 | White, L. F., Kizovski, T. V., Tait, K. T., Langelier, B., Gordon, L. M., Harlov, D., Norberg, N. (2018) Nanoscale chemical characterisation of phase separation, solid state transformation, and recrystallization in feldspar and maskelynite using atom probe tomography. Contributions to Mineralogy and Petrology, 173 (10) doi:10.1007/s00410-018-1516-8 | Journal (article/letter/editorial) | | probe tomography (APT) is conducted on Ca-rich (bytownite) and Na-rich (albite) plagioclase reference materials...plagioclase reference materials (Amelia albite and Stillwater bytownite) appear chemically homogenous, and yield...Pacific Northwest National Laboratory, Richland, WA, USA 5 GeoForschungsZentrum Potsdam Telegrafenberg,...Sanidine 37 Anorthoclase Oligoclase Labradorite Bytownite Andesine 10 id San Fractures Planar Elements...descriptions Stillwater bytownite Sampled from the ~ 2.7 Ga Stillwater cumulate complex in Montana, USA (Premo |  | Rifai, Kheireddine, Özcan, Lütfü-Çelebi, Doucet, François R., Rhoderick, Kyle, Vidal, François (2020) Ultrafast Elemental Mapping of Platinum Group Elements and Mineral Identification in Platinum-Palladium Ore Using Laser Induced Breakdown Spectroscopy. Minerals, 10 (3) 207 doi:10.3390/min10030207 | Journal (article/letter/editorial) | | Drilling, 2990 N Townsend Ave, Montrose, CO 81401, USA; krhoderick@firstdrilling.com (K.R.); vidal@emt.inrs...drill cores collected from a platinum/palladium mine using laser-induced breakdown spectroscopy (LIBS)...minerals in core samples from a palladium/platinum mine in the western United States. Its purpose is to...containing palladium and platinum from the Stillwater mine in Montana, USA, was cut and a LIBS scan of 40 mm ×...zone of the Stillwater Igneous Complex, a layer mafic intrusion in Southwestern Montana. There are three |  | Rifai, Kheireddine, Michaud Paradis, Marie-Chloé, Swierczek, Zofia, Doucet, François, Özcan, Lütfü, Fayad, Alejandro, Li, Jing, Vidal, François (2020) Emergences of New Technology for Ultrafast Automated Mineral Phase Identification and Quantitative Analysis Using the CORIOSITY Laser-Induced Breakdown Spectroscopy (LIBS) System. Minerals, 10 (10) 918 doi:10.3390/min10100918 | Journal (article/letter/editorial) | | this study were collected at the Stillwater platinum group element mine in the United States. The data...in the present study come from the Stillwater Complex, Montana (USA). The USGS organization recently published...drill cores from the South African Merensky Reef mine [7]. In this work, LIBS analyses were performed... LIBS emerges as an ideal sensing technique for mine site applications. Additionally, since the instruments...out on drill core fragments from the PGE Stillwater mine in USA [23]. The main objective of that study |  | | Journal (article/letter/editorial) | | plagioclase is represented by labradorite and bytownite with an anorthite component varying from An63...Norite of the neighboring Nud–Poaz massif contains bytownite with an anorthite component varying from An71...intrusion, basic rock, plagioclase, labradorite, bytownite DOI: 10.1134/S1075701518080081 INTRODUCTION The...Na2O K2O (1–5) bytownite from norite of Nud–Poaz massif; (6–10) labradorite and bytownite from gabbronorite...Vurechuaivench massif; (11–16) labradorite and bytownite from gabbronorite in medium part of Vurechuaivench |  | | Report (volume) | | Mafic-Ultramafic Layered Intrusion at Iron Mountain Fremont County Colorado GEOLOGICAL SURVEY BULLETIN 1251-A ... Mafic-Ultramafic Layered Intrusion at Iron Mountain Fremont County Colorado By DANIEL R. SHAWE and RAYMOND L. PARKER...mafic-ultramafic layered intrusion at Iron Mountain, Fremont County, Colo____- ________ In pocket 1. Geologic map of...of closely packed plagioclase crystals (sodic bytownite) in gabbro of the layered series_____________...MAFIC-ULTRAMAFIC LAYERED INTRUSION AT IRON MOUNTAIN, FREMONT COUNTY, COLORADO By DANIEL R. SHAWE and RAYMOND L. PARKER |  | Paradis, Marie-Chloé