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GeoRef Categories
Era and Period
Epoch and Age
Book Series
Date
Availability
Tyndall Group
Geology and Host-Rock Alteration of the Henty and Mount Julia Gold Deposits, Western Tasmania Available to Purchase
Geochemistry of the Cambrian volcanic-hosted massive sulfide-rich Mount Read Volcanics, Tasmania, and some tectonic implications Available to Purchase
New Mapping and Interpretations of the Mount Lyell Mining District, Tasmania: A Large Hybrid Cu-Au System with an Exhalative Pb-Zn Top Available to Purchase
Stratigraphic-volcanic setting of massive sulfide deposits in the Cambrian Mount Read Volcanics, Tasmania Available to Purchase
Henty; a shallow-water gold-rich volcanogenic massive sulfide deposit in western Tasmania Available to Purchase
High-Precision U-Pb Zircon Chronostratigraphy of the Mount Read Volcanic Belt in Western Tasmania, Australia: Implications for VHMS Deposit Formation Available to Purchase
POSSIBLE SUBMARINE ADVANCED ARGILLIC ALTERATION AT THE BASIN LAKE PROSPECT, WESTERN TASMANIA, AUSTRALIA Available to Purchase
Geochronology of the Mount Read Volcanics, Tasmania, Australia Available to Purchase
Simplified lithostratigraphic units of the MRV showing the approximate stra... Open Access
F ig . 4. Comparative diagrammatic cross sections of the Comstock and North... Available to Purchase
F ig . 14. Carbon and oxygen stable isotopes from carbonates associated wit... Available to Purchase
F ig . 15. Carbon and oxygen stable isotopes from carbonates associated wit... Available to Purchase
U–Pb zircon–rutile dating of the Llangynog Inlier, Wales: constraints on an Ediacaran shallow-marine fossil assemblage from East Avalonia Available to Purchase
The Discovery of the Argyle Pipe, Western Australia: The World’s First Lamproite-Hosted Diamond Mine Available to Purchase
Abstract Argyle diamond mine discovery is a tale of scientific exploration, belief, and persistence over a nine-year period from project formulation in 1971 to pipe discovery in 1979. Initial inspiration came from a suggestion that leucite lamproites that crop out in the Kimberley region of Western Australia were derived by differentiation from a kimberlite-like peridotite magma. A 200,000-km 2 -wide program of reconnaissance stream sampling was initiated in the north of Western Australia and discovered kimberlite indicator minerals and diamonds in three parts of the Kimberley basin and adjacent King Leopold and Halls Creek orogens. An innovative laboratory was constructed for indicator mineral recovery, and the use of chromite as an indicator was pioneered and proved a key mineral. Follow-up of indicator/diamond anomalies led to the world’s first recognition of olivine lamproites. The program led to the discovery of the smaller-scale Ellendale lamproite diamond deposit en route to finding the tier 1, high-grade Argyle pipe, the world’s first economic olivine lamproite-hosted diamond deposit, which has produced >750 million carats since 1983. Prior to these discoveries, traditional targets for diamond pipe exploration were areas of ancient cratonic basement. The Argyle and Ellendale deposits lie within the Halls Creek and King Leopold orogens, respectively, over thrust upon ancient cratonic lithosphere. The discoveries thus introduced a new target rock, olivine lamproite, for diamond exploration in nontraditional orogen environments.