 | | Journal (article/letter/editorial) | | inch diameter crystal was found in the Pulsifer quarry at Auburn, Maine. Six inch crystals have been found...found at West Bethel, Maine, and at the Ruggles quarry, Grafton Center, New Hampshire. Notable excellently...Lode pegmatite near the Royal Gorge in Fremont County, Colorado. Common in the pegmatites of Yavapai...Mountain in the Crested Butte region of Gunnison County, Colorado, in good gem crystals. ANDRADITE, calcium-iron...Andradite has been found at Middletown, Delaware County, Pennsylvania and at other localities in Delaware |  | | Book (edition) | | C, Gilbert C Morgan of Smyrna, Wash., J. Harry Howard and James W. Durst of Greenville, S. C, Lucien...mine, Racooche Valley, White Co. 1866 Vs White County Daniel Light form, % mi. NE Less than 1887 ...Alabama has yielded a 4i%4 carat diamond from Shelby County, 30 miles south of Birmingham, found about 1900...Siding in St. Clair County, 20 miles northeast of Bir- mingham. One found in Lee County in 1901 weighs 4^...have a cornfield at Pounding Mill, Tazewell County, Va. A 3 carat stone, bought by a Knoxville |  | | Journal (article/letter/editorial) | | mine, Caceres, Spain, montebrasite, 414. Amelia County, Virginia, albite, I56; - - , anal., d2o i, 489...Australia, alkali feldspar, anal., d2oi, 489. Bosahan quarry, Falmouth, Cornwall, biotite, 2IO. BOWDEN (P.)... 25o. DAVIS (R. J.), and HEY (M. H.), Cell-contents of arthurite, 52o. - - - - Dean quarry, Coverack...FRICK(C.), A tholeiite sill from South Africa, 9o9. FROST (M. J.) and SYMES (R. F.), A zoned perovskite-bearing...anal., opt., X-ray, 48o; ' - - ' from Skamania County, Washington, is stilbite, 522. Hexacelsian, inversion |  | | Journal (article/letter/editorial) | | eclogitic assemblage approximated by jadeite + pyrope + coesite + talc18 . In both figures, the solid...Sciences, Johns Hopkins University, Baltimore, Maryland 21218, USA. 2 Geophysical Laboratory, Carnegie Institution...Institution of Washington, Washington DC 20015, USA. *e-mail: sver@jhu.edu NATURE GEOSCIENCE | ADVANCE ONLINE...pH 6 7 8 9 0 1 2 CH4 + CO32− Jadeite + pyrope + coesite + talc CH4 + CO2 CH4 + HCO3− 1 CH3COO−...speciation in equilibrium with diamond, jadeite, pyrope, kyanite and coesite at QFM−2.0 at 5 GPa and a |  | | Book (edition) | | Tonopah-Belmont mine, Maricopa County; ca1cioaravaipaite from the Grand Reef mine, Graham County; carmichaelite from...from Gamet Ridge, Apache County; shannonite from the Grand Reef mine, Graham County; wupatkiite from near...Mountain, Coconino County, and grandviewite from the Grandview mine, Coconino County. A few of the additional...uranium deposits on the Colorado Plateau. Coconino County: near Tuba City (Anthony et aI., 2000). ACANTHITE...sulfide found with other copper sulfides. Greenlee County: found in the supergene alteration zone at Morenci |  | | Report (issue) | | ^ Anne Arundel County 43 Baltimore County 45 Howard County - Montgomery County 88 Prince Georges...Georges County Virginia 74 . 120 129 Arlington County 129 Fairfax County 131 Fauquier County 139...139 Loudoun County 143 Prince William County 149 Diabase quarries of northern Virginia 155 CAPTIONS...of the Baltimore Gabbro Complex at Ilchester, Maryland. Figure 6. Triassic diabase dike forming a ridge...Arundel, Prince George's/and Baltimore Counties, Maryland (Sterrett, 1911). Figure 9. Distribution of |  | | Journal (article/letter/editorial) | | amphibolite facies metamorphism of graphitic metapelites, Howard Ridge, British Columbia J . H. SEVIGNY A N D E...Canada ABSTRACT Graphitic metapelites from the Howard Ridge area, British Columbia, have been studied...attended metamorphism of graphitic metapelites at Howard Ridge. Key words: British Columbia; C-0-H equilibria;...model for the fluid components are needed. In the Howard Ridge area, British Columbia, metapelites contain...migmatite-in isograd in the Howard Ridge area is presented in Fig. 1. The Howard Ridge area is underlain |  | | Journal (article/letter/editorial) | | 1460 LANG: METAMORPHIC HISTORY OF ROCKS FROM MARYLAND provides a sensitive test of many inferences... of metamorphic rocks northwest of Baltimore, Maryland, that includes exposures of the Baltimore Gneiss... 