 | | Journal (article/letter/editorial) | | The Origin of New Zealand Ultramafic Intrusions by GWYNETH A. CHALLLIS New Zealand Geological Survey...South Island of New Zealand, and include the large masses of Dun Mountain near Nelson, Red Hills in the...the Wairau Valley, and Red Mountain in north-western Otago. Other, relatively small and almost completely...relatively unserpentinized ultramafic intrusions at Dun Mountain and Red Hills. A smaller isolated mass occurs...Manchester on June 2, 2015 ABSTRACT Dun Mountain, Red Hills, and Red Mountain, are three of the largest ultramafic |  | | Journal (article/letter/editorial) | | Dunite. Localities of Analyzed Materials Dun Mountain, New Zealand I Publication authorized by the Director...e b s t e r ,N o r t h C a r o l i n a . . . . . New Caledonia Twin Sisters,Washington. Methods of Separation...r R e l a ti o n s h i p s Serpenlinization. New Zealand. Sweden.. .. Physical and Chemical Relations...results of chemical analyses of the olivine, enstatite, chromian diopside, and chromian spinel from that...dunite samples from Dun Mountain, New Zealand, and from a locality near Noumea, New Caledonia. The dunite |  | | Book | | UC-NRLF NEW ZEALAND of department Geological Survey Branch (P. G. Morgan, Director). LIST...LIST OF THE MINERALS OF NEW ZEALAND, BY P. O. Issued MORGAN AND under the authority of the Hou, J...Z. JOHN MACKAY, GOVERNMENT PRINTER 1913. NEW ZEALAND-!, n Department jfe 5j Geological Survey...Morgan, Director). LIST OF THE MINERALS OF NEW ZEALAND, P. Issued O. MORGAN AND under the authority...Minerals . . ... LIST OF THE MINERALS OF NEW ZEALAND INTKODUCTION. FOR many years there has been |  | | Journal (article/letter/editorial) | | AND~AGNrSIANROCKSOF NEW ZrALANDo 351 19. The NErnRITE a~d MAGNESIANROCKS Of the SouTrt ISLANV of NEW ZEALAND. By ALEXANDER...work on the olivine-rock of the Dun Mountain, and on the New Zealand nephri~e or ' greenstone,' the rocks...the ' magnesian belt ' of the South Island of' New Zealand have had an absorbing interest for students of...and a discussion of the nature and origin of New Zealand nephrite. Those analyses which are not attributed...south-westerly direction for some miles past the town of Nelson. Serpentines have also been observed in the Buller |  | | Journal (article/letter/editorial) | | of the Basal Alpine-Type Peridotite, Red Mountain, New Zealand by JOHNM. SINTON Department of Geology,*...* University o/Otago, Dunedin, New Zealand {Received 30 June 1976; in revised form 5 October 1976) ABSTRACT...INTRODUCTION T H E Red Mountain ultramafic massif of northwest Otago and south Westland, New Zealand (Fig. 1) is...of the Dun Mountain Ophiolite Belt (Coombs et al., 1973,1976). Peridotite bodies from the Nelson sector...sector of the Dun Mountain belt have been described by Lauder (1965), Challis (1965), Coleman (1966), Walcott |  | | Report (issue) | | NEW ZEALAND DEPARTMENT OF SCIENTIFIC AND INDUSTRIAL RESEARCH NEW ZEALAND GEOLOGICAL SURVEY 125th ANNIVERSARY...1865 -1990 NEW ZEALAND GEOLOGICAL SURVEY BULLETIN 104 ISSN 0077-9628 Minerals of New Zealand by G. L....initials should be G.T., not G.L. Lower Hutt, New Zealand 1990 I I Beach sand, alluvium, • terrace...Figure 1. Simplified geological sketch-map of New Zealand. 