock/Cover Sequences |
LEICHHARDT RIVER SUBPROVINCE
Urquhart Shale / PALAEOPROTEROZOIC to PALAEOPROTEROZOIC
GENERAL ORE BODY MODEL
SEDIMENT-HOSTED DEPOSIT
DETAILED ORE BODY MODEL
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SEDIMENT-HOSTED PB-ZN (SED.EX. ZN-PB, |
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SHALE-HOSTED ZN-PB) |
ORE
Mineralisation dated at 1652 +/- 7Ma.
PALAEOPROTEROZOIC
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Tabular, bedding-parallel Ag-Pb-Zn orebodies occur in close proximity to but geologically distinct from the breccia-hosted massive to |
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disseminated copper mineralisation. |
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The mineralisation occurs within fine to coarse (1mm to 1m) bedding-parallel sulphide- rich bands within shales and siltstones of the |
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Urquhart Shale. |
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The sulphide bands constitute an orebody where they are grouped together in sufficient concentrations to meet criteria for an economic |
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orebody. |
Post 1987 production includes that from the Hilton Mine to the north.