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Lady Loretta Deposit

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Journal Article
Journal: Economic Geology
Published: 01 December 1998
Economic Geology (1998) 93 (8): 1295–1306.
...Mark L. Duffett Abstract Semi-regional gravity, magnetic and radiometric data sets, augmented by a prospect-scale gravity survey, have been used to qualitatively assess the geological setting of the Lady Loretta Pb-Zn-Ag deposit. Regional gravity and magnetic fields are influenced chiefly...
Image
F ig . 2. Chronostratigraphic framework of the Western fold belt, Mount Isa...
Published: 01 March 2004
at Hilton, (3) Paradise Creek Formation (underlies host rocks to the Lady Loretta deposit), and (4) Upper McNamara Group of the Lawn Hill Formation (host rocks to the Century deposit).
Journal Article
Journal: Economic Geology
Published: 01 November 2001
Economic Geology (2001) 96 (7): 1567–1593.
... are similar to those recorded in the Red Sea brine pool associated with the Atlantis II metalliferous sediment deposit. Based on our work at HYC and Lady Loretta, strata-bound 18 O-enriched carbonate lithogeochemical halos may be a characteristic of the Proterozoic stratiform Zn-Pb-Ag deposits of northern...
FIGURES | View All (24)
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F ig . 22. Comparison of C-O isotope data from the <span class="search-highlight">Lady</span> <span class="search-highlight">Loretta</span> halo with t...
Published: 01 November 2001
at Lady Loretta and HYC probably relates to the different sedimentary environments for each deposit—shallow lacustrine at Lady Loretta ( Dunster,1998 ) and deeper marine at HYC ( Bull, 1998 ).
Published: 01 January 2005
DOI: 10.5382/AV100.28
EISBN: 9781934969519
... to these processes varies from deposit to deposit. However metamorphic overprints in some deposits (e.g., Mt. Isa, Hilton, Dugald River, Lady Loretta) have lead to recrystallization of sulfide minerals, making it difficult to interpret primary paragenetic relationships and absolute timing of mineralization. Mount...
Image
The Western fold belt of the Mount Isa basin, northern Australia, showing t...
Published: 01 September 2006
F ig . 1. The Western fold belt of the Mount Isa basin, northern Australia, showing the Leichhardt River fault trough and the Lawn Hill platform plus the location of the Mount Isa, Hilton, Lady Loretta, George Fisher, Walford Creek, and Century Zn-Pb-Ag (±Cu) deposits.
Image
(A) A map showing the bedrock geology of the Leichhardt River fault trough ...
Published: 01 August 2020
the generalized superbasin stratigraphy for the Mt. Isa inlier (after Southgate et al., 2000 ; Gibson et al., 2016 ). Also shown are approximate stratigraphic locations of George Fisher (GF), Mt. Isa (MI), Lady Loretta (LL), HYC/McArthur River (HYC), and Century (CE) Zn-Pb-Ag deposits (asterisks). In the Mt
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F ig . 7. Chronostratigraphy across the Curnamona province between 1720 and...
Published: 01 June 2005
deposits ( McGoldrick et al., 1998) such as Isa-Hilton (1650–1655 Ma), Lady Loretta (1647 ± 4 Ma), Walford (1640 ± 7 Ma), and McArthur River (1640 ± 3 Ma).
Journal Article
Journal: Economic Geology
Published: 01 January 2000
Economic Geology (2000) 95 (1): 1–18.
... to sedex ore formation, as discussed above. Barite is a common component of Selwyn-type deposits but is absent from all of the McArthur-type deposits except Lady Loretta. Barium may form aqueous chloride, carbonate and hydroxide complexes in hydrothermal solutions. Under the conditions of interest...
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Journal Article
Published: 01 March 2005
South African Journal of Geology (2005) 108 (1): 119–134.
... 50 109 Nd 18 38 18 19 14 23 46 By comparison, Zn and Pb display considerably wider dispersion at the Lady Loretta and HYC deposits. At Lady Loretta, anomalous Zn values extend up to 150 m into the footwall and 80m into the hanging wall ( Large and McGoldrick, 1998 ). At HYC, Zn...
FIGURES | View All (16)
Journal Article
Journal: Economic Geology
Published: 01 September 2006
Economic Geology (2006) 101 (6): 1231–1250.
