 | | Journal (article/letter/editorial) | | MAY_JUNE 1965 MACKINAWITE AND VALLERIITE IN THE MUSKOX INTRUSION .q.No R. N. Dnr.-,lnro, J. A. Cn...a, Ottaua, Ontario. Anstnlcr Nfackinawite and valleriite have been observed in the dunites and pyroxenites...central la)rered series ol the Muskox intrusion, Northwest Territories, Canada New electron probe measurementsand...associatedwith this mineral in serpentine-bearingrocks Valleriite occurs in serpentiner,vhereit may replace secondary...process. Ixtnopucttolg Both mackinawite and valleriite have been identified in the courseof a generalstudl' |  | | Journal (article/letter/editorial) | | describedby- Kouvo et al (1963) and from the Muskox intrusion in Canada by Chamberlain and Delabio (1965). During...presentinvestigationmackinawite was distinguishedfrom valleriite in the carbonatite and pegmatoid of Loolekop...properties given for the same mineral from the Muskox intrusion by Chamberlain and Delabio (1965). The mineral...colors of mackinawite serve to distinguish it from valleriite, the anisotropic colors of which vary from a...bronze. It also has a higher reflectivity than valleriite. The identification of mackinawite in pentlandite |  | | Journal (article/letter/editorial) | | 1037-7052(1972) TWO FIBROUS IRON SULFIDES AND VALLERIITE FROM CYPRUSWITH NtrW DATA ON VALLtrRIITE1 D....with optical and physical properties similar to valleriite, are described from an ultrabasic complex located...pattern resembles but is distinct from that of valleriite and of the Type I phase and can be indexed on...iron sulfide," previously described from the Muskox Intrusion, N.W.T. and from the Lizard ultramafics in...been examined and compared to those of normal valleriite from Sweden. As they are clearly members of a |  | | Journal (article/letter/editorial) | | iron sulfide described by Jambor from the Muskox Intrusion has been found in the Lizard ultramafics in...has briefly described the occurrence in the Muskox intrusion of an unusual fibrous sulfide, intimately...has been recognised as a minor constituent of valleriite-bearing talc-minnesotaite-calcite veinlets cutting...electron microprobe studies have shown that the valleriite, with a composition corresponding to that deduced...containing major AI and Mg, but distinguished from valleriite by the presence of variable amounts (-2-8 weight |  | | Journal (article/letter/editorial) | | Washington (MILTOX and MILTON 1958) and the Pefkos area, Cyprus (ANTu>~ et al. 1966). Although the above...HARRIS and VA~JOHAN (1972) rdated the formation of valleriite, mackinawite and two unnamed fibrous Fe sulphides...N.: The tectonic conditions accompanying the intrusion of basic and ultrabasic igneous rocks. U. S. Natl... 377 CHAMBERLAIN, J. A.: Sulfides in the Muskox Intrusion. Can. J. Earth Sci. 4, 105-153 (1967). --DELAmO...--DELAmO, R. N.: Mackinawite and valleriite in the Muskox Intrusion. Am. Mineralogist 50, 682--695 (1965) |  | | Journal (article/letter/editorial) | | limited. Valleriite was not produced at the temperature of 700"C in any of the runs, and valleriite was also...Mnln, C., INcnau, B., eNl Brnmn, R. A. (1964) Valleriite and the neu' iron sulfide, mackinawite, U. S...The cr5'5111structure and cr1'stal chemistry of valleriite, Z. Kristallo gr., 127, 73-93. Senrmcnt, G. (1968)...(1968) Electronprobe analyses of mackinarvite and valleriite, Neues Jahrb. M iner al. M onatsh. 8, 252-258... NOVEMBDR-DECEMBER, 1970 X{INERAL FRO\{ A "VALLERIITE-TYI)E" NORIL'SK, WESTERN SIBERIAI D. C. Hanus |  | | Report (issue) | | corresponding to (Fe1.06 Ni0.05 )Σ=1.11 S1.00 . (2) Talnakh area, Russia; by electron microprobe, corresponding to...peridotites, and in the reducing environment of river bottom muds; may be produced by magnetotactic and...Washington [TL]; in muds from the bottom of the Mystic River, Boston, Suffolk Co., Massachusetts; from the Howard...borate deposit, Boron, Kern Co. In Canada, in the Muskox intrusion, Northwest Territories, and at the...Cornwall. On Cyprus, at Skouriotissa. In the Talnakh area, Noril’sk region, western Siberia, and at the Kovdor |  | | Journal (article/letter/editorial) | | discovered in drill cores from the Muskox Intrusion, N.W. T., Canada by Jambor (1969). Clark (1970) reported...pyrite and irregular composed grains are of intrusion The are with sphalerite. microscopic microns...1), 2: image, 6: Mg-Ka scanned Cu-Ka image, area image, 7: (Abbreviations 3: Ca-Ka Fe-Ka image...containing of tochilinite represents of in same area line skarn and shown the prove electron vesuvianite...Equilibrium and 57, D. A. and data on valleriite valleriite. (1972), Two from Cyprus fibrous Amer |  | | Journal (article/letter/editorial) | | which are in close agreement with that of normal valleriite