 | | Journal (article/letter/editorial) | | environment, Barton Peninsula, King George Island, Antarctica DEBBIE C. ARMSTRONG* British Antarctic Survey...Volcanic-hosted advanced argillie alteration on Barton Peninsula comprises an assemblage of chalcedonic silica...F)IsC1,are reported at this locality, and in Antarctica, for the first time. The WNWstriking, 1 km-long...alteration, acid sulphate-type epithermal system, Antarctica. Introduction VOLCANIC- and plutonic-related...protoPacific and Pacific oceanic lithosphere beneath the Antarctic plate for most of the Mesozoic and Cenozoic (Thomson |  | | Journal (article/letter/editorial) | | prep.), but The "quartz-pyrite"rocks of the South Shetland their broad distributionis shownin Figure 1...surroundingJurassic(?) lavasis (Ferguson, 1921; Haxvkes, 1961; Barton, 1964) intimately associatedwith the genesisof...mineralizedbrec- posits. cia in pre-Tertiary faults (Barton, 1963). During the 1975-76 summer seasonthese occurMineralogy...most of the pyrite-bearing rocks of the South Shetland Islands are not of this type. Rather than veins...the quartz-pyrite rocks on George Island. Inset shows the positionof the South ShetlandIslands. Km ā¢ |  | | Report (issue) | | CIRCULAR 909 Petroleum and Mineral Resources of Antarctica Work done in cooperation with the National Science...Foundation Petroleum and Mineral Resources of Antarctica By John C. Behrendt, Editor GEOLOGICAL SURVEY...Branch of Distribution, U.S. Geological Survey, 604 South Pickett Street, Alexandria, VA 22304 CONTENTS...resources in Antarctica?, by John C. Behrendt . . . . . . Mineral occurrences of Antarctica, by Peter D...Ā· Ā· Ā· Ā· Ā· Ā· Ā· Ā· Ā· Ā· Ā· The Dufek Intrusion of Antarctica and a survey of its minor metals and possible |  | | Journal (article/letter/editorial) | | coworkers18) and the diamonds from Premier mine in South Africa, which are particularly beautiful, have an...P-type diamonds from De Beers Pool mines, Kimberley, South Africa.13 More recently, as part of a programme...more fully the evolution of the Kaapvaal craton in South Africa, ReāOs systematics on single E-type sulphide...Kimberley (in the middle) and Koffiefontein (in the south), have shown two distinct ages of E-type diamond...Centre, De Beers Consolidated Mines, Southdale, South Africa FeāNiāCu sulphides are the most common syngenetic |  | | Journal (article/letter/editorial) | | Magmatic-Hydrothermal Activity in the Shuteen Area, South Mongolia* Bayaraa Batkhishig,1,ā Tsuchiya Noriyoshi...area is located in the Gurvansaikhan island arc terrane of South Mongolia. It contains a large domain...or beneath the Shuteen lithocap. Introduction South Mongolia hosts a number of Paleozoic porphyry copper...107Ā°34'ā107Ā°48'E) is located about 450 km south-southeast of Ulaanbaatar in South Mongolia. The area contains the...porphyritic intrusions. Gold-bearing quartz and quartz-tourmaline veins and domains of intense alunite alteration |  | | Journal (article/letter/editorial) | | major fault. Jarosite+ barite+ sericite+ pyrite+ tourmaline+ quartz7plagioclase 7feldspar. No evidence of...composed of jarosite+barite + alunite7iron oxide7 tourmaline. This alteration is characterized by abundant...also occur as veinlets cutting the altered rock. Tourmaline is present only in microscopic scale mostly as...(250ā350 1C) advanced argillic minerals, e.g., tourmaline with low temperature advanced argillic minerals...mineralogical records, i.e. Bāmetasomatism and tourmaline formation, this process only could be favoured |
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