 | | Journal (article/letter/editorial) | | study: the northern Appalachians (Vermont, Maine, New York, USA); North American Cordillera (North Cascades...Cascades Range, Washington; Snake Range, Nevada, USA); western Rocky Mountains (British Columbia, Canada);...University of Minnesota, Minneapolis, MN 55455, USA e-mail: dwhitney@umn.edu are characterized by high-angle...confined to a garnet-bearing schist from SE Vermont, USA. 123 Contrib Mineral Petrol (2010) 160:591ā607...Dutchess County, NY (Gt zone) Core: alm61sps25prp3grs11 Rim: alm77sps10prp6grs8 Dutchess County, NY (St |  | | Journal (article/letter/editorial) | | Austin, 2275 Speedway Stop C9000, Austin, TX 78712, USA (wcarlson@jsg.utexas.edu) 2 Department of Geosciences...4044 Derring Hall (0420), Blacksburg, VA 24061, USA ABSTRACT A dramatic demonstration of the role of...of garnet in pelitic schist exposed at Harpswell Neck, Maine, USA. Many garnet crystals have irregular...metapelitic rocks found at Harpswell Neck, 123 124 W. D. CARLSON ET AL . Maine, USA, were included among...CHEMICAL EQUILIBRIUM IN METAPELITES AT HARPSWELL NECK, MAINE The findings of Carlson (2002) were set |  | | Journal (article/letter/editorial) | | low-pressure metamorphic terrain, Orrs Island-Harpswell Neck, Maine H. M. LANG AND G . R. DUNN' Department of...26506, USA ABSTRACT Poikiloblastic index minerals in pelitic rocks from the O m Island-Harpswell Neck...Neck area of coastal Maine contain inclusion textures that indicate sequential growth of progressively higher...index minerals nucleated and grew sequentially: biotite began to grow before deformation, garnet began...field gradient. Metamorphism in the O m Island-Harpswell Neck area is consistent with the magmatic heating |  | | Report (edition) | | BULLETIN 41 Third Edition A Collector's Guide to Maine Mineral Localities by Woodrow B. 7KaSVRQ Donald...Vandall T. King Robert G. Marvinney, State Geologist Maine Geological Survey Natural Resources Information...OF CONSERVATION 1998 Copyright Ā© 1998 by the Maine Geological Survey, Department of Conservation. All...24 x JO mm;Jrom the Bennett Quarry, Buckfield, Maine. Mined in 1996 by Holden !Jrothers Mining and currently...Photo by John B. Poisson. The laws and policies of Maine and the United States prohibit discrimination in |  | | Journal (article/letter/editorial) | | Austin, 2275 Speedway Stop C9000, Austin, TX 78712, USA *Corresponding author, e-mail: sjmoore@utexas.edu...attempts at such measurements in rocks from Harpswell Neck (USA). The results do not deviate appreciably...the Manhattan schist (Manhattan Island, New York, USA) that deviated from a statistically random distribution...atoll development, rings of garnet nucleated on biotite with (110)grt || (001)bio. Moore et al. (2014)...string of garnet crystals produced in a plagioclaseābiotite reaction texture in an amphibolite-facies pelitic |  | | Journal (article/letter/editorial) | | Diffusion control of garnet growth, Harpswell Neck, Maine, USA F . S. S P E A R 1 . AND C . G . DAN...Rensselaer Polytechnic Institute, Troy, NY 12180, USA (spearf@rpi.edu) 2 Department of Geological Sciences...NJ, USA ABSTRACT A detailed analysis of chemical zoning in two garnet crystals from Harpswell Neck...Neck, Maine, forms the basis of an interpretation of garnet nucleation and growth mechanisms. Garnet apparently...