Michaud, Doucet, François R., Rifai, Kheireddine, Özcan, Lütfü Ç., Azami, Nawfel, Vidal, François (2021) ECORE: A New Fast Automated Quantitative Mineral and Elemental Core Scanner. Minerals, 11 (8) 859 doi:10.3390/min11080859 | Journal (article/letter/editorial) | | were cut from PGE-bearing drill cores (Stillwater mine, Nye, MT, USA) and then analyzed first using a scanning...mineral mapping on two PGE-bearing rocks (Lac des Iles mine, Thunder Bay, ON, Canada) [20]. The results were...map of a full core tray from the Stillwater Mine, Billings, MT, USA. This manuscript reports for the...map of a full core tray from the Stillwater Mine, Billings, MT, USA. This manuscript reports for the...majorofmineral phase of bytownite zoisite (Ca Al3 (SiO4(Ca )3 (OH)) from the major mineral bytownite ((Ca,Na)(Si |  | | Report (issue) | | Bytownite Na0:3¡0:1 Ca0:7¡0:9 Al1:7¡1:9 Si2:3¡2:1 O8 c 2001 Mineral Data Publishing, version 1.2 ° ...178 b = 12.870 X-ray Powder Pattern: Rustenburg mine, Transvaal, South Africa. 3.20 (100), 4.03 (80)...12 Total 99.95 100.00 100.00 (1) Rustenburg mine, Transvaal, South Africa. (2) Na0:30 Ca0:70 Al1:70...Transvaal, South Africa. In the USA, in the Stillwater complex, Montana; from Cornwall, Lebanon Co., and...near Lakeview, Lake Co., Oregon; in the Lucky Cuss mine, Tombstone, Cochise Co., Arizona; and from the Grants |  | | Journal (article/letter/editorial) | | chemically zoned plagioclasecrystals reported in the Stillwater, Skaergaard,and Kiglapait intrusions. The cooling...difference between the interdiffusion coefficientsfor bytownite (dry, I atm) and peristerite (HrO present, 1500...independent methods. ExpnnnrnNTAL PRoCEDURE The bytownite used for this study is from the same Fig. L TEM...TEM bright-field photomicrographs of Stillwater bysampleusedby Grove et al. (198a)and is from the Stilltownite...strong diffraction contrast water igneous complex, Montana. The sample contains of (03T) Huttenlocher lamellae |  | | Journal (article/letter/editorial) | | histoties typical of large mahc intrusions (e.g. the Stillwater) am slow, begin at high initial temperatures...characteristic of large layered intrusions (e.g., the Stillwater layered intrusion, HESS, 1960; MCCALLUMd al....anorthositic norite collected from the Stillwater Igneous Complex, Montana. The sample was obtained from the...melting of mineral inclusions in the plagioclase. Stillwater bytownites contain abundant submicroscopic textures...the lamellae are -Annr,s labtadorite and Akw bytownite (NORD et 01.. 1974; GROVE ef al., 1983). Diffraction |  | | Journal (article/letter/editorial) | | desine in granite, labradorite in norite, and bytownite in anorthosite. Fourlings and chainforming repeated...East Greenland and recently observedalso in the Stillwater layered intrusion. Introduction In his review...5766 from biotite-bearing qtuartznorite, Murray Mine, Sudbury, Canada, sample G.4. The plagioclasesof...population----a condition not included in the Stillwater layered intrusion disclosedthe presenceof old...conditions of symneproven by U-stage methods in bytownite An g2 from try between two or more identical crystals |  | | Journal (article/letter/editorial) | | phase. Composition of the plagioclase ranges from bytownite to labradorite (Ans0 to An51) becoming poorer...rare features. The compositional range is from bytownite to andesine and in general the more albitic plagioclase...intrusions, as shown in the Bushveld, Skaergaard and Stillwater Complexes (e.g. Wager and Brown, 1968). The compositional...the gabbroic or noritic parts of the Bushveld, Stillwater and Skaergaard Complexes. In the Bushveld Complex...Skaergaard by the Lower and Main Zones and in Stillwater by the Anorthositic Zone, and up to the Upper |  | | Journal (article/letter/editorial) | | observations of a new type of satellite in Stillwater bytownite ('h' satellites) which are due to fine lamellar...b Labradorite An 66 ("b" plagioclase from Lake County, c.f., Tagai et al. 1980). Units A and B are