1462 LANG: METAMORPHIC HISTORY OF ROCKS FROM MARYLAND Frcunn 2. (a) Low-magnification photomicrographof...ints Major deformation and metamorphismin the Maryland Piedmont apparently occurred during the Ordovician...late Paleozoic deformation and metamorphismin Maryland were restrictedto shearzones(Sutter 1994, personal |  | | Journal (article/letter/editorial) | | rltungameteorite, metallography, 1139. Aroostook County, Maine, ganophyllite, 893. Arrojadite, Rhodesia...area, Singhbhum, India, 671. Big Creek, Fresno County, California, celsian, 914. BIGGAR (G. M.), Apatite...(DOUGLAS G.), Re-examination of pyrope from the Stockdale kimberlite, Riley County, Kansas, 450. BROUSSE (R...Antrim, ferrian chlorospinel, 948. Castle an Dinas quarry, Cornwall, tourmaline, 1078. Catron City, New Mexico...Cordierite, Rhodesia, anal., 1052. Cripple's Ease quarry, Cornwall, tourmaline, 1078. Crccidolite, Bolivia |  | | Journal (article/letter/editorial) | | Sciences, Johns Hopkins University, Baltimore, M.D., USA 8 Abstract 9 Nitrogen is distributed throughout...+ quartz/coesite 23 (metasediment), jadeite + pyrope + talc + quartz/coesite (metamorphosed mafic rocks)...29 pyrope + kyanite + diamond, and for fluids in equilibrium with forsterite + enstatite + pyrope + ...+ SiO2 representing metasediment, and jadeite + pyrope + talc + SiO2 representing 132 metamorphosed...1989, Canil et al. 1990, Brandon & Draper 1996, Frost and McCammon, 2008) and eclogitic rocks 6 189 |  | | Book (volume) | | 600 to 800 feet thick in the north. ALEXANDER COUNTY FAYVILLE, area stream gravels⎯agate, jasper, rare...⎯agate, jasper; d RR siding of Clay⎯agate. CALHOUN COUNTY AREA, shores of the Mississippi R., in the Warsaw...crystals). CRAWFORD COUNTY PALESTINE, area deposits⎯Siderite. EDWARDS COUNTY AREA, T. 1 S, R. 10 E...E, regional deposits⎯Siderite. FULTON COUNTY FARMINGTON, W 6 mi. on Rte. 116 to the Rapatee No. 5 strip...mine⎯pyritized gastropods (Pennsylvanian age). GRUNDY COUNTY AREA: c Regional rd. and RR cuts and banks of Mason |  | | Book (volume) | | 600 to 800 feet thick in the north. ALEXANDER COUNTY FAYVILLE, area stream gravels⎯agate, jasper, rare...⎯agate, jasper; d RR siding of Clay⎯agate. CALHOUN COUNTY AREA, shores of the Mississippi R., in the Warsaw...crystals). CRAWFORD COUNTY PALESTINE, area deposits⎯Siderite. EDWARDS COUNTY AREA, T. 1 S, R. 10 E...E, regional deposits⎯Siderite. FULTON COUNTY FARMINGTON, W 6 mi. on Rte. 116 to the Rapatee No. 5 strip...mine⎯pyritized gastropods (Pennsylvanian age). GRUNDY COUNTY AREA: c Regional rd. and RR cuts and banks of Mason |  | | Journal (article/letter/editorial) | | metabasalt, pelitic gneiss, and iron formation (Frost et al. 2000, Sharp & Essene 1991). The large Archean...Cretaceous to early Tertiary Laramide thrusting. Frost et al. (1998) delineated a longlived plutonic history...The larger grains of garnet have slightly higher pyrope and grossular FIG. 2. BSE image of a garnet porphyroblast...and 0.017 FeOOH in rutile found as inclusions in pyrope xenocrysts. Rudnick et al. (2000) reported up to...Almandine Phlogopite Mg3Al2Si3O12 + KFe3AlSi3O10(OH)2 Pyrope Annite Rim of matrix minerals Temperatures have |  | | Book (volume) | | beds, excavations, etc.Selenite roses. BRULE COUNTY AREA: in the Oacoma zone of the Pierre Fm. On Elm...gray Barite rosette up to 5 or 6 inches. CAMPBELL COUNTY MOUND CITY, W to the Missouri R., regional hillsides...gravels, etc.petrified wood, wood opal. CORSON COUNTY LITTLE EAGLE: area ridges, slopes, stream beds...Guide for Rock Hounds in the United States CUSTER COUNTY AREA: The November Mine, 1.2 mi. SE of the Needles...minesColumbite, Gold, Silver, etc.; and (2) Old Marble Quarry on the Needles Hwy. 5.5 mi. NEScheelite, and deep |  | Mao, Zhu, Fan, Dawei, Lin, Jung-Fu, Yang, Jing, Tkachev, Sergey N., Zhuravlev, Kirill, Prakapenka, Vitali B. (2015) Elasticity of single-crystal olivine at high pressures and temperatures. Earth and Planetary Science Letters, 426. 