 | | Journal (article/letter/editorial) | | Springer-Verlag1989 Investigations of the Stillwater Complex: Part V. Apatites as indicators of evolving...Chemistry Building, Duke University, Durham, NC 27706, USA 2 Department of Geological Sciences, AJ-20, University...University of Washington, Seattle, WA 98195, USA Abstract. Variations in the F, C1 and OH contents of apatite...analysis of intercumulus apatires from the Stillwater Complex reveal that Cl-rich apatites, typically containing...wt % C1, occur throughout the lower 1/3 of the complex excluding the Basal series. A change from Cl-rich |  | | Journal (article/letter/editorial) | | pp. 279-289 (2004) THE RELATIONSHIP BETWEEN CHLORAPATITE AND PGE-RICH CUMULATES IN LAYERED INTRUSIONS:...unusually high XCl values (as much as ~0.85). Chlorapatite is quite uncommon in such settings, but is associated...significant J–M and Merensky PGE reefs of the Stillwater and Bushveld complexes, respectively. However...horizons in the Kläppsjö Gabbro, there is no chlorapatite, as there is in those two complexes, nor are...anormalement élevées en XCl (jusqu’à ~0.85). La chlorapatite est relativement rare dans de tels milieux, |  | | Journal (article/letter/editorial) | | temperaturealteration of REE-rich chlorapatite from the Stillwater Complex, Montana A. E. Bounnp.q,u Department...Seattle,Washington 98195, U.S.A. Ansrru,cr Chlorapatite is associatedwith coarse-grainedolivine-rich...mineralization of the J-M Reef of the Stillwater Complex. The chlorapatite may contain in excessof 2 wto/oof...healed fractures in individual grains of primary chlorapatite. The alteration assemblageincludes hydroxyapatite...loss of Cl from the host chlorapatite. The progressivedestruction of chlorapatite led to increasedchlorinity |  | Schisa, Paul, Boudreau, Alan, Djon, Lionnel, Tchalikian, Arnaud, Corkery, John (2015) The Lac Des Iles Palladium Deposit, Ontario, Canada. Part II. Halogen variations in apatite. Mineralium Deposita, 50 (3) 339-355 doi:10.1007/s00126-014-0541-4 | Journal (article/letter/editorial) | | Block Intrusion (MBI) of the Lac des Iles Igneous Complex shows two pronounced trends in the halogens. Apatite...from the Pd-sulfide zone contain up to 57 mol% chlorapatite endmember with significant hydroxyapatite component...(amphibolite and greenschist assemblages) the chlorapatite component is typically less than 10 mol% with...Sciences, Duke University, Box 90227, Durham, NC 27708, USA e-mail: boudreau@duke.edu L. Djon : A. Tchalikian...Block Intrusion (MBI) of the Lac des Iles Igneous Complex (LDIC) is a small, crudely concentrically zoned |  | | Journal (article/letter/editorial) | | Solution calorimetric investigation of fluor-chlorapatite crystalline solutions Guy L. Hovis1,* and danieL...have been made on 17 synthetic fluorapatite-chlorapatite crystalline solutions at 50 °C in 20.0 wt% HCl...indicated by either synthetic or natural fluor-chlorapatite specimens. Based on full chemical analyses,...the fluor-chlorapatite system. Keywords: Enthalpies of mixing, fluorapatite, chlorapatite, thermodynamics...fluorapatite [Ca5(PO4)3F] and, to a much lesser extent, chlorapatite [Ca5(PO4)3Cl]. Overall, apatite is a natural |  | | Journal (article/letter/editorial) | | (1994) presented a model for the formation of chlorapatite and fluorapatite in layered intrusions that...much of the lower stratigraphic sections of the Stillwater and Bushveld complexes can be explained solely...intrusions that contain high-C1 apatite such as the Stillwater and the Bushveld complexes. The second and more...intercumulus apatite present, whether fluorapatite or chlorapatite, is usually a function of the amount of other...minerals such as quartz. For example, within the Stillwater complex, relatively abundant amounts of F-rich apatite |  | | Journal (article/letter/editorial) | | Pea Ridge magnetite–apatite ore deposit, Arkansas, USA. Daniel E. Harlov1,2 