 | Kramers, Jan, Frei, Robert, Newville, Matthew, Kober, Bernd, Villa, Igor (2009) On the valency state of radiogenic lead in zircon and its consequences. Chemical Geology, 261 (1) 4-11 doi:10.1016/j.chemgeo.2008.09.010 | Journal (article/letter/editorial) | | Chicago, Building 434 B, 9700 South Cass Ave., Argonne, IL 60439, USA d Institut für Umweltgeochemie...applied to Pb/Pb dating of titanite, rutile, staurolite and even orthopyroxene and sillimanite in Archaean...leaching on a gem-quality, 1 Ga old titanite from Otter Lake, Canada. Leach fractions of fragments of this...as 7 Fig. 3. Pb LIII-edge XANES data of the Otter Lake titanite (diamonds) and an alpine titanite (squares)...for PbO and PbO2 shown for reference. The Pb of Otter Lake, the subject of stepwise Pb leaching experiments |  | | Journal (article/letter/editorial) | | mineral equilibria in Grenville gneisses of the Otter lake area, Quebec RALPH KRETZ Ottawa-Carleton Ceoscience...sillimanite or hornblende, are widespread within the Otter Lake terrain, a portion of the Grenville Province...sensitive to changes in pressure. h i s s e s from Otter Lake provide an opportunity to examine the following... equilibrium III. GEOLOGY The Fort Coulonge/Otter Lake/Kazabazua area straddles two major domains within...Rovincc) of the Canadian Shield, covered to the south by Palaeozoic sedimentary strata Area to north and |  | | Journal (article/letter/editorial) | | to evolution of the Trans-Hudson orogen to the south, and by ~1.82 Ga southwest-directed thrusting within...that had been previously defined on the basis of staurolite-bearing assemblages in the Kisseynew gneiss belt...conditions across this region, and suggest that staurolite stability is maximized owing to muscovite-free...is present in this region, the occurrence of staurolite being controlled by differences in bulk composition...Geoscience Section Ontario Geological Survey 933 Ramsey Lake Road Sudbury, Ontario P3E 6B5 It is my turn to |  | | Report (issue) | | Ontario Ottawa to Renfrew area – Highway 17 road log South March feldspar mine March mica mine Humphreys feldspar...mine Radenhurst and Caldwell mine Virgin (Dempseys) Lake celestine mine Tatlock Angelstone quarry Tatlock...Mayo marble quarry Renfrew–Madawaska area Renfrew County Road 4 (Bruce Avenue) roadcut Highway 60 quarry...Meany mine Smart mine Turners Island mine Kuehl Lake occurrence Quadeville East mine Quadeville West...Deady mine Bambrick mine Five Mile mine Spectacle Lake (Lake) mine Plexman mine Davis mine Madawaska River |  | Frei, R., Villa, I.M., Nägler, Th.F., Kramers, J.D., Przybylowicz, W.J., Prozesky, V.M., Hofmann, B.A., Kamber, B.S. (1997) Single mineral dating by the PbPb step-leaching method: Assessing the mechanisms. Geochimica et Cosmochimica Acta, 61 (2) 393-414 doi:10.1016/s0016-7037(96)00343-2 | Journal (article/letter/editorial) | | Switzerland 2National Accelerator Centre, Faure 7131, South Africa 3Naturhistorisches Museum, Bernastrasse 15...obtained by utilizing this technique, e.g., for staurolite (Frei et al., 1995), orthopyroxene (Kamber et...uranogenic Table 1. Experiments performed on the Otter titanite. Sub-sample Code Experiments A A1 B1...isotope data of leach experiments on titanite from Otter Lake. Sample Code Leach time 2 ° 6 P b / _+2tr...7.7 1.1 29.2 49.5 15.5 4.6 Initial test Otter E mix* Otter E HBr* E1 E1 10' 3h 201 2461 1.2 11 |  | | Journal (article/letter/editorial) | | component, meta-arkoses, of the overlying McLennan Lake n belt, have distinctly high K O and SiO contents...uniformly low e values (−0.8 to +0.2). The MacLean Lake belt is comprised of a variety Nd of metasedimentary...The predominant lithological unit in the MacLean Lake belt, the psammitic gneisses, is geochemically more...The mafic psammitic