204-215 doi:10.1016/j.epsl.2015.06.045 | Journal (article/letter/editorial) | | University of Texas at Austin, Austin, TX 78712, USA d Key Laboratory for High Temperature and High Pressure...Sources, University of Chicago, Chicago, IL 60637, USA a r t i c l e i n f o Article history: Received...Carlos olivine [(Mg0.9 ,Fe0.1 )2 SiO4 ] from Arizona, USA, was examined for the chemical composition using...Clinopyroxened Orthopyroxenee HP clinopyroxenef Pyrope garnetg Majorited-garneth a b c d e f g h i 3...sharp velocity jump with a width of ∼7 km (Fig. 6) (Frost, 2003). The calculated velocity jumps at the 410-km |  | | Journal (issue) | | 1942 t!0#1~'4 jo,,, M~, 191/-2. CHJPS FROM THE QUARRY .................................................I I I I I I I I I ■ I 1 ■ I I I Chips from The Quarry I I I I I I I I I I I I I I I I I I I I I I I I...never damaged. It came from LeiperviUe, D elaware County, Pennsylvania, a source of fine garnets. When I...contrast very colorful. Consider the fiery red of pyrope, the lilac and violet of rhodolite, the pink and...divided into four species known as grossularite, pyrope. almandite and spessartite, in which the bivalent |  | Ye, Yu, Li, Long, Smyth, Joseph R., Wang, Zhongping, Liu, Dan, Wang, Xiang, Wang, Cao (2019) High-temperature X-ray diffraction, Raman and IR spectroscopy on serandite. Physics and Chemistry of Minerals, 46 (7) 705-715 doi:10.1007/s00269-019-01032-2 | Journal (article/letter/editorial) | | (wadsleyite) and isolated SiO4 units (forsterite, pyrope), since the rotation of the bridging O atoms (in...Sciences, University of Colorado, Boulder, CO 80309, USA 3 Physics Experiment Teaching Centers, University...frequency at decreased temperature. In addition, Frost et al. (2015) reported unpolarized Raman and infrared...silicates with isolated SiO4 units (forsterite, pyrope), Si2O7 groups (wadsleyite), as well as Si3O9...Peakfit v4.12 (Sea Solve Software Inc., Massachusetts, USA) was utilized for peak fitting in the XRD patterns |  | | Journal (article/letter/editorial) | | rodingites in ophiolite and ophiolitic mélanges (e.g. Frost, 1975; Evans et al., 1979 and 1981; Rice, 1983;...Al-Belushi, 2004; Li et al., 2004; Amato et al., 2007; Frost et al., 2008; Bach and Klein, 2009; Li et al., 2017)...amphibole rodingite from Wadi Sikait has very distinct pyrope M component in comparison to the analyzed garnets...localities. Figure 8a shows a trend of decrease of pyrope content from the early cores PT to the more spessartine...Normally, blackwalls are made up of phyllosilicates (Frost, 1975). In the Eastern desert of Egypt, blackwalls |  | Hu, Yi, Kiefer, Boris, Plonka, Anna, Parise, John B., Zhang, Jin S., Manghnani, Murli H., Sahu, Baikuntha N., Dera, Przemyslaw K. (2019) Compressional behavior of end-member and aluminous iron-bearing diopside at high pressure from single-crystal X-ray diffraction and first principles calculations. Physics and Chemistry of Minerals, 46 (10) 977-986 doi:10.1007/s00269-019-01056-8 | Journal (article/letter/editorial) | | Honolulu, HI, USA 2 Department of Physics, New Mexico State University, Las Cruces, NM, USA 3 Department...Brook, NY, USA 4 Department of Geosciences, Stony Brook University, Stony Brook, NY, USA 5 Department...Meteoritics, University of New Mexico, Albuquerque, NM, USA 6 Hawaii Institute of Geophysics and Planetology...Planetology, University of Hawaii at Manoa, Honolulu, HI, USA 7 Department of Physics and Astronomy, National...top portion of the upper mantle (Ringwood 1975; Frost 2008; Ita and Stixrude 1992; Anderson and Bass 1984; |  | | Journal (article/letter/editorial) | | com/locate/lithos Major and trace elements in pyrope–almandine garnets as sediment provenance indicators...Peg-Goa) pass into oligomict ones dominated by pyrope–almandine garnets (uppermost part of the Myslejovice...zones Goh-Gog). As the predominant low-grossular pyrope–almandines from oligomict garnet assemblages are...studied their trace element composition and zoning. Pyrope–almandine garnets are poor in LREE and show enrichment...element compositions of