(1998.) described garnet zone samples from Harpswell Neck, Maine, that had apparently undergone progressive |  | | Journal (article/letter/editorial) | | portions of garnet porphyroblasts from Harpswell Neck, Maine, exhibit small discrete regions of high...poikiloblastic spessartine-rich garnet from Harpswell Neck, Maine. In these garnets, three-dimensional maps...hypothesis for garnet crystallization, samples of the Harpswell Neck rocks were collected from locality no. 1...Jewell formation at the southernmost point of the Harpswell Neck peninsula, on its southeast side, and is...are garnet-bearing schists with the assemblage biotite + chlorite + muscovite + quartz + plagioclase + |  | Richards, R. Peter, Žorž, Mirjan, Rakovan, John, Scovil, Jeff, Wight, Quintin, Houran, Jim (2018) Letters. Rocks & Minerals, 93 (6) 495-497 doi:10.1080/00357529.2018.1502578 | Journal (article/letter/editorial) | | specimen that I collected some time ago in Harpswell, Maine. At the time, however, I was unable to put...and found it. It is a flattened almandine in ābiotiteā (black phlogopite). My records indicate that I...form a breakwater next to Estes Lobster House on Harpswell Neck Road. We used to visit Drawings by Mirjan...follows: A 4-mm-diameter flattened almandine in ābiotite.ā Top: Complete specimen, with cut edges. Bottom:...that it came from one of the quarries in Topsham, Maine, the closest pegmatitebearing granite quarries to |  | | Journal (article/letter/editorial) | | garnet, but include two studies of porphyroblastic biotite. The specimens span a wide range of porphyroblast...Facies. Specimens from the garnet zone at Harpswell Neck, Maine (Lang and Dunn 1990) have been recently...places on these observations, namely that the Harpswell Neck garnets have captured a transitional regime... FIGURE 3. Compositional variation for Mn in Harpswell Neck garnet, with interpretation following Hirsch...the lowest temperatures of metamorphism. The Harpswell Neck data suggest that Mn makes the transition |  | | Journal (article/letter/editorial) | | from Mica Creek to over 1100 ppm in garnet from Harpswell Neck, while synthetic garnets can contain Ti in...garnet. Harpswell Neck Sample 96-1 is a garnet-grade schist from the Jewel Formation in Harpswell, Maine...GARNET Figure 7. Garnets in sample 96-1 from Harpswell Neck. (a, b, and c) Garnets exhibit core-rim variations...patterns similar to those expressed in garnet from Harpswell Neck. The garnets have increasing rimward Ca content...content to an abrupt low Ca rim (Fig. 8). Like Harpswell Neck, these garnets are believed to form through |  | | Journal (article/letter/editorial) | | Rensselaer Polytechnic Institute, Troy NY, 12180, USA. email: spearf@rpi.edu Corresponding author: pattison@ucalgary...chlorite -- Tinkham, Zuluaga, and Stowell (2001); biotite ā White, Pomroy, and Powell (2005); plagioclase...reactions using ātc331ā are largely a function of the biotite a--x model of White et al. (2007) that was optimised...chlorite-bearing, biotite-free assemblages at relatively low metamorphic grade, within the regional biotite and garnet...further growth, of biotite from a muscovite+chlorite-bearing precursor assemblage (biotite, garnet or more |  | | Report (issue) | | Clearance Center, 222 Rosewood Drive, Danvers, MA 01923, USA, phone (978) 750-8400, http://www.copyright.com...index. ISBN 0-8137-2331-0 1. Geology, Structural--Maine--Norumbega Fault Zone. 2. Geology, Structural--Appalachian...within the Norumbega fault system in south-central Maine. The thin section is cut parallel to the stretching...Norumbega fault system inte, Casco: Bay are: Coastal Maine xc ie 8 fogs bate Oe eS SL Mark T. Swanson | 2...microstructures along the central Norumbega fault zone, Maine .......... 