1811-5209/15/0011-0171$2.50...mineral for “fi ngerKEYWORDS : fluorapatite, chlorapatite, monazite, xenotime, brines, CO2 , printing”...considerably more dilute in HF than is the case for chlorapatite or hydroxylapatite, indicating that F is strongly...partitioned into fluorapatite. In order for chlorapatite to be stable, considerably higher concentrations...Russian Federation) —has been metasomatized to chlorapatite (Krause et al. 2013). This includes both matrix |  | | Report (issue) | | Chlorapatite Ca5 (PO4 )3 Cl c 2001-2005 Mineral Data Publishing, version 1 Crystal Data: Hexagonal...(OH)0.05 F0.04 ]Σ=1.00 . (2) Fairfax, Virginia, USA; H2 O calculated for stoichiometry, corresponding...Polymorphism & Series: Mineral Group: End-member chlorapatite is monoclinic. Apatite group; Cl > F or OH... titanite, datolite (Bull Run quarry, Virginia, USA); olivine, orthopyroxene, phlogopite, ferroalluaudite...Distribution: Analyzed material noted from: in the USA, the Fairfax quarry, Centreville, Fairfax Co., and |  | | Journal (article/letter/editorial) | | near the top of the exposed Mafic Sequence. The chlorapatite component decreases from a typical high of 10—20...Duke University, Box 902237, Durham, NC 27708—0227, USA M. D. Prendergast 1 Carson Close, Greendale, Harare...recrystallized apatite characterized by a decrease in the chlorapatite component and an increase in the hydroxyapatite...times of 10—40 s. Standards included natural chlorapatite (RM-1, Morton and Catanzaro 1964) and fluorapatite...cumulus apatite from the Upper Zone of the Bushveld Complex of South 292 Africa. Analysis of nine c-normal |  | | Journal (article/letter/editorial) | | show Cl enrichment as high as that seen in the Stillwater and Bushveld complexes beneath the major stratabound...microprobe at Duke University, Durham, North Carolina, USA. Typical analytical conditions were 15 Kev acceleration...were counted first. Standards included natural chlorapatite (RM-1, Morton and Catanzaro, 1964) and fluorapatite...y'y' d d d s y' a y' a a w ww a a a a y' s y' Stillwater and Bushveld below PGE reefs OH FIG 3. Halogen...show compositional ranges in the Bushveld and Stillwater complexes, the Great Dyke, and the Skaergaard |  | | Journal (article/letter/editorial) | | within apatite: Nature and experiment. Part I. Chlorapatite DANIEL E. HARLOV,1,* HANS-JÜRGEN FÖRSTER,1,2...Netherlands ABSTRACT This study investigates chlorapatite [ideally Ca10(PO4)6Cl2)] from two spatially...amphibolite-facies conditions. Relative to the original chlorapatite, metasomatized areas in sample DL136 are enriched...(Y + REE) abundances similar to the original chlorapatite, and host only a few monazite and xenotime grains...with 1–2 wt% H2O) were conducted on unaltered chlorapatite from the Ødegårdens Verk. In the H2O experiments |  | | Journal (article/letter/editorial) | | June 2016, Vol. 80(4), pp. 585–637 The Stillwater Complex, Montana – Overview and the significance of volatiles...Sciences, Duke University, Box 90227, Durham, NC 27708, USA [Received 31 May 2015; Accepted 19 November 2015;...ACT The geology of the 2.7 Ga Stillwater Complex in South-Central Montana is reviewed with a focus on the...involved in the crystallization of the Stillwater Complex. A dry Stillwater magma would have been mineralogically...element and chromium deposits. K E Y WO R D S : Stillwater Complex, layered intrusions, J-M Reef, platinum-group |  | | Journal (article/letter/editorial) | | is located in the Lower Zone of the lmandrovsky complex. Platinum-group minerals (PGM) are associated with...of genetic significance. Chlorapatite containing up to 100% of the chlorapatite endmember occurs in individual...total PGM) are found enclosed by hydrosilicates. Chlorapatite ( > 6.0 wt.