 | | 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 • |  | | 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...· · · · · · · · · · · The Dufek Intrusion of Antarctica and a survey of its minor metals and possible |  | | Journal (article/letter/editorial) | | hydrothermal environment, Barton Peninsula, King George Island, Antarctica, 429 A c t i v e g e o t h...greenschist-amphibolite facies metamorphic rocks from the western Tauern Window (Eastern Alps), 641 A1,Si order,...of hydrogen feldspar, 15 Amphibolites, from the western Tauern Window (Eastern Alps), and P-T deformation...from island arc basalts, i; high-temperature structural study of polymorphs of, 25 ANTARCTICA, stable...sulphate-type epithermal system on Barton Peninsula, King George Island, 429 Antimony, -rich titanite in |  | | 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, Re–Os 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 Fe–Ni–Cu sulphides are the most common syngenetic |  | | Journal (article/letter/editorial) | | Magmatic-Hydrothermal Activity in the Shuteen Area, South Mongolia* Bayaraa Batkhishig,1,† 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...107°34'–107°48'E) is located about 450 km south-southeast of Ulaanbaatar in South Mongolia. The area contains the...MAGMATIC-HYDROTHERMAL ACTIVITY IN THE SHUTEEN AREA, SOUTH MONGOLIA 107o 34’30’’ 44o 00’30’’ 107o 48’00’’ |  | | Journal (article/letter/editorial) | | alteration and geochemistry of alunite in the western Izu Peninsula, Shizuoka Prefecture 安藤 康行 (Yasuyuki ANDO)*...(Sadao TSUTSUMI)* Acid alteration in the western Izu Peninsula, Shizuoka Prefecture, is distributed widely...characterized by an assemblage of pyrophyllite, diaspore and alunite. The alunite has cores rich in Sr...fluid. Keywords: Acid alteration, Alunite, Izu Peninsula I. は じ め に 伊豆半島の西部，達磨山〜長九郎山にかけての一帯に は，鮮新世〜更新世の火成活動に伴う酸性変質帯が断続的... 康行・堤 貞夫 Fig. 1. Geologic map of the western Izu Peninsula showing geographical distribution of the |
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