0060 ccc Mary S. Hubbard and Hui Wang |  | | Book (volume) | | Mineralogy by Vandall T. King and Eugene E. Foord Maine Geological Survey DEPARTMENT OF CONSERVATION Walter...Resources Information, Maine Geological Survey Walter A. Anderson, State Geologist Maine Geological Survey...DEPARTMENT OF CONSERVATION 1994 Copyright Ā©1994 by the Maine Geological Survey, Department of Conservation. All...photograph: Fluorapatite, Pulsifer quarry, Auburn, Maine (2.2 cm specimen), Harvard Mineralogical Museum...Wendell E. Wilson, Ā©1985. The laws and policies of Maine and the United States prohibit discrimination in |  | | Journal (article/letter/editorial) | | 28,45-67 (1993) Terrane sutures in the Maine Appalachians, USA and adjacent areas STEPHEN G. POLLOCK Department...University of Southern Maine, Gorharn, ME 04038, USA Terrane sutures in the Maine Appalachians and adjacent...Devonian plutons. Not all faults in south-westem Maine are related to the suture. Younger dip and/or strike-slip...modified by younger deformational events. Within the Maine Appalachians three large composite suspect terranes...discontinuously crop out for substantial distances within the Maine and Canadian Appalachians in approximately the same |  | | Journal (article/letter/editorial) | | investigated garnets from pelitic schists from Harpswell Neck, Maine. In both studies, fractional crystallisation...a garnet crystal from Pecuris Range, New Mexico, USA (redrawn after Chernoļ¬ and Carlson 1997). Note the... WV 0 0 0 0 0 0 Biotite Endmembers: Phlogopite, Eastonite, Annite, ordered Biotite Ideal 3-site-mixing...Phlogopiteāo-Biotite 112 3000 AnniteāEastonite 112 1000 Anniteāo-Biotite 112 6000 Eastoniteāo-Biotite 112 10000...Rumble D (1996) Constraint on the time scale of biotite-grade metamorphism during Acadian orogeny from |  | | Journal (article/letter/editorial) | | Cambridge, Massachusetts 02138 MAINE Minerals of the Topsham, Maine, Pegmatite District Topsham ā¢ ...AndrosĀ coggin River from Brunswick in Sagadahoc County. A mile-wide belt of granitic pegmatites runs from...Mineral Resources Index No. I (Rand, 1957) and Maine Mines and Minerals, a field guide by Phillip Morrill...(1958). Mining History Feldspar mining began in Maine at Topsham in the midĀ dle of the nineteenth century...y " Brookes finding chrysoberyl in 1935, and a Maine Mineralogical and GeoĀ logical Society field trip |  | | Journal (article/letter/editorial) | | Rensselaer Polytechnic Institute, Troy, NY 12180 USA (spearf@rpi.edu) ABSTRACT Cathodoluminescence (CL)...Center, 1 Research Circle, Niskayuna, NY 12309, USA 2009 Blackwell Publishing Ltd et al., 2001; Landtwing...the grain. Although there are too few data Harpswell Neck, ME Eastern VT Western NH Eastern VT ...chlorite + biotite + muscovite + quartz + plagioclase + ilmenite + rutile Garnet + chlorite + biotite + muscovite...plagioclase + ilmenite + rutile Garnet + chlorite + biotite + muscovite + quartz + plagioclase + ilmenite + |  | | Journal (article/letter/editorial) | | University of Minnesota, Minneapolis MN 55455, USA, (email: whitn008@tc.umn.edu) and 2 Department of...of Geology, Miami University, Oxford OH 45056, USA ABSTRACT Ductilely deformed veins consisting of quartz+andalusite...lineation defined by sillimanite and stretched biotite. Aluminosilicate-bearing boudins record top-to-the-east...lineation defined by sillimanite and stretched biotite. Boudins record topto-the east shear sense, which...aluminosilicate-bearing veins occur in garnetā sillimaniteābiotite schist of the GuĢmuĢsĢ§ler Formation. In the outcrop |  | | Journal (article/letter/editorial) | | porphyroblasts were examined from garnet + staurolite + biotite + muscovite Ā± kyanite grade rocks (Zone I of Tracy...ilmenite, and graphite and the matrix consists of biotite, muscovite, quartz, kyanite, plagioclase, and ilmenite...vertical thin sections. The matrix composed of biotite, muscovite, plagioclase and quartz. Fig. 4. Compositional...trails are truncated by matrix foliation defined by biotite, muscovite, plagioclase, ilmenite and quartz. 