oI a 3.792 and c 34.10 A. The Noril'sk mineral...appearsto representthe end member of a seriesof "valleriite-type" minerals with the Mg-Al positions in the...Rucklidge, University of Toronto, who suggested the "valleriite-type" formula from our microprobe analysis I{rlrnrNcns... Dnreero (1965) Mackinalvite and valleriite in the Muskox intrusion. Amer. Mineral 50,682 695. IivaNs...The crystal structure and crystal chemistr.v of valleriite. Z. Kristallogr., 127, 73-93. GnNr |  | | Journal (article/letter/editorial) | | Although these optical properties are exceptional, valleriite has similarly outstanding optical properties...as a result, the two have often been confused. Valleriite has been described from stony meteorites by Ramdohr...the microprobe set to continuously sweep across an area containing an abundance of the grains in question...absence of copper precludes the occurrence of valleriite. Line traverses for Fe and Ni, and electron beam...lepidocrocite and sulphur. Further, at the Muskox intrusion, one of the most thoroughly studied mackinawite |  | | Journal (article/letter/editorial) | | Mineralogist, Volume 59, I9O-200, 1974 serected Area Erec[ffr.?rli[,9t'ft'rr:]:lt ora rvperl N. I. OnceNovl... USSR Abstract Selected Area Electron Diffraction studies of the "valleriite-like" mineral type II of...tochilinite mineral group, which differs from the valleriite group in the structure of the sulfide layer....in a paper on the structure determination of valleriite, first demonstrated the possibility of minerals...of alternating sulfide and brucite layers. In valleriite, the sulfide layers of composition Fe, orCuo |  | | Journal (article/letter/editorial) | | lately separatedfrom the latter, since the ,,valleriite"-type has proved to consist of two distinct mineral...peaks of metamorphism ComIgneous Bushveld the of intrusion the and volcanism Ventersdorp reclosely which...22s-2s0o c. These data were originally advanced for "valleriite" in its former sense,but refer actually to mackinawite...with regard to theseinclusionsthe presenceof "valleriite" had already beenrecorded by Ramdohr (195sb)...Der.ar:ro (1965) Mackinawite and valleriite in the Muskox intrusion. Am. Mineral.sO, 682 695. Devrosom |  | | Journal (article/letter/editorial) | | Pnorpnrrrs on'Velr-Bnrrtn SrNcnsHuM Gnlv Sur.rrnr Valleriite (after Chamberlain and Delabio, 1965; Genkin...to grayish, somewhat less extreme than that of valleriite of the Singhbhum mackinawite have failed owing...This phase is, therefore, somewhat similar to valleriite in its optical properties (Table 1). Ar.lar-vrrcar-...phase which occurs in the Singhbhum ores is not valleriite, but is chemically allied to normal mackinawite... Dnr.lnro (1965) Mackinawite and valleriite in the Muskox Intrusion. Amer. Minerol. 50, 682-695. Clem |  | | Journal (article/letter/editorial) | | The Replacement of Chrome Spinel by Chromian Valleriite in Sulphide-Bearing Ultramafic Rocks in Western... Perth, W. A., Australia Abstract. Chromian valleriite occurs as a replacement product of chrome spinel...substitution of Fe and Ni for Cu. At Perseverance, valleriite, with minor admixed chrome spinel, has a composition...16Tio.o3(OH)2 ]. Conversion of chrome spinel to valleriite is attributed to addition of Cu and S from the... 266 E.H. Nickel and D. R, Hudson reported valleriite replacing and rimming chromite from Greece, but |  | | Report (issue) | | )Σ=1.00 (OH)2 ] by analogy to valleriite. (2) Dumont property, Canada; by electron microprobe, (OH)1−...clinohumite, hydromagnesite, graphite, calcite (Bancroft, Canada). Distribution: In Russia, in the Voronezh district...Cornwall open pit, Lebanon Co., Pennsylvania, USA. In Canada, in the Stephen Cross and Maxwell quarries, near...Dumont property, near Amos, Quebec; in the Muskox intrusion, Northwest Territories; from near Bancroft |  | | Journal (article/letter/editorial) | | many ultramaficrocks,as for example,in the Middle River Range, British Columbia (Little, 1949), at Timmins...about 1:50 for massive including native copper, valleriite, and cobaltian ore and 1: 8 for matrix ore. In... 1963; Bright and Lake, 1965 Middle Little, River Range, B.C. 1949 Serpentine facies po-mg-pn sp...aw-pn-mg ant hz-ml- (mg) ant Muskox intrusion, N.W.T. Muskox intrusion, N.W.T. Poschiavo, Selva-Quadrada...hz-pn (-mg) hz-mg aw(-mg) sp sp sp sp Heazlewood River, Tasmania Trial Harbour, Tasmania Canari, Corsica |  | | Journal (article/letter/editorial) | | ............................... Geologyof the area ........................... Nature of mineralization...quartziteand phyllite. The loci for Geology of the Area mineralizationare schistoseplanes,cleavageplanes...andthe youngerAjab- pyrite, cubanite,mackinawite,valleriite,pyrite, margarh seriesis composed of metamorphosed...