gneiss samples in the MacLean Lake belt and the metasedimentary rocks in the Central...felsic psammitic gneisses are similar to the McLennan Lake meta-arkoses. Geochemical data, combined with lithological |  | | Journal (article/letter/editorial) | | State University, Ogontz Campus, Abington, PA 19001, USA Editorial responsibility: K. Hodges The pelitic...this study is the ubiquitous presence of garnet south and east of the garnet isograd regardless of metamorphic...metamorphic grade and in growth-zoned garnets from staurolite-grade schists near the Doe Run window (Fig. 1)...after dehydration melting of muscovite. Because staurolite was eliminated from the Wissahickon Group before...all samples would have been consistent with the staurolite grade of the rocks and there would be no need |  | | Journal (article/letter/editorial) | | to investigate the effects of acid deposition on lake acidification (April and Newton, 1985). As part... 1•• Figure I. Location of Regional Integrated Lake-Watershed Acidification Study (RILWAS) sites in...the Adirondacks. Lake Amold Little Echo Pond Heart Lake Clear Pond Bames Lake 40.2 2.5 19.5 11...Hypersthene Hornblende Garnet Opaques Tourmaline Zircon Staurolite Rock fragments Unknown Enstatite Hematite Epidote...Apatite Augite Others 1.2 Granitic gneiss Otter Lake Garnetiferous granitic gneiss of the watersheds |  | | Journal (article/letter/editorial) | | Geophysical Sciences,University of Chicago, 5734 South Ellis Avenue, Chicago,Illinois 60637-1434,U.S.A...JamesFranck Institute, University of Chicago, 5640 South Ellis Avenue, Chicago,Illinois 60637-1434,U.S.A...well-characteized,granulite faciesarea in southwestern North Carolina, indicates internal consistency for two-pyroxene-garnet...reactions, produced calculated pressuresfrom the Otter Lake, Quebec region which ranged from zero to negative...one-pyroxene-garnetgranulites, southwest North Carolina GADS GAPES Sample FQ42E.AA wB1866E-A WB1866E-F |  | | Journal (article/letter/editorial) | | fabrics in these rocks were developed during north-south folding (Dl), thrusting (D2)and shearing (D3)deformation...juxtaposition with the Kenticha sequence along a north-south trending thrust at the present crustal level during...Yihunie, 2002a) indicated the presence of a north-south metamorphic zonation. Particular findings are (i)...(i) the occurrence of garnet and staurolite in the Kenticha and Megado sequences, (ii) the occurrence...Worku, 1996; Yihunie and Tesfaye, 1998). The north-south variations in occurrence of these minerals in the |  | | Catalog/List | | radial groups on limonile ........... Utah Toelle County, Gold Hill, Gold Hill mine ~ransparent micro crystals...lapis AJOITE Copper aluminum silicate Arizona Pima County, Ajo, New Cornelia mine Sky blue micro xls and...cerium aluminum silicate California Los Angeles County, Pacoirna Canyon Large black tabular crystals in...basic sulfate of aluminum and potassium Utah .Piute County, Tushar Mountains, Marysvale ----i'>ink crystalline...crystal vugs ALTAITE Lead telluride Colorado Saguache County, Klondike mine Cleavage plates in quartz with pyrite |  | | Journal (issue) | | MINE, LISBON, N . H . By Harold / . V errow 136 SOUTH CAROLINA'S MILLSTONE GERMAN ......................to tell us something about an old mine in North Carolina that had been reopened not so long ago and which...was busily registering, Harold C. Buckelew, of South Orange, N. J., "sneaked" past him and thus . achieved...some-· thing to crow about. The locality is Kern County, Calif. Apatite: This calcium phosphate is always...Bluish crystals on white natrolite from San Benito County, Calif., is one of the many minerals that has made |  | | Book (edition) | | MARIN COUNTY FREE LIBRARY 3 1111 00289 4184 \ I s Fifth Revised Edition A