% C1) was recorded, as an intercumulus...and Lukkulaisvaara intrusions similar to the Stillwater and Bushveld complexes. The PGE mineralogy of...in/ihnlicher Weise beeinflul3t haben, wie dies im Stillwater und Bushveld-Komplex der Fall war. Die PGE-Mineralogie |  | | Journal (article/letter/editorial) | | the composition of apatite in the Munni Munni Complex and associated intrusions of the West Pilbara Block...Geology, Duke University, Durham, NC 277084227, USA ‘Australian Geological Survey Organisation, Canberra...stratigraphic coverage is from the Munni Munni complex, where the mole fraction of fluorapatite increases...over 90% near the top of the gabbroic zone. The chlorapatite component decreases from a high of 20-30 mol%...exception of the unusually Cl-rich assemblages of the Stillwater and Bushveld complexes, processes affecting halogen |  | | Journal (article/letter/editorial) | | the 1Montana College of Mineral Science, Butte, Montana, and the 2 Rockwell International Science Center...California, U.S.A. A Preliminary Description of Complex Graphite, Sulphide, Arsenide, and Platinum Group...Mineralization in a Pegrnatoid Pyroxenite of the Stillwater Complex, Montana, U.S.A. A. Volborth 1 and R. M. Housley2...element mineralization in the Stillwater Layered Anorthosite Complex, Montana. The graphite occurs in a pegmatoid...pipes and potholes of the Merensky Reef, Bushveld Complex. The fact that major graphite-sulphide mineralization |  | | Journal (article/letter/editorial) | | Fleet, 2002 and references therein). Of these, chlorapatite [ideally Ca10(PO4)6Cl2], either as a near end...et al., 2000; Harlov et al., 2002a). Although chlorapatite has the same hexagonal symmetry (P63/m) as fluorapatite...temperatures > 350°C, at temperatures < 350°C chlorapatite shows a monoclinic symmetry (P21/b) (Bauer &..., 1985; Zhu & Sverjensky, 1991). In nature, chlorapatite can occur as an accessory mineral in layered...Cl solubility since these elements apparently complex quite easily as salts in the melt. Contact metamorphism |  | | Journal (article/letter/editorial) | | with chromite, troilite, kamacite, taenite, chlorapatite, and whitlockite. Recrystallization has been...orthopyroxene, clinopyroxene, plagioclase, chromite, chlorapatite, whitlockite, troilite, kamacite, and taenite...as permanganate, chromate, and heteropoly blue complex, respectively. Sodium and K were determined by...199 1.074 0= 32 Two phosphates are present: chlorapatite and whitlockite, in the proportions of 1:3;...Electron Microprobe Analyses of Chlorapatite and Whitlockite Chlorapatite (3) so, Whitlockite (3) PzOs |  | | Journal (article/letter/editorial) | | 5251 Broad Branch Road, NW Washington, DC 20015, USA E-mail: drumble@carnegiescience.edu E LEMENTS ,...their approximate crystallographic orientations in complex mineral intergrowths. Recently published studies...mafic rocks has been found in the Archean Stillwater (Montana, USA) and Proterozoic Bushveld (Republic of...carbon has δ13C VPDB values of –16.4 to –20.3‰ and Stillwater –14.7 to –16.3‰ (Wilson et al. 1995)1. The hydrous...1985). Chlorapatite replaces calcic pyroxene in the presence of graphitic carbon in the Stillwater intrusion |  | | Book | | elements (PGE). Using examples from the Bushveld complex of South Africa and other intrusions, this book...One Liberty Plaza, 20th Floor, New York, NY 10006, USA 477 Williamstown Road, Port Melbourne, VIC 3207,...Deposits: Examples 2.4.1 The Bushveld Complex 2.4.2 The Stillwater Complex 2.4.3 Skaergaard Intrusion 10 10...Inclusions 7.2.1 Silicate Liquid Inclusions in the Stillwater Complex 7.2.2 Other Examples of Silicate Liquid Inclusions...Inclusions 7.3.1 Fluid Inclusions in the Stillwater Complex 7.3.2 Fluid Inclusions and Hydrosaline Melt |  | | Journal (volume) | | intrusions and the Keivitsa-Satovaara layered complex, northern Finland by Tapani Mutanen Geological...INTRUSIONS AND THE KEIVITSA-SATOVAARA LAYERED COMPLEX, NORTHERN FINLAND by TAPANI MUTANEN with 233...intrusions and the Keivitsa-Satovaara layered complex, northern