indicated...layered intrusions. Medium cooling rates SW-8 78 Stillwater, Mo., upper anorthosite zone Large zig-zag b...two types of satellites (e and h) SW-5 72 Stillwater, chromite zone Similar to SW-8 SK475 66 Skaergaard...particularly the Huttenlocher gap in An 70-90 bytownite and the Boggild gap in An 35-65 andesine-labradorite |  | | Journal (article/letter/editorial) | | Hydrothermal Alteration in the Main Sulfide Zone at Unki Mine, Shurugwi Subchamber of the Great Dyke, Zimbabwe:...Old Main, 1 University Dr., Pembroke, NC 28372, USA; chaumba@uncp.edu Received: 24 May 2017; Accepted:...silicate composition study across the MSZ at Unki Mine in the Shurugwi Subchamber was conducted to help...the mineralization. The PGE-enriched zone at Unki Mine is a ~10 m thick package of rocks ranging from gabbronorites...of sulfide mineralization likely occurred at Unki Mine with primary sulfides occurring in association with |  | | Journal (article/letter/editorial) | | 1977 Structural Characterization of Labradorite-Bytownite Plagioclase from Volcanic, Plutonic and Metamorphic...20 Oxford Street, Cambridge, Massachusetts 02138, USA Abstract. The transmission electron microscope and...York, Stony Brook, New York 11794, USA * 274 T.L. Grove in bytownite and Nissen (1968) identified the...composition characterization for labradorite-bytownite plagioclase. 1.2. Method of Study Specimens... Structural Characterization of Labradorite-Bytownite Plagioclase 277 12001 1000 '-"":"": 8OO ":' |  | | Journal (article/letter/editorial) | | l l e y ( 1 4 ) ; b : bytownite, Crystal Bay (8); c: labradorite, Lake County (7); d: l a b r a d o r...reflectionseither together with or without b reflections.Lake County labradorite (7) has been described as "body-centered"...et al.,1977). The sameis true for Crystal Bay bytownite (Fig. 4a), which has never been associatedwith...fa.l 1q64 H. R. Wenk (1978) An 66 Plush, Lake County, 0regon VoIcanic, basalt phenocrysts in Stewart...Volcanic, dike An 89 #332 StiLlwater, Igneous, gabbro from basal zone of Stillwater complex H. R. Wenkand |  | | Report (issue) | | Geological Society of America Memoir 80 STILLWATER IGNEOUS COMPLEX, MONTANA A QUANTITATIVE MINERALOGICAL STUDY...Edward Sampson began the study of the Stillwater complex, Montana, in 1930. The writer commenced a detailed...Igneous and tectonic structures of the Stillwater Complex, Montana, by W. R. Jones, J. W. Peoples, and A...MINERALOGICAL AND CHEMICAL COMPOSITION OF THE STILLWATER COMPLEX AND) TTS: SUBDIVISIONS cake cht rosy...einai ean aa args ee id ten eee eo a GHAETER) Vile MINE RAT] VARTA TION © UIR-VIES apetenareae telelgtr |  | | Journal (article/letter/editorial) | | stratiform sheets such as the Bushveld, Duluth, and Stillwater have in common, and the necessity for providing...for exampre the Duluth, I to 9 miles thick; the Stillwater, 3 miles with the top not shown; the Bushveld...of phenocryst (297d has the composition of a bytownite anorthosite, the crystalline groundmass (59/)...in all three as at Split Rock in the Adriondacks; Mine Hill, R. L; Kusa, U.S.S.R.; and Susimiiki, Finland...PYROXNITE (a) Bronzitite, Bushveld (a) Bronzitite, Stillwater I -t vp-8 43 vp-1.94 vl-1.73 Vv4.62 V s- |  | | Journal (article/letter/editorial) | | 94720-4767, USA Berkeley Geochronology Center, 2455 Ridge Road, Berkeley, CA 94709, USA Received 31 May...Laboratory, 7000 East Avenue, Livermore, CA 94550, USA. E-mail addresses: cassata2@llnl.gov (W.S. Cassata)...Huttenlocher 70 labradorite 90 P1 200 An bytownite anorthite Fig. 1. Phase diagram for alkali and...pegmatite in Benson Mines near Star Lake, New York, USA (Foland, 1974). Benson Mines orthoclase was described...Crater (ECC) in Lunar Craters Volcanic Field, Nevada, USA (Righter and Carmichael, 1993). ECC anorthoclase |  | | Journal (article/letter/editorial) | | TEM observationsof coexisting andesine(An3e)and bytownite (Anes);and (c) TEM and crystallographicstudiesof...rangeof bulk compositionAna6Ane6 by nucleation f bytownite assemblage shouldproducean equilibriumoligoclase/andesine...