complete, state-by-state...Colorado; and Professor Jack Hanahan of Belmont, North Carolina, with locations in their respective states. ...California and the Sonoran desert of Arizona, the lake beaches of the Middle West, the broad plains and...basketful in Maine and California; emerald in North Carolina, a big diamond or two in Arkansas, opal in Idaho...lost some of its high status when the abundant South American supply came on the market. Promotion of |  | | Catalog/List | | SiO F 7fJ 7 ■ AJOITE Christmas Mine, Gila County, Arizona USA Blue veinlets in matrix some with micro botryoidal...£12 7.x2 £24 Hydrocarbon 963 6 ✓ ALBITE Maine USA variety CLEAVELANDITE, pure white sheafy, masses...F OH 2x2 £10 -------------------------Keystone, South Dakota U.S.A. 16 AMBLYGONITE Pure grey cleavable...LiNaAIP0/4FOH 1098 ANALCITE Bratthagen, near Larvik South Norway Unusual rich yellow vitreous mass in Syenite...feldspar 37 ANCYLITE Ce Dark Star Mine,Ravalli County, Montana U.S.A Rich pinkish fine grained mass in |  | | Catalog/List | | Mine near Arendal ,Norway 87 ■ BERYL Evje area . South Norway Rich fine grained solid grain-like red-brown...- -1111 ALMANDINE Epteland, Evje-lveland area, South Norway 164 BERYL Kolsva, Vastmanland Sweden Rich...ANALCITE Bratthagen, near Larvik South Norway 1086 CALCITE Landsverk, Evje, South Norway Unusual rich yellow...··•··· --- -- . 168 ANORTHOCLASE Ula, near Larvik, South Norway 129 CHROMITE Kemi Finland Feldspar group...-···-· --- - - - - - - ·- · Galteland, Evjc area, South Norway 1068 CHRYSOBERYL Lnuvland, lvcland,Norway |  | | Catalog/List | | Al SO/4 767 ■ AJOITE Christmas Mine, Gila County, Arizona USA 14 ALUMINITE Railway cutting near Creston...Lepidocrocite. 3mm £3 FeO"OH Cl 69 ALUMOHYDROCALCITE South Bay, Scarborough Yorkshire A rare British mineral...Kragero Norway 1098 ANAL CITE Bratthagen, near Larvik South Norway · Rich orange-red masses with darker Hornblende...£3 2x2 £4.50 2x3 £6.50 Feldspar 963 ALBITE Maine USA 811 ANATASE Tysse, Hardanger,Norway variety CLEA...lll l ALMANDINE . ~ptel and, Evje-l~eland area, South Norway Quite rich pink masses with quartz and or |  | | Catalog/List | | Ojuela Mine, Mapimi, Mexico 69 ALUMOHYDROCALCITE South Bay, Scarborough Yorkshire Colourless to yellow...Quebec, Can 1098 ANALCITE Bratthagen, near Larvik South Norway Rich fibrous pale grey-brown mass. Unusual...- - · . 767 AJOITE Christmas Mine, Gila County, Arizona USA 17 ANAL CITE Talisker Bay, Skye, Scotland...ANCYLITE Ce Dark Star Mine.Ravalli County. Montana U.S.A 963 ALBITE Maine USA Rich pinkish line grained mass...France 1111 ALMANDINE Eptelnnd, Evje-lvelnnd area, South Norway White phcnocrysts at lens! 5mm size richly |  | | Book | | HfiRIN COUNTY FREE LIBRfiRY 311110G386652Q I V Russell P MacFal A COLOR TREASUF FOR COLLECTORS...to Hunting Locations ? i 9 GIVEN TO THE MARIN COUNTY LIBRARY BY MARI N L MTNF.RAT. SOCTETY DAVID...may be able to buy specimens. map of Keweenaw County. Mich- Part of the U.S. Geological Survey topographic...obtainable under the Be sure flap closure. to lake along a stout cord: before descending a steep...to a pocket of crystals. North Carolina and the Black Hills of South Dakota are also regions attractive |  | | Report (Issue volume) | | with magnetite from iron formation near Timagami Lake, Ontario. Mineral specimens illustrated in the...exposures along cliffs and along the shores of sea, lake and stream; land-slide areas in the mountains; and...Dryden 27. Drag Lake Minnitaki Lake 28. Gooderham-Tory Hill Atikokan 29. Wilberforce Jasper Lake 30. Bancroft...Mountain-Rabbit 32. Craigmont- Lake Clear Mountain -33. Renfrew Thunder Bay - 34. Galetta Lake Nipigon 35. Blue Mountain...Fernleigh-Clarendon Michipicoten - 39. Perth Agawa Bay 40. Sharbot Lake-Kingston Mamainse-Batchawana 