 | | Journal (article/letter/editorial) | | and titanate minerals in the West Kimberley lamproites, Western Australia A. L. Jaques 1 Received: 9...Miocene olivine and leucite lamproites of the West Kimberley region. The spinels range from early Ti-Al-Mg...through Ti-Mg chromite to Ti-chromite and, in Ellendale 4 and 9, Ti-Cr magnetite and Ti-magnetite. Most...850–1220 °C and fO2 ~ MW + 1–2 log units except for Ellendale 4 and 9 spinels which underwent marked late oxidation...Australian National University, Canberra, ACT 2601, Australia has high Sc, Rb and Hf contents, and strongly |  | | Journal (article/letter/editorial) | | PAPER Insights into the petrogenesis of the West Kimberley lamproites from trace elements in olivine A...The Miocene lamproites of the West Kimberley region, Western Australia include olivine-leucite lamproites...temperature with depth of origin (Na, Al, Ca). The West Kimberley lamproite olivines are not enriched in Li,...isotopes. Keywords Lamproite . Olivine . Mantle . West Kimberley . Trace elements Introduction Forsteritic...National University, 142 Mills Road, Acton ACT 2601, Australia 2 ARC Centre of Excellence for Core to Crust |  | | Journal (article/letter/editorial) | | from the West Kimberley area Western Australia ThE lamproites of the West Kimberley area of Western Australia...unweathered, vitrophyric leucite lamproite in the Oscar Plug has provided material for an electron microprobe...of the unaltered groundmass. Occurrence. The 'Oscar Plug' (18 ~ 08' S., 125~ 25' E.) consists of several...westernmost plug is approximately 20 ft. in diameter and slightly elongated in an east-west direction...by a low ridge, 10 ft. wide, of sandstone. This plug has a core of vesicular fitzroyite (vesicles to |  | | Journal (article/letter/editorial) | | Abstract Inclusions occurring in leucites from the Oscar and Zirkel Mesa leucite lamproites consist of high...from lamproites occurring at the Oscar Plug, West Kimberley, Australia (Prider, 1982; Jaques et al., 1986)...microprobe. Inclusions in leucite from the Oscar Plug The Oscar Plug consists of hyalo-olivine leucite lamproite...association with ilmenite, phlogopite, apatite and diopside. Many of the leucite crystals are characterized...rich in potassium. Back-scattered electron image. Oscar hyalo-olivine leucite lamproite. consist of two |  | | Journal (article/letter/editorial) | | Mineral Resources GPO Box 378, Canberra, ACT, Australia AND S. F. FOT,NY Geology Department, Uniuersity...Uniuersity of Tasmania GPO Box 252C, Hobart, Tasmania, Australia Abstract occuras tiny (mostly <20 pm)inclusionsin...pseudomorphs)in leucitelamproitesfrom the West Kimberley region,Western Australia. Thesespinelsdiffer markedly from...phenocrysts in lamproites from the West Kimberley region of Western Australia observed in 0003-004x/8s/l I...a wide range of lamproite types within the West Kimberley suite, all of which contain mica, aluminadeficient |  | Fraser, K.J., Hawkesworth, C.J., Erlank, A.J., Mitchell, R.H., Scott-Smith, B.H. (1985) Sr, Nd and Pb isotope and minor element geochemistry of lamproites and kimberlites. Earth and Planetary Science Letters, 76 (1) 57-70 doi:10.1016/0012-821x(85)90148-7 | Journal (article/letter/editorial) | | studied here exhibit low c y d (lamproites; Western Australia = - 10 to 19.2 and Smoky Butte = -21.6 to...consistent with two-stage evolutions whereas the Western Australia rocks exhibit high 2°Tpb/2°4pb (15.71-15.75)...At Smoky Butte Rb/Sr was also low, but the Western Australia rocks have high Rb/Sr because they are relatively...t d a t a o n s e l e c t e d suites from Western Australia, South Africa, and M o n t a n a , U.S.A....of diamond in olivine-rich lamproites from Western Australia [10] has prompted speculation over possible |  | | Journal (article/letter/editorial) | | Canada Department of Earth Sciences, University of Western Ontario, London, Ontario, Canada With 5 Figures...lamproites: hyalo-leucite phlogopite lamproite (Oscar, West Kimberley); sanidine richterite lamproite (Cancarix...pressures ( < 4 GPa) in the relatively calcium-poor Oscar and Cancarix lamproites. At higher pressure ( >...plus clinopyroxene as near-liquidus phases in the Oscar lamproite and by orthopyroxene plus clinopyroxene...clinopyroxene phlogopite coesite rutile garnet (Oscar); clinopyroxene garnet coesite K±Ti-silicate |  | | Report (chapter) | | Chelima, India, and Precambrian pipe at Argyle, W Australia, to the Middle Pleistocene