0 20 40 60 80 100 KM l INTRODUCTION It...Morgan's "Minerals and Mineral Substances of New Zealand" was published, as NZ. Geological Survey bulletin |  | | Journal (article/letter/editorial) | | water vapor. For talc, however,one mav substitute enstatite,qtJartz,or a vapor phase preferentiallyenrichedin...S0-mile interval of the Great SerpentineBelt of New South \Vales,as describedby Benson (1913-1918).These...serpentinized,periodotitemassesin New Caledonia.The ten selectedNew Zealand samples are part of a larger study...petrologicrelationshipsin the Great Ultramafic Belt of New Zealand. Eighty of the samples were collected at numerouslocalitiesin...alteration to serpentine.In three of the samples(Dun Mtn., Twin Sisters,and Burro Mtn.) more than 40 volume |  | | Journal (article/letter/editorial) | | from N e w Zealand; a new occurrence MCGUINNESSITE was originally described from Red Mountain, Mendocino...author visited the Champion mine [grid reference New Zealand Map Series 1, $20, 638168] which is situated...upper Aniseed valley and about 25 km from Nelson, New Zealand. This mine is at the site of one of a number...serpentinized mafic and ultramafic rocks of the Dun Mountain, in a mineralized belt. The extent of this belt...2 27.4 37A 24.4~ 41.0 Nelson 1.53 1.47 1.17 1.21 Nelson Nelson Red Mountain Bou Azzer * Values corrected |  | | Journal (article/letter/editorial) | | Wairau Valley—New Zealand by G. A. CHALLIS N.Z. Geological Survey, Lower Hutt, New Zealand High-temperature...Blenheim in the north-east of the South Island of New Zealand (see Challis, 1965, fig. 1). It is at the southern...includes the well-known ultramafic intrusion of Dun Mountain. A detailed survey was made of about 8 square...intrusion and as it occurs in the same lens as Dun Mountain, it has always been considered as such (Hess...Permian), similar to those on the western margin of Dun Mountain (Lauder, 1965). The zone of serpentinization |  | | Journal (article/letter/editorial) | | Patuki Volcanics at south D'Urville Island, New Zealand. In addition, gabbroic rocks comprise abundant...after revision May 5, 1983) Introduction The Dun Mountain Ophiolite Belt comprises a discontinuous exposure...length of over 1100 km in the South Island, New Zealand. Two sectors of the ophiolite belt are dextrally...northern sector, in Nelson Province, has received comparatively little attention. In Nelson Province the ophiolitic...volcanics and ultramafics on the eastern limb of the Nelson Regional Syncline (Waterhouse, 1964). The mafic |  | | Journal (article/letter/editorial) | | Ldngban, joesmithite, 876; hyalophane, 914. Nya Zealand, Ldngban, hyalophane, 914. Philipstad, Wermland...district, Andhra Assisi, meteorite, 595. Pradesh, enstatite, hypersthene, 153; Cetine di Cotorniano, Rosia...775. Rhodesia Beb, fergusonite, 50. Beitbridge, enstatite-sillimanite-corundum-cordierite-quartz rock, 1052...Catron City, New Mexico, bixbyite, 976. Franklin, New Jersey, ganophyllite, Franklin Furnace, New Jersey,...Kansas, pyrope, 459. Nelson Creek, Skamania County, Washington, heulandite, 6~:. New Hampshire, lithian |  | | Journal (article/letter/editorial) | | have an important effect on many propertiesof this region,particularly includingthe seismicvelocities. 1...per cent or less.These analysesare from Dun Mountain, New Zealand [Reed, 1959]; Junsterklumpen,Sweden, [Du... * Normative composition:91.6% olivine; 5.3% enstatite;3.1% spinel. discussionwe shall adopt the 3:1...assemblages, despitetheir 2. Olivine -• plagioclase•- enstatite •- clinosimilarity in chemical composition,and...higher-grade continuity, and, furthermore, if this region amphibolitefaciesmetamorphismin the crustal should |  | | Journal (article/letter/editorial) | | June 2, 2016 ON THE NICKEL-IRON ALLOI" AWARUITE OF NEW ZEAL~kND. 619 38. On the Discow.RY, Mol)E oF OCCURRENCE...AWAI~uITE, on the WEST COAST of the SouTlt ISLAND of NEW ZEXLKNI). By Professor G. H. F. ULRICH, F.G.S. (Read...Government Analyst, read a paper before the New Zealand Philosophical Society, Wellington, announcing...of a Nickel-Iron Alloy, which he recognized as a new mineral species and named "Awaruite." The discovery...West Coast of the South Island. Mr. Skey found the new mineral as small grains or scales in a sample of |  | Czertowicz, T. A., Scott, J. M., Waight, T. E., Palin, J. M., Van der