 | | Journal (article/letter/editorial) | | (2006) SAMARSKITE-(Yb): A NEW SPECIES OF THE SAMARSKITE GROUP FROM THE LITTLE PATSY PEGMATITE, JEFFERSON...JEFFERSON COUNTY, COLORADO WILLIAM B. SIMMONS§ Department of Geology and Geophysics, University of New Orleans...70148, USA SARAH L. HANSON Department of Earth Science, Adrian College, Adrian, Michigan 49221, USA ALEXANDER...Louisiana 70148, USA ABSTRACT Samarskite-(Yb) occurs at the Little Patsy NYF-type granitic pegmatite in the South...South Platte district, Jefferson County, Colorado as black, metamict, anhedral masses up to tens of centimeters |  | | Journal (article/letter/editorial) | | 2000 Lakeshore Drive, New Orleans, Louisiana 70148, USA Sarah L. HANSON Geology Department, Adrian College... 110 S. Madison Street, Adrian, Michigan 49221, USA Alexander U. FALSTER and Karen L.WEBBER Department...2000 Lakeshore Drive, New Orleans, Louisiana 70148, USA Abstract Pegmatites enriched in the rare-earth elements...Wisconsin through Colorado to Arizona. Four widely geographically spaced pegmatite districts that are...are compared and contrasted in this study. The pegmatite districts include the circa 1.5 Ga Wausau syenite |  | | Journal (article/letter/editorial) | | looking northwest acro88 the cliff’s of Glen Cove to South Park and the Tarryall Mountains. Researchers have...northeasterly-trending continentul Figure 2. Geologic map of the Colorado Front Range showing the Precambrian metamorphic...1978; Karistrom 1978; Lanthier 1978). Farther south in Colorado, sediments accumulated in decper-water rocks...Survey into “Early, Middle, and Late” Eras. In Colorado we because of the subsequent folding and overthrusting...subduction zone and possibly the creation Era in Colorado and Wyoming of a volcanic island arc. Carpenter |  | | Journal (article/letter/editorial) | | lead. Sixty-four samples from nine worldwide pegmatite localities were quantitatively analyzed to compare...and Florissant, Colorado; the Zapot pegmatite, Mineral County, Nevada; Carroll County, New Hampshire;...Rutherford peg168 ROCKS & MINERALS matites of Amelia County, Virginia; Wisconsin; Tordal, Norway; Russia; and...correlation. Three samples of amazonite from Amelia County, Virginia, repeatedly showed Pb concentration below...below the detection limits. Samples from Amelia County were also analyzed for trace amounts of iron and |  | | Journal (article/letter/editorial) | | and 220Rn emanations from powdered samples of samarskite as a function of annealing temperature Dariusz...thoron (220Rn) were measured from fully metamict samarskite collected from Centennial Cone after 1 h and...reference sample and from the original samarskite sample. Keywords: Samarskite, radon emanations, thoron emanations...222 Rn, 220Rn 222 Introduction Samarskite is a complex Nb-Ta-Ti-REE + Y-Ca-U-Th multiple oxide containing...of 19 samarskite samples after annealing at 800 °C under hydrogen and on analysis of samarskite-(Yb) from |  | Tomašić, Nenad, Gajović, Andreja, Bermanec, Vladimir, Linarić, Maša, Rajić Su, Dangsheng Š koda (2010) Preservation of the samarskite structure in a metamict ABO4 mineral: a key to crystal structure identification. European Journal of Mineralogy, 22 (3) 435-442 doi:10.1127/0935-1221/2010/0022-2032 | Journal (article/letter/editorial) | | Published online April 2010 Preservation of the samarskite structure in a metamict ABO4 mineral: a key to...original samarskite structure were identified in a metamict ABO4 mineral from Beinmyr pegmatite, Norway...of the sample confirmed the affiliation to the samarskite group giving the general formula (REE0.322Ca0...well related to the orthorhombic low-temperature samarskite modification with cell parameters a ¼ 5.68(1)...experimental temperatures. At 800 C a high-temperature samarskite phase (s.g. P2/c) co-crystallised, with an increase |  | Britvin, Sergey N., Pekov, Igor V., Krzhizhanovskaya, Maria G., Agakhanov, Atali A., Ternes, Bernd, Schüller, Willi, Chukanov, Nikita V. (2019) Redefinition and crystal chemistry of samarskite-(Y), YFe3+Nb2O8: cation-ordered niobate structurally related to layered double tungstates. Physics and Chemistry of Minerals, 46 (7) 727-741 doi:10.1007/s00269-019-01034-0 | Journal (article/letter/editorial) | | PAPER Redefinition and crystal chemistry of samarskite‑(Y), YFe3+Nb2O8: cation‑ordered niobate structurally...Germany, part of Springer Nature 2019 Abstract Samarskite-(Y), the mineral known for almost 180 years only...observed [I > 2σ(I)] independent reflections. Samarskite-(Y) is monoclinic, P2/c, a 9.8020(8), b 5.6248(3)...