flows and the Recent...volumetric proportion in the E and W Kimberleys, NW Australia, and the reclassification of the diamondiferous...characterized by the general presence of phlogopite, diopside, leucite and K-richterite, occasional glass, olivine...lamproites at Ellendale and Argyle, on the SW and E margins of the Kimberley craton in N W Australia (Atkinson...diamondiferous sandy tuff lamproite at Argyle, W Australia, is among the largest (125 acres and more than |  | | Journal (article/letter/editorial) | | may be found as inclusions in leucite (Oscar plug, Australia) or in phlogopites (Leucite Hills, Wyoming;...olivines, phlogopite, plus occasionalpyroxenes,diopside, Velde, 1986).Lamproitesdo containCr-rich spinels...spinelsrangebetween16 and 20o/o,wrth contains diopside microphenocrysts. Glass (usually al- a maximum...saturated (McBirney, 1979). In the case of the Oscar plug lamproite, the magma was saturated with leucite...decomposition products of crustal inclusions found within West Eifel trachyte pyroclastics,among which aluminous |  | | Journal (article/letter/editorial) | | data are given for titanian phlogopite, olivine, diopside, titanian potassian richterite, armalcolite, sanidine...(47°19'N, 107°3'W) lies approximately 13 km, due west of Jordan, Garfield County, Montana. This butte...north-northeast trending series of enechelon thin dikes and plug-like bodies extending over a distance of approximately...at the Leucite Hills, Wyoming and West Kimberley, Western Australia. This relationship was substantiated...east-west offset. Many of the dikes in the northern area are in addition offset by an east-west striking |  | | Book | | Leucite-Bearing Rocks of West Kimberley, Australia Leucite-Bearing Rocks of New South Wales, Australia. . . . . . ...Leucite-Bearing Rocks of the Laacher See and Other Areas of West Germany ............... 5.13 Leucite-Bearing Rocks...Nepheline-Kalsilite-Si02 .......... The System Diopside-Leucite-Si02 . . . . . . . . . . .. The System............. The System Diopside-Sanidine-Albite .......... The System Diopside-Nepheline-Sanidine . ....The System Forsterite-Diopside-Leucite-Anorthite . 113 The Join Forsterite-Diopside-Anorthite ......... |  | | Book | | Japan), Professor William S. Fyfe, (University of Western Ontario, Canada) and Professor Peter J. Wyllie...Preface In Chap. 9, phase relations in the system diopside–nepheline–sanidine studied in air and under 1...chapter with reference to the system forsterite-diopside-leucite-anorthite. Association of silica-deficient...be very well understood from the study of the diopside-leucite-anorthite-SiO2 system. Experimental results...study of the systems forsterite-diopside-leucite-akermanite and diopside-nepheline-leucite-akermanite under |  | | Report (volume) | | USA 107 Barry Street, Carlton Victoria 3053, Australia DISTRIBUTORS USA and Canada Blackwell Scientific...Palo Alto California 94303 Australia Blackwell Scientific Publications (Australia) Pty Ltd 107 Barry Street...Ascension Island 269 FITTON, J. G. The Cameroon line, West Africa: a comparison between oceanic and continental...biotites from the Poohbah Lake syenite in north-western Ontario have been dated at around 2.7 Ga (Mitchell...et al. (1983) for the Tupertalik carbonatite in western Greenland. At the present time, alkaline magmas |  | | Book | | subduction regime in eastern New South Wales, Australia. Mantle Dynamics beneath Mongolia: Implications...the growth of Archean cratons: a case study from west Africa. The vertical distribution of indicator minerals...History of Kimberlites from the Type area of 73 Kimberley, South Africa Mineralogical Evidence for, and...Timber Creek Kimberlites, Northern Territory, Australia. Source Characteristics of Brazilian Kimberlites...chemistry. Antarctic diamonds in South-Eastern Australia? Hints from 40Ar/39Ar Laser probe dating of clinopyroxene |  | | Book | | discussions thermodynamic i n lamproites i n Western A u s t r a l i a as d i d new data r e p o r...o f the Wesselton Mine K i m b e r l i t e , Kimberley, South Africa, by S . R . Shee 59 (3) P e t r...review o f the k i m b e r l i t i c rocks o f western A u s t r a l i a , by W . J . A t k i n s o n...ultrapotassic (lamproitic) rocks o f the West Kimberley r e g i o n , Western A u s t r a l i a , by A . L . J...t Smith and E.M. W. Skinner . (5) Spanish and Western A u s t r a l i a n l a m p r o i t e s : aspects |
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