Meer, Q. H. A., Le Roux, P., Münker, C., Piazolo, S. (2016) The Anita Peridotite, New Zealand: Ultra-depletion and Subtle Enrichment in Sub-arc Mantle. Journal of Petrology, 57 (4) 717-750 doi:10.1093/petrology/egw001 | Journal (article/letter/editorial) | | Original Manuscript The Anita Peridotite, New Zealand: Ultra-depletion and Subtle Enrichment in Sub-arc...University of Otago, Leith Street, Dunedin 9054, New Zealand; 2Department of Geosciences and Natural Resource...Downloaded from http://petrology.oxfordjournals.org/ at New York University on February 21, 2016 1 *Corresponding...The orogenic Anita Peridotite in Fiordland, SW New Zealand, provides an opportunity to examine the composition...Institute of Water and Atmospheric Research of New Zealand (NIWA)), showing the locations discussed in the |  | | Journal (article/letter/editorial) | | rocks By G. A. CHALLIS New Zealand Geological Survey, Lower Hurt, New Zealand [Taken as read 8 June 1967]...containing equidimensional undeformed olivine, enstatite, diopside, and chromite. The starting material...large ultramafic intrusions such as Red Hill in New Zealand (Challis, 1965) many of the olivines are dimensionally...ultramafic intrusions, such as Red Hill and Dun Mountain (Challis, 1965), tend to adopt a preferred orientation...(1965) in a detailed petrological study of the Dun Mountain ultramafic rocks, has drawn attention to the |  | | Journal (article/letter/editorial) | | Nephrite and Magnesian Rocks of the South Island of New Zealand." By A. M. Einlayson, M.Sc. (Communicated by...further elucidation of the structural geology of the region. The rocks are intrusive into sedimentary strata...of the most interesting groups is at the Dun Mountain, Nelson, where the original dunite of Hochstetter...Bonney from this region. The serpentine-talc-carbonate rocks are the matrix of the New Zealand nephrite or...cataclastic structure, a hartzbergite in which the enstatite is often completely altered to magnesite, and |  | | Journal (article/letter/editorial) | | group. Porphyroclastic olivine (Fo89.0_9o.4), enstatite (En89.s-91.0; A1203; 3.0-6.5%) and diopside (Wo43_46En51...conclusions may be drawn: (1) The upper mantle in this region consists principally of depleted lherzolite with...knowledge concerning the nature o f the source region o f ocean ridge basalts (MORB) is derived indirectly...melting [12]. In extensively serpentinized rocks enstatite is partly or totally replaced inwards from the...fine-grained and proximal to porphyroclastic enstatite suggesting a derivation by unmixing from the latter |  | | Journal (article/letter/editorial) | | process begins always with the reaction olivine + enstatite + water = serpentine, during which olivine, occurring...stoichiometric excess, is preserved unaltered, and enstatite and a corresponding quantity of olivine are converted...replacement of olivine by serpentine, and not enstatite, is" observed, as has been recorded by Lodochnikov...reactions take place, expressed in the replacement of enstatite by anthophyllite, talc, and serpentine (Bowen...stability of enstatite is bounded by higher temperatures than that of olivine, enstatite is subjected |  | | Journal (article/letter/editorial) | | Viterbo Region," Jour. Geol., IV (1896), 838. 