𝛴2.02 O8. Samarskite-(Y) from the type locality, the Blyumovskaya Pit, Ilmeny Mountains, South Urals, Russia...34 Ln0.20 𝛴0.54 U4+ Th Mn Ta Ti O Fe Nb . Samarskite-(Y) is the first example of 0.03 1.14 0.70 0.15 |  | Guastoni, Alessandro, Secco, Luciano, Škoda, Radek, Nestola, Fabrizio, Schiazza, Mariangela, Novák, Milan, Pennacchioni, Giorgio (2019) Non-Metamict Aeschynite-(Y), Polycrase-(Y), and Samarskite-(Y) in NYF Pegmatites from Arvogno, Vigezzo Valley (Central Alps, Italy) Minerals, 9 (5) 313 doi:10.3390/min9050313 | Journal (article/letter/editorial) | | Article Non-Metamict Aeschynite-(Y), Polycrase-(Y), and Samarskite-(Y) in NYF Pegmatites from Arvogno...Alps, Italy, pegmatite dikes are unique in the scenario of a tertiary alpine pegmatite field because...accessory minerals including aeschynite-(Y), polycrase-(Y), and samarskite-(Y). They are associated with additional...minerals such as fluorite, Y-dominant silicates, and xenotime-(Y). The Y–Nb–Ti–Ta AB2 O6 and ABX2 O8...aeschynite-(Y), polycrase-(Y), and samarskite-(Y) by single-crystal X-ray diffraction. Aeschynite-(Y) and polycrase-(Y) |  | Pieczka, Adam, Szuszkiewicz, Adam, Szełęg, Eligiusz, Ilnicki, Sławomir, Nejbert, Krzysztof, Turniak, Krzysztof (2014) SAMARSKITE-GROUP MINERALS AND ALTERATION PRODUCTS: AN EXAMPLE FROM THE JULIANNA PEGMATITIC SYSTEM, PIŁAWA GÓRNA, SW POLAND. The Canadian Mineralogist, 52 (2) 303-319 doi:10.3749/canmin.52.2.303 | Journal (article/letter/editorial) | | 303-319 (2014) DOI : 10.3749/canmin.52.2.303 SAMARSKITE-GROUP MINERALS AND ALTERATION PRODUCTS: AN EXAMPLE... Borna 9, Poland Abstract Ishikawaite and samarskite-(Y) are indicators of an NYF signature in the mildly...zero-valent-dominant pyrochlores and microlites enriched in U+Th, Y+REE, or Ca. Low-temperature hydrothermal fluids were...enrichment in Pb and Bi. Keywords: ishikawaite, samarskite-(Y), pyrochlores, mixed NYF+LCT pegmatites, Piława...Introduction The Samarskite Group Minerals (SGM) are commonly used as indicators of NYF (Nb-Y-F) signature |  | | Journal (article/letter/editorial) | | the actual structure of samarskite-(Y)? A TEM investigation of metamict samarskite from the Garnet Codera...Codera dike pegmatite (Central Italian Alps) Gian Carlo Capitani1,*, Enrico Mugnaioli2, and Alessandro Guastoni3...Codera dike pegmatite (Central Italian Alps). These oxides have compositions in the samarskite-(Y) field and...major substitutions involving (U+Th) with respect to (Y+REE). At the TEM scale, the samples show a continuous...noticeably consisting of relicts of the original samarskite structure, were deeply investigated by electron |  | | Journal (issue) | | in southwestern Fennoscandia: Backdrop to the pegmatite fields of southern Norway……………………………………………………………………………………...paleoclimate controls of lithium-cesium-tantalum (LCT) pegmatite genesis, exhumation, and preservation……………………...rediscovered pegmatite in the Stettin Complex, Wausau Syenite Compley, Marathon County, Wisconsin, USA……………………………………………...REIMER, W. Mineralogical study of the Gonçalo Li-pegmatite deposit, Portugal……………………………………..23 FALSTER,...tz assemblage in the Emmons pegmatite, Greenwood, Oxford Co., Maine, USA: implication for the origin |  | | Journal (issue) | | on Amazonite 7.5 cm, from the Smoky Hawk claim, Colorado. Collected by the Dorris family; Tom Spann photo...weakly in the oxide gangue; in others there are little families of crystals crossing at acute angles,...as if the door to the workshop has been opened a little too soon. Farther back in the channel there are...pocket in 1955 at least 25 others were found as mining progressed. The contents of these, which ranged...the 210-foot level slightly below and along the south side of the main ore zone. The wulfenite in this |  | | Book | | ........................................... 82 South Africa ...... ... ................................is a fue l for reactors to produce electricity, mining operati ons. Robert Lau f presents here a highly...The treatment of historical details makes for highl y classic localities. Uraniun, and Lhorium mineralogy...softvva re, using data files from the Boulder, Colorado; Pau la Piilonen, Candian Museum of An1erican...structures in three dimensions for a richer Mountain Mining; Leonard Himes and Michael Jacob, appreciation |  | | Book (edition) | | Strunz since 1941 (Strunz and Nickel 2001): • Subsidim-y anions (OH,F,O) are positioned before the complex...abbreviations: Rep. (republic), prov. (province), co. (county), munic. (municipio), pref. (prefecture), dept...dept. (departement), dept. (departamento), dist. (district). Less common terms are not abbreviated, e.g....always included in text, except in the cases of the USA, UK, and the provinces Ontario and Quebec in Canada...localities of magmatic origin (in the sequence North and South America and Greenland, then Europe, Asia, Africa |
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