detrital low-grossular pyrope–almandines can only be matched with some granulites |  | | Journal (article/letter/editorial) | | paths (Spear et al., 1984; Spear & Peacock, 1989; Frost & Tracy, 1991) if the rock of concern has a complex...involving a decrease of almandine (Fe3Al2Si3O12) and pyrope (Mg3Al2Si3O12) components and an increase of the...AEM-EDX analysis, where Alm is almandine, Prp is pyrope, Grs is grossular, and Sps is spessartine. AEM...than Ca-rich halos based on computer simulation (Frost & Tracy, 1991). During decompression for possible...manuscript, as well as Profs D. L. Whitney, B. R. Frost and an anonymous reviewer for constructive comments |  | | Journal (article/letter/editorial) | | 3190/jgeosci.018 Original paper Mineral inclusions in pyrope from garnet peridotites, Kolín area, central Czech...abundant acicular, preferentially oriented rutile in pyrope from the Kolín area. In contrast, rutile inclusions...rare or absent at two other, currently exploited pyrope deposits in northern Bohemia (Podsedice and Vestřev)...identification of the following mineral inclusions in pyrope: rutile, magnesian ilmenite, olivine, magnesite...pre-Variscan crustal residence. Average TiO2 contents in pyrope from the Kolín area (0.37 wt. %) compare with 0 |  | Pamato, Martha G., Kurnosov, Alexander, Boffa Ballaran, Tiziana, Frost, Daniel J., Ziberna, Luca, Giannini, Mattia, Speziale, Sergio, Tkachev, Sergey N., Zhuravlev, Kirill K., Prakapenka, Vitali B. (2016) Single crystal elasticity of majoritic garnets: Stagnant slabs and thermal anomalies at the base of the transition zone. Earth and Planetary Science Letters, 451. 114-124 doi:10.1016/j.epsl.2016.07.019 | Journal (article/letter/editorial) | | Kurnosov a , Tiziana Boffa Ballaran a , Daniel J. Frost a , Luca Ziberna a,2 , Mattia Giannini a,3 , Sergio...GSECARS, University of Chicago, 60637 Chicago, IL, USA a r t i c l e i n f o Article history: Received...calibrants. Substitution of the majorite component into pyrope garnet lowers both the bulk (K s ) and shear modulus... Table 1 Starting materials in wt.% of oxides. Pyrope glass Mixture Py1 Mixture Py3 Enstatite glass...Note: mixture Py2 = 25% pyrope glass + 75% mixture Py1; mixture Py4 = 75% pyrope glass + 25% mixture Py3 |  | Corgne, Alexandre, Armstrong, Lora S., Keshav, Shantanu, Fei, Yingwei, McDonough, William F., Minarik, William G., Moreno, Karen (2012) Trace element partitioning between majoritic garnet and silicate melt at 10–17GPa: Implications for deep mantle processes. Lithos, 148. 128-141 doi:10.1016/j.lithos.2012.06.013 | Journal (article/letter/editorial) | | 5251 Broad Branch Road, NW, Washington, DC 20015, USA Institut de Recherche en Astrophysique et Planétologie...France f University of Maryland, Department of Geology, College Park, MD 20742, USA g McGill University...(LA–ICP-MS) at the Department of Geology, University of Maryland. Concentrations of some trace elements of the...at the University of Maryland. LA–ICP-MS analyses at the University of Maryland were performed using...LA–ICP-MS measurements were made at the University of Maryland. 132 A. Corgne et al. / Lithos 148 (2012) 128–141 |  | Dorfman, Susannah M., Shieh, Sean R., Meng, Yue, Prakapenka, Vitali B., Duffy, Thomas S. (2012) Synthesis and equation of state of perovskites in the (Mg, Fe)3Al2Si3O12 system to 177GPa. Earth and Planetary Science Letters, 357. 194-202 doi:10.1016/j.epsl.2012.09.024 | Journal (article/letter/editorial) | | Geosciences, Princeton University, Princeton, NJ 08544, USA Department of Earth Sciences, The University of Western...Washington, 9700 South Cass Avenue, Argonne, IL 60439, USA d Center for Advanced Radiation Sources, The University...Chicago, 9700 South Cass Avenue, Argonne, IL 60439, USA b a r t i c l e i n f o a b s t r a c t Article...Available online 23 October 2012 Natural and synthetic pyrope–almandine compositions from 38 to 100 mol% almandine...perovskites synthesized from compositions along the pyrope–almandine join is not strongly sensitive to Fe-content |
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