Finland. Geological Survey of Finland...mafic main magma. Unusual minerals (loveringite, chlorapatite. zircon, zirconolite, baddeleyite, thorite,...intercumulus of the ultramafic cumulates; ilmenite, chlorapatite and zirconolite occur as daughter and occluded |  | | Journal (article/letter/editorial) | | application to the crystal chemistry of fluorapatite-chlorapatite solid solutions GeorG Schettler,1 MatthiaS GottSchalk...synthetic apatite crystals along the fluorapatite-chlorapatite Ca5(PO4)3(F,Cl) join have been synthesized at...F. In nature, fluorapatite [Ca5(PO4)3F] and chlorapatite [Ca5(PO4)3Cl] form a continuous solid-solution...indication of a miscibility gap along the flour-chlorapatite join. However, at low temperatures exsolution...physical-chemical and structural properties of the fluor-chlorapatite solid solution is important for the calibration |  | | Journal (article/letter/editorial) | | Cherepovets, Russia ABSTRACT The ~3.5 km thick Kivakka complex (2.45 Ga) in northern Karelia hosts a zone of disseminated...(BMS) and interstitial phases [nearly pure Ab, chlorapatite, zircon, Fe-(Ti) oxides, etc.]. Apatite is characterized...intergranular), which attain the composition of chlorapatite (.6 wt.% Cl), not observed below the zone. The...process during fractional crystallization of the complex. Keywords: platinum-group elements, apatite, zone...characteristics and variations in the series fluorapatite–chlorapatite–hydroxylapatite have been described for various |  | Barkov, Andrei Y., Nikiforov, Andrey A., Barkova, Larisa P., Martin, Robert F. (2022) Occurrences of Pd–Pt Bismuthotellurides and a Phosphohedyphane-Like Phase in Sulfide Veins of the Monchepluton Layered Complex, Kola Peninsula, Russia. Minerals, 12 (5) 624 doi:10.3390/min12050624 | Journal (article/letter/editorial) | | Phase in Sulfide Veins of the Monchepluton Layered Complex, Kola Peninsula, Russia Andrei Y. Barkov 1, *,...of massive sulfides in the Monchepluton layered complex, Kola Peninsula, Russia. These veins consist of...Phase in Sulfide Veins of the Monchepluton Layered Complex, Kola Peninsula, Russia. Minerals 2022, 12, 624...adits in the Monchepluton layered basic–ultrabasic complex has led to the discovery of a member of the py... in the Monchepluton layered mafic–ultramafic complex of Paleoproterozoic (~2.5 Ga) age [1,2]. We explore |  | Jones, Rhian H., McCubbin, Francis M., Dreeland, Linda, Guan, Yunbin, Burger, Paul V., Shearer, Charles K. (2014) Phosphate minerals in LL chondrites: A record of the action of fluids during metamorphism on ordinary chondrite parent bodies. Geochimica et Cosmochimica Acta, 132. 120-140 doi:10.1016/j.gca.2014.01.027 | Journal (article/letter/editorial) | | of New Mexico, MSC03 2040, Albuquerque, NM 87131, USA b Institute of Meteoritics, University of New Mexico...Mexico, MSC03 2050, Albuquerque, NM 87131, USA c Division of Geological and Planetary Sciences, California...Institute of Technology, MC 170-25, Pasadena, CA 91125, USA Received 3 June 2013; accepted in revised form 22...contain two phosphate minerals, merrillite and chlorapatite, both of which are secondary minerals that developed...merrillite and chlorapatite, as well as textures indicating replacement of merrillite by chlorapatite, support |  | | Journal (article/letter/editorial) | | elsevier.comrlocaterchemgeo Halogens of Bushveld Complex, South Africa: d37Cl and ClrF evidence for hydration...27708, USA Department of Geology, UniÕersity of North Carolina at Wilmington, Wilmington, NC, USA c Hugh...Africa Accepted 31 May 2001 Abstract The Bushveld Complex is one of only a few layered intrusions anomalously...reserved. Keywords: Halogens; Cl isotopes; Bushveld Complex; Layered intrusions; Igneous volatiles 1. Introduction...Corp., 17001 Northchase Dr., Houston, TX 77060, USA. 2 Current address: Graduate School of Oceanography |
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