... and δ 18 O values from −6.5 to −2.9 and 15.6 to 22.2 per mil, respectively (Table 3 , Fig. 15 ). The ore trend of 18 O enrichment in siderite is similar to the trends for ore and alteration carbonates at the Lady Loretta and HYC deposits ( Large and McGoldrick, 1998 ; Large et al., 2001...
FIGURES | View All (18)
Journal Article
Published: 21 March 2017
Journal of the Geological Society (2017) 174 (4): 773–786.
... deposit as well as several other world class ore bodies (Hilton–George Fisher, Lady Loretta) and is separated from the underlying rift-related rocks by the Gun Unconformity ( Southgate et al. 2000 a ). Based on published seismic images ( Gibson et al. 2016 ), total cumulative basin thickness...
FIGURES | View All (7)
Journal Article
Journal: Economic Geology
Published: 01 June 2019
Economic Geology (2019) 114 (4): 771–786.
..., and these are the elements emphasized here. When analyses were below detection limits, either half the detection limit was used or the value was inserted from the referred literature source. Because Gadd et al. (2016) did not report Te or Au, we used average values for these elements from the Lady Loretta SEDEX deposit...
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Journal Article
Journal: Economic Geology
Published: 01 May 2005
Economic Geology (2005) 100 (3): 597–598.
... of the mineralization because, during the past 30 years, different workers have proposed ages of mineralization ranging from synsedimentary (e.g., HYC), but tending to early diagenesis for some, through the various phases of diagenesis (e.g., Lady Loretta and Century), and to syntectonic (Mount Isa). Clearly the SEDEX...
Journal Article
Journal: Economic Geology
Published: 01 May 2003
Economic Geology (2003) 98 (3): 557–576.
... ). The North Australian craton contains five large and several subeconomic shale-hosted massive sulfide Pb-Zn-Ag deposits, including Mount Isa, HYC, Century, Hilton, George Fisher, Lady Loretta, and Walford Creek ( Fig. 1 and Table 1 ). The deposits typically have bedded ore facies with repetitions...
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Journal Article
Journal: Economic Geology
Published: 01 September 2006
Economic Geology (2006) 101 (6): 1159–1188.
..., then these stratigraphic intervals also may have been the metal-bearing source rocks for the Mount Isa, Hilton, George Fischer, and Lady Loretta deposits. In this model, formation of diagenetic aquifers and metal leaching in clastic-volcanic filled basins occurs at burial depths between 5 and up to 10 km (Fig. 14...
FIGURES | View All (14)
Journal Article
Journal: Economic Geology
Published: 01 June 2005
Economic Geology (2005) 100 (4): 663–676.
... deposits ( McGoldrick et al., 1998) such as Isa-Hilton (1650–1655 Ma), Lady Loretta (1647 ± 4 Ma), Walford (1640 ± 7 Ma), and McArthur River (1640 ± 3 Ma). ...
FIGURES | View All (7)
Journal Article
Journal: Economic Geology
Published: 01 December 2021
Economic Geology (2021) 116 (8): 1743–1768.
...) and Riversleigh Siltstone (1644 ± 8 Ma; Page et al., 2000 ). The Lady Loretta Zn-Pb-Ag deposit, hosted by the Lady Loretta Formation (1647 ± 4 Ma; Page et al., 2000 ) in the Mt. Isa Basin, is a few million years older, but also occurs in a similar structural setting. Each of these CD-type deposits is broadly...
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Journal Article
Published: 01 February 2009
The Canadian Mineralogist (2009) 47 (1): 129–141.
.... Patterson (1985) reported that cadmium is found in traces in sphalerite coexisting with greenockite and is not detected at all in galena in the Lady Loretta mineralization in northwestern Queensland. He suggested that there has been significant decoupling of the geochemical coherence of cadmium and zinc...
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Journal Article
Journal: Economic Geology
Published: 01 August 2001
Economic Geology (2001) 96 (5): 1055–1072.
... to the regionally extensive Tl halos defined for Australian Proterozoic sediment-hosted (SEDEX) Zn-Pb-Ag deposits, such as HYC ( Smith, 1973 ; Large et al., 2000 ) and Lady Loretta ( Large and McGoldrick, 1998 ). A study of the variation in white mica, carbonate, and chlorite chemistry in two drill holes...
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