41. Lyndhurst-Morton |  | | Book | | to granite but with no quartz. Sandstone (South Dakota, USA) _9_ A darker rock than granite but with...of a number of interesting minerals. Garnet, staurolite and andalusite are typical minerals of mica schists...Fluorite is a common example. Aragonite (Utah, USA) 27 Crystals Crystal Morphology The term morphology...crystal form. Other crystals Wulfenite (Arizona, USA) 29 may show lesser symmetry on a scale at the...potential for specimen sales. Shale (Pennsylvania, USA) 57 Mineral Descriptions For each species the |  | | Catalog/List | | Africa AMBLYGONITE 1073 Near Chclan, E.Washinglon USA ACTlNOLITE Pure white cleavage mass Green crystal...OH Ixl £3 Ix2 £6 2x2£10 Amphibolc IxI £3 Norway South Larvik near CITE 13ratthagcn, ANAL 1098 Ojucla Mine...feldspar Ix2£ 1.20 Ix I 50p 68 2 963 AI.BITE Maine USA variety CLEA VELANDITE, pure white sheafy, masses...Al Fe SiO 2x2 £12 lx2 £6 Dark Star Mine,Ravalli County, Montana U,S_A ANCYLITE Cc Rich pinkish fine grained...Buskerud,Norway 50 ANDRADlTE Franklin _New Jci.ey USA Rich brown-purple mass in matrix Quite rich orange |  | | Book | | or pass beneath one another (e.g., west coast of South America). rising granitic magma continental crust...its essential P L AT E 5 Kyanite (blue) and Staurolite (brown) in Mica Schist. Monte Campione, Switzerland...conditions of high heat and pressure, kyanite and staurolite are used by geologists to interpret the history...igneous rock, kimberlite (named for Kimberley, South Africa, where diamonds have been mined for over...that garnet inclusions in diamonds from Kimberley, South Africa (and by analogy, the diamonds themselves) | | | Book | | precise maps needed can be cho sen are provided 5 LAKE SUPERIOR .,. #<:, 9 .. ___ _____ ; =~~= 0:;~~~=s--_...·=-'--~c--- TO COPPER HARBOR !ROCK SHOPSl r::::-::, LAKE BAILEY N I DELAWARE MINE DUMPS IOATOUTE CHLORASTROUTEI...topographic map of the Delaware q uadrangle o f Keweenaw County, Michigan This ,s an example o f the more picturesque...to a pocket of crystals. North Carolina and the Black Hills of South Dakota are also regions attractive...an anc ient volcano and crea ted beautiful Crater Lake Such states as Nebraska and Kansas-the Hig h Plains-owe |  | | Journal (article/letter/editorial) | | Sciences, University of New England, Armidale, New South Wales 2351, Australia ABSTRACT Ideas since the...regionally metamorphosed terranes of Broken Hill, New South Wales, the Gorob mine in Namibia, the Aggeneys district...as an example a “typical staurolite-zone pelitic schist from the Whetstone Lake area”, Carmichael estimated...thickness) banded iron formations of Broken Hill, New South Wales, the present writer deduced “... an overall...reductions in mass of 10, 19 and 23 wt.% in garnet, staurolite and kyanite zones, respectively, including average |  | Henriques, S.B.A., Neiva, A.M.R., Tajčmanová, L., Dunning, G.R. (2018) Geochemistry and metamorphism of the Mouriscas Complex, Ossa-Morena/Central Iberian zone boundary, Iberian Massif, Central Portugal: Implications for the Cadomian and Variscan orogenies. Lithos, 296. 496-512 doi:10.1016/j.lithos.2017.11.021 | Journal (article/letter/editorial) | | the south of the area studied in PT present coordinates (i.e., between the Ossa-Morena and South Portuguese...muscovite, biotite, garnet, fibrolitic sillimanite, staurolite, zircon, rutile, ilmenite, apatite, monazite...sillimanite, garnet, 6 ACCEPTED MANUSCRIPT staurolite, biotite, zircon and acicular apatite (Fig. 2d)... quartz, plagioclase, muscovite and biotite. Staurolite occurs dispersed in the matrix and as inclusions...metamorphism (e.g. Jung et al., 2007; Yardley, 1977). Staurolite occurs as dispersed grains and inclusions in |
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