(Fro. 2). Falleriite.--Authentic occurrences of valleriite are very rare, as has been reported by Evans...probablyof mackinawite. The mineral describedhere as valleriite has all the opticalproperties listedfor it by |  | | | | crystal structure and crystal chemistry of valleriite By HOWARD T. EVANS, JR. U.S. Geological Survey...interlayering of layers [Mg.68A1.32 (OH)2]; and . of valleriite has been determined to consist of alternate of...ratio of 21: 17, hence the overall composition of valleriite is This result is in 1.526 [Mg.6sAl.sdOH)2] ...the unusual properties and occurrence of valleriite. Valleriite belongs to a well established group of...charged layers of another kind. Introduction Valleriite was first described and named by BLOMSTRAND(1870) |  | | Journal (article/letter/editorial) | | crystal structure and crystal chemistry of valleriite By HOWARD T. EVANS, JR. U.S. Geological Survey...interlayering of layers [Mg.68A1.32 (OH)2]; and . of valleriite has been determined to consist of alternate of...ratio of 21: 17, hence the overall composition of valleriite is This result is in 1.526 [Mg.6sAl.sdOH)2] ...the unusual properties and occurrence of valleriite. Valleriite belongs to a well established group of...charged layers of another kind. Introduction Valleriite was first described and named by BLOMSTRAND(1870) |  | | Journal (article/letter/editorial) | | Geological'Sciences, Queen's Uniaersity, K'in gston, Ontario, Canada. I would like to presentsomepublishedand new observationson...N. Drlanro (196.5)Mackinawite and valleriite in the Muskox intrusion Amer. Mineral 50, 682-695. Cr.a.nx...and bravoite from the Langis mine, Cobalt-Gowganda area, Ontario Can. M ineral. 9, 597416. Scuror.owsrr |  | | Journal (article/letter/editorial) | | Carbonatites and alkalic rocks of the Arkansas River Area, Fremont Countyr Colorado. 2. Fetid gas from...f t h e p r e c a m Denver brian, Mountarn Parks area, Colorado (abs.). 280 Borcarite (Pertzev, Ostravskaya...Carbonatites and alkalic rocks of the Arkansas River Area, Fremont County, Colorado. 2. Fetid gas from...A. and Delabio' R. N. Mackinawite and valleriite in the Muskox intruslon. . Chao, C. 682 519 INDEX...rare-earth uranium carbonate mineral from the Green River formation, Wyommg Clarlre, Ii. S., Jr (Book revierv) |  | | Journal (article/letter/editorial) | | retrogradesulfidemineralsincludingmackinawiteafter pentlandite,valleriite, and troilitehexagonalpyrrhotiteintergrowths...ultramaficand pelitic rocksthroughoutthe Widgiemoolthadome area (Archibald et al., 1978), and temperature-pres-...Simplifiedgeologicalinterpretationof the Warmaway Rock types area. Basedpartly on mappingby AnacondaAustraliaInc....much higher Co contents(2.60 to 2.95 at. ationto valleriite(Fig. 9). In.some,the alterationhas % Co for 8...r- evidencefor replacement of spinalgrainsby valleriite rhotitewith preservation of the pyrrhotitebasalcleav- |  | | Journal (article/letter/editorial) | | greater uplift than the central dome (Fig. 1). This area is cut by steep normal faults, which together with...fault zone and/or the limit of the large gabbroic intrusion may be responsible for the differences in topography...thus pentlandite and chalcopyrite plot in the same area of the diagrams. The serpentinized peridotites are...Atlantis Massif are reported for comparison (shaded area; data from Delacour et al., 2008). formed during...recovered at Iberian Margin, Hess Deep and MARK area. 4.1.2. Olivine-rich troctolites and olivine gabbros |  | | Journal (article/letter/editorial) | | recrystallization in the Western Laouni mafic intrusion, Algeria J.P. Lorand a and J.Y. Cottin 2 1 Laboratoire...olivine orthocumulates from the Western Laouni intrusion (Southern Hoggar, Algeria) contains inclusions...igneous complexes of continental area (Bushveld, South Africa; Muskox, Canada and Stillwater, USA). In the...Bushveld complex is included in chromite from the Muskox intrusion (Irvine 1975), while phlogopite inclusions...and Von Gruenewaldt 1985). The Western Laouni intrusion provides the opportunity to assess these models |  | | Journal (article/letter/editorial) | | awaruite) and by secondary sulfides (digenite, valleriite). Consequently, the intergranular assemblages...exhibiting optical properties identical to those of valleriite except for higher reflectivity. Microprobe analyses...oxidation of Cu-Fe-Ni-S minerals. Digenite and valleriite occur in trace amounts in most of the partly...replacement product of native copper, whereas valleriite is intergrown with serpentine veinlets as well...by Eckstrand (1975) in the Dumont ser-pentinite, Canada. Formation of digenite, vallel-iite and secondary |
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