5...Retrogressive dissolution of garnet: effect of garnetābiotite geothermometry. Geology 16, 875ā877. Florence, |  | | Journal (article/letter/editorial) | | facies and contains quartz, muscovite, garnet, biotite, calcite, ilmenite, and trace epidote. Grain sizes...form density bands. Almandine-rich garnet and biotite are present as porphyroblastic phases with the...porphyroblasts are visible in the photomicrographs. Some biotite porphyroblasts have inclusion trails defined by...Inclusions (mm) Garnet* 1.0ā4.0 not applicable Biotite* 0.2ā0.6 not applicable Quartz 0.060ā0.150 <0.100...relatively low attenuation value of quartz (Fig. 4c). Biotite porphyroblasts with fine graphitic inclusion trails |  | | Journal (article/letter/editorial) | | near the garnet isograd found in southwestern Maine (e.g., Spear and Daniel, 2001). Note that zoisite...Mineral cm3/mol Mode/mmola Quartz Muscovite Biotite Chlorite Garnet Plagioclase Apatite Monazite Xenotime...xenotime (+ quartz + plagioclase + muscovite + biotite + H2O) and garnet + chlorite + xenotime. Xenotime...the assemblage garnet + chlorite + muscovite + biotite + quartz + plagioclase + apatite +monazite+ ļ¬uid...conditions of the lower garnet zone in southwestern Maine where garnet with spessartine contents of 35% are |  | | Journal (article/letter/editorial) | | zone, the garnet zone, the albite-biotite zone, and the oligoclase-biotite zone (Higashino, 1990). Average...around 0.9ā1.1 GPa for the albite-biotite zone and the oligoclase-biotite zone, respectively (Enami, 1983;...estimated the prograde PāT path of the albite-biotite zone pelitic schists, based on the chemical zoning...Petrology of pelitic schists in the oligoclase-biotite zone of the Sanbagawa metamorphic terrain, Japan:...Mineral Petrol 126: 137ā151 Higashino T (1975) Biotite zone of Sanbagawa metamorphic terrain in the Siragayama |  | | Journal (article/letter/editorial) | | University of Minnesota, Minneapolis, MN 55455, USA (dwhitney@umn.edu) 2 Department of Geological Sciences...Sciences, University of Texas, Austin, TX 78712, USA 3 Geologisches Institut, ETH-Zentrum, CH-8092 ZuĢrich...orientations. The garnet mica schist of Townshend Dam, VT, USA, was selected for a study of garnet microstructures...amphibolite facies schists from Townshend Dam, VT, USA, of the New England Appalachian mountain range (Fig...concentrations in garnet, muscovite, paragonite, biotite and plagioclase were obtained with a JEOL 8900 |  | | Journal (article/letter/editorial) | | distinguished on the basis of the index minerals chlorite, biotite, andalusite and sillimanite. Guitard (1970) further...A wide range of mineral assemblages involving biotite, muscovite, garnet, staurolite, aluminosilicate...the porphyroblast minerals in quartz-muscovite-biotite-bearing Fe-rich pelitic rocks, namely garnet, staurolite...involving aluminosilicate, garnet, staurolite, biotite, chlorite, muscovite, quartz and H 2 0 can be modelled...undergoing replacement by unorientated aggregates of biotite f muscovite. In the lower andalusite zone, unorientated |  | | Journal (article/letter/editorial) | | these are the chlorite, garnet, albiteābiotite, and oligoclaseābiotite zones. The peak PāT conditions estimated...be divided roughly into chlorite, garnet, and biotite zones, with increasing metamorphic grade, based...area, with localized occurrences of garnet- and biotite-zone schists [20]. The samples investigated in...experimental and garnet Margules data to the garnet-biotite geothermometer. Am. Mineral. 2000, 85, 881ā892... Diffusion control of garnet growth, Harpswell Neck, Maine, USA. J. Metamorph. Geol. 2001, 19, 179ā195 |
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