(Crawford, 1966;Evans, 1964). Coexistingandesineand bytownite have been reported in carbonate rocks near Sidney...535ot20oC(Spear,1980,1981). The coexisting andesine * bytownite from Thetford, Vermont, is particularly important... At Thetford, coexisting andesine (Anrs) and bytownite (Anrr) occur with amphibole of a unique composition |  | | Journal (article/letter/editorial) | | ABSTRACT The UG2 chromitite at Two Rivers Platinum Mine (eastern limb, Bushveld Complex) is fully enclosed...its stratiform pegmatoids, at Two Rivers Platinum Mine, and discussing models for their petrogenesis. Geological...study spans the length of the Two Rivers Platinum Mine lease area (Figure 1, Two Rivers from hereon), which...Layered Suite and (c’) outline of the Two Rivers mine lease area with the sampled diamond drill holes...that were logged and sampled at Two Rivers Platinum Mine and which were selected out of ~150 borehole descriptions |  | | Journal (article/letter/editorial) | | integral part of the basement gneisses. These are bytownite anorthosites and are characteristically associated...rocks. The plagioclase varies from andesine to bytownite. BOULANGERstresses the probable duality of origins...Stratified Anorthosite North America Stillwater igneous complex, Montana (HEss, 1960) Wichita Mountains, Oklahoma...anorthosites occur in rocks of any age from Precambrian (Stillwater) to Tertiary (Scottish igneous province). Form...WIzsoN, 1956, p. 289---297) as for example the Stillwater, Duluth, Bushveld and Freetown complexes. Anorthositie |  | | Journal (article/letter/editorial) | | and from one sample of anorthosite from the Stillwater Complex. Three of the Greenhills samples are...) 0 .7 5 Source oJ plogioclase anorthosite, Stillwater complex layered series eucrite, Greenhills layered...el a\,.,1963) The calculated powder data for bytownite given by Borg and Smith (1968) difier appreciably...superior they were used to calculate 7* for the Stillwater specimen. The standard deviation of 7* is less...at., (1965) Locations marked "x" refer to the stillwater plagioclase and the four plagioclasesfrom Greenhills |  | | Journal (article/letter/editorial) | | standards a mixture of silica glass, olivine and bytownite in equal proportions was prepared. Each of these...Karpiill, Mantyharju, Finland . . . . . . Blackdonald Mine, Renfrew Co., Ontario . . 0.028 - Otides and Xydrated...Slate Creighton Mine, Sudbury, Ontario . Creighton Mine, Sudbury, Ontario . Beck Mine, Pitklranta, K.F...Rifkol, W. Greenland . . . . . . . . Stillwater Complex, Montana . . . s . Ojamo, Lohja, Finland . . ...Calcic Plagiocla.80 s9 s 10 Calcic Plagioclase Bytownite S 181 Albite s 40 Cleavelandite S 98 S 126 Amazonite |  | | Report (issue) | | Geology of North Snowy Block, Beartooth Mountains, Montana ROL LAND R . REID University of Idaho Moscow...W ILLIA.i\1 J. M cMA1'!Nls Montana State University Bozeman, Montana 59715 JOHN C. P ALMQUIST Lawrence...Endowment and Research Foundation, Montana State University, Bozeman, Montana, for administering the grant...thanks. The contributions of Charles C. Bradley, Montana State University, who worked with us through the...in all areas of basement rocks of southwestern Montana, generally indicate a predominantly igneous mode |  | | Journal (article/letter/editorial) | | precipitate minerals, chromite, bronzite, and bytownite nucleated in this order which is probably dependent...passing upwards into bronzitite and ending with a bytownite-rich rock is the result of these crystals accumulating...as the Skaergaard in East Greenland, the Stillwater in Montana, and the Bushveld in South Africa, the dominant...layered intrusions like the chromite-bronzite-bytownite unit of the Bushveld complex, successive injections...precipitate minerals, chromite, bronzite, and bytownite nucleated in this order which is probably dependent |
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