2 Ibid., V (1897), 351; "The Roman Comagmatic Region," Carnegie...chemical analysis of a specimen from the Butte region, that the plagioclase has Ab1An1centers but more...BuchSapplied 1Henry S. Washington, "The Roman Comagmatic Region," Carnegie Publication No. 57 (Washington, 19o6)...extrusive representatives of norite, deserve the new name. (2323) See note under santorinite (2215)....another is allivalite HARKER,soccurringon Allival, a mountain on the Isle of Rum and consisting of anorthite |  | | Journal (article/letter/editorial) | | of Mines) supplied specimens from Russia and New Zealand, and British Columbia, respectively. Other specimens...claesijicrrtion Locdion I Dunite Dunite portion (cf. 8) Dun&e Dunite S.E. S.E. S.E. S.E. :: 31 Lherzolite...Hill, Md. Belvedere Mt., Vermont Saranovskoys, Rue& New Caledonia Dunite Dunite Dunite Dunite Dunite Dunite...N.C. Balsam Gap, N.C. Nelson, N.Z. Nizni Taguil, Rusais Nizni Taguil, Russia Dun Mt., N.Z. Kraeny Urals...KEARNS, 1952) ~0+001% (this paper) Abundance of K in dun&e ~1 .3-26o/o (see discussion b$ow) Abundance of |  | | Journal (article/letter/editorial) | | weathering on heavy minerals from the Cascade River, New Zealand Andrew C. M o r t o n 1 and David Smale 2 1 British...K.) New Zealand Geological Survey, University of Canterbury, Private Ba$ Christchurch (New Zealand) Received...weathering on heavy minerals from the Cascade River, New Zealand. Sediment. Geol., 68" 117-123. The effects of...from the Cascade-Martyr river system 0Vestland, New Zealand) and its associated beach. These rivers drain...unstable minerals, including forsteritic olivine, enstatite, diopside, actinolite-tremolite and Ti-rich brown |  | | Journal (article/letter/editorial) | | 1964;Green,1964;Hostetler et al., 1966) have given new impetus to the theory, also held by some Russians...as much SiOzin albite as 3.9 per cent MgO in enstatite or 7.8 per cent MgO in forsterite; correspondingfigures...The very low normative pyroxene in the Mayaguez dun i t e si s a t t r i b u t a b l ep a r t l y a t...relict grains of and serpentine pseudomorphs after enstatite and diopside, respectively (Mattson, 1964, p....like granuration in olivine and kink-banding in enstatite, which actually are relict from earlier magmatic |  | | Journal (article/letter/editorial) | | GrantCounty,Oregon.R. E. Stevens,analyst. 5. G zone, Mountain View area, Stillwater Dinnin, Complex,Montana...pattern of compositionalvariation. In the Caribbean region,includingCuba, Guatemala,and Venezuela,the molecularpercentage...someof the most duniticmassifs,suchas Dun Mountain,New Zealand,containvery little chromite(3, p. 61)...Coarse-grainedchromitite from the Ti•baghi mine, New Caledonia,showinginterlockinggrain boundaries(outlinedin... Pennsylvania) and at various angles (Ti•baghi, New Caledonia,about 60ø and Domokos, Greece,about 30ø) |  | | Journal (article/letter/editorial) | | serpentinization on velocities and Poisson’s ratio. New velocity data are presented for some common accessory...well-exposed ultramafic massifs, Red Hills, New Zealand and Twin Sisters, USA. Finally, the problem of...(modified from Christensen, l966). velocities of a region, seismologists must focus on rock composition,...et al., 2002). Horen et al. (1996) concluded that new velocity-density measurements at atmospheric pressure...for upper mantle rocks above subducting plates. New velocity-density plots are shown in Figure 3 using |  | Xie, Hong-Jing, Wang, Yu-Wang, Guo, Bo-Ran, Shi, Yu, Zhou, Guo-Chao (2019) Characteristics and petrogenesis of the “Pale Microgranular Masses” in ophiolite-type chromitites in northern Xinjiang. Ore Geology Reviews, 115. 103168 doi:10.1016/j.oregeorev.2019.103168 | Journal (article/letter/editorial) | | peridotites in ophiolite areas in Japan and New Zealand, they have been neglected as tectonic inclusions...2014). Rodingite, which was first discovered in New Zealand, is a white and gabbro-like rock that commonly...assemblage. In this contribution, we present and discuss new petrological evidence and mineral and whole-rock...deposits in northern Xinjiang The northern Xinjiang region, located at the junction between the Siberia, Kazakhstan...G., Peng, G.Y., Zhang, R.M., Chen, Q.Z., 1990. A new idea about the genesis of the aluminium rich podiform |
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