...David C. Peck; Reid R. Keays Abstract Three distinctive chromitite occurrences are recognized from the Cambrian mafic-ultramafic Heazlewood River Complex, Tasmania. Type I chromitite represents very thin schlieren comprising Cr-rich spinel and is hosted by primitive, olivine-rich cumulates. Type II...

... that the Devonian granites in the south are thicker than previously thought, possibly connecting to deep sources of mineralization. In addition, we identified gravity anomalies to the northeast that could be caused by near-surface granite cupolas. A newly discovered ultramafic complex linking the Heazlewood...

... and the Heazlewood River Ultramafic Complex are also nonstoichiometric, having significant Fe 8/3 O 4 Cr 8/3 O 4 components. Our results demonstrate that nonstoichiometry is a common feature of Cr-rich spinel. This has important implications for the use of Fe 3+ and Fe 2+ concentrations to estimate the oxidation...

... serpentinized peridotites (dunites and harzburgites) belong to the 516 ± 0.9 Ma ( Mortensen et al. 2015 ) McIvor Hill mafic-ultramafic complex ( Fig. 1 ). This and 15 neighboring ultramafic bodies, including the well-studied Heazlewood River complex ( Peck 1990 ), were emplaced into or obducted onto...

...., the Heazlewood River Complex; Peck et al. 1992 ). In this paper, we present the results of phase equilibrium and partitioning experiments to support the notion that such IPGE–PPGE decoupling can arise by early precipitation of IPGE-bearing accessory minerals at the magmatic stage. Various hypotheses...

... Determinations for Rocks of the Central Mount Read Volcanics and Its Extensions to the North and South Sample Stratigraphic unit 1 Age (Ma) Error 2 Method Source Mafic-Ultramafic Complexes Heazlewood tonalite MUC 513.6 10 U-Pb SHRIMP-zircon 3 Central Mount Read Volcanics...

..., geophysically, and petrophysically constrained 3D modeling across the minerally prospective area of the Heazlewood-Luina-Waratah region, northwest Tasmania, Australia. The study presents an example of the value of geologic and petrophysical constraints to assist an advanced 3D geophysical modeling project...

... interval: 8, tonalite from the Heazlewood Ultramafic Complex ( Black et al . 1997 ); 9, Cobb Igneous Complex ( Münker & Cooper 1999 ); 10, Cressy Schist ( Van Schmus et al . 1997 ); 11, Rathjen Gneiss ( Foden et al . 1999 ); 12, Tanunda Creek Gneiss ( Foden et al . 2004 ); 13, undeformed biotite...

... (Heazlewood and Whyte River Complexes), which have been serpentinized to varying degrees. These bodies have been interpreted as being dismembered ophiolites which were thrust into sediments of the Dundas trough ( Williams, 1978 ). F ig . 1. Location of the Cleveland tin deposit, Tasmania, Australia...

... ). Insights into the behaviour of precious metals in primitive, S-undersaturated magmas: evidence from the Heazlewood River Complex, Tasmania . Canadian Mineralogist , 28 , 553 – 577 . Peltonen , P. ( 2003 ). Platinum-group element geochemistry of eastern Finland kimberlites and their mantle...

... of platinum-group element deposits in igneous rocks . Econ. Geol . 91 , 439 – 450 . Peck , D.C. & Keays , R.R. ( 1990 ): Geology, geochemistry and origin of platinum-group element – chromitite occurrences in the Heazlewood River Complex, Tasmania . Econ. Geol . 85 , 765 – 793...

... in the Heazlewood River Complex, Tasmania . Econ. Geol . 85 , 765 – 793 . Pownceby , M.I. & O’Neill , H. St.C. ( 1994 ): Thermodynamic data from redox reactions at high temperatures. III. Activity–composition relations in Ni–Pd alloys from EMF measurements at 850–1250 K, and calibration...

... of precious metals in primitive, S-undersaturated magmas: Evidence from the Heazlewood River Complex, Tasmania : Canadian Mineralogist , v. 28 , p. 553 – 577 . Peck , D.C. , Keays , R.R. , and Ford , R.J. , 1992 , Direct crystallization of refractory platinum-group element alloys from...

... in primitive, S-undersaturated magmas—evidence from the Heazlewood River Complex, Tasmania . Canadian Mineralogist , 28 , 553 – 577 . Peck D.C. Keays R.R. Ford R.J. ( 1992 ) Direct crystallization of refractory platinum-group element alloys from boninitic magmas—evidence from western...

... into the behaviour of precious metals in primitive, S-undersaturated magmas; evidence from the Heazlewood River complex, Tasmania . Can. Mineral . 28 , 553 – 557 . Peregoedova , A. , Barnes , S.-J. & Baker , D.R. ( 2004 ): The formation of Pt–Ir alloys and Cu–Pd–rich sulfide melts...

...-resolution ion microprobe) U-Pb zircon analyses from late-stage tonalite within the Heazlewood River complex that give a 206 Pb/ 238 U age of 515 ± 7 Ma ( Turner et al., 1998 ) (age referenced to standard SL13 corrected by 1% to be consistent with the updated calibration of SHRIMP dating standards by Black...

... – 357 . Peck , D.C. & Keays , R.R. ( 1990 ): Insights into the behavior of precious metals in primitive, S-undersaturated magmas; evidence from the Heazlewood River Complex, Tasmania . Can. Mineral . 28 , 553 – 577 . Peck , D.C. & Keays , R.R. & Ford...

... into the behaviour of precious metals in primitive, S-undersaturated magmas: evidence from the Heazlewood River Complex, Tasmania . Canadian Mineralogist , 28 : 553 – 577 . Penniston-Dorland , S.C. , Wing , B.A. , Nex , P.A.M. , Kinnaird , J.A. , Farquhar , J. , Brown , M. , et al...