 | | Journal (article/letter/editorial) | | andalusite,sillimanite, and related mineral assemblages in the Truchas Peaks region,New Mexico Jnrrnnv A..."]:::;o'"1';;:::!"1{i;wMexico Abstract The Truchas Peaksregion of northern New Mexico includes an apparent equilibrium...end of the Truchas Peaksuplift. Kyanite is present along the eastern edge and sillimanite in the northern...northern part. Kyanite, andalusite, and sillimanite coexist in the center of the area. Near the triple point...assemblagechloritoidstaurolite-kyanite-andalusite-sillimanite-magnetite-hematite-quartz. Experimental data |  | | Journal (article/letter/editorial) | | rocks from New Mexico Jerpnpv A. GneMsr-rxc Department of Geology University of New Mexico Albuquerque...Albuquerque, New Mexico 87131 Abstract Paragonitehas been identified by electron microprobe and X-ray diffraction...four specimensof metamorphic rock from northern New Mexico. The sodic mica coexists with quartz in three...andalusiteand sillimanite coexist. The other two come from widely separatedareas where sillimanite is the only...only polymorph of AIzSiOsto be found, and sillimanite coexists with paragonite and quartz in each. The |  | | Journal (article/letter/editorial) | | Geology, University of California, Davis, CA 95616, USA ABSTRACT The assemblage muscovite-quartz-staurolite-aluminium...minerals from South Royalton and Gassetts, Vermont, USA, demonstrates that subsets of the minerals in single...analysis of published mineral compositions from New Mexico failed to identify balanced reactions involving... Smithsonian Institution, Washington, DC 20560, USA. for the presence of too many phases on the simplified...Vermont Truchas Peak, New Mexico Snow Peak, Idaho South Royalton, Vermont Pecos Baldy, New Mexico (1987) |  | , , , , , (1980) Mineral resources of the Pecos wilderness and adjacent areas, Santa Fe, San Miguel, Mora, Rio Arriba, and Taos counties, New Mexico. Open-File Report Vol. 1980 (80-382) US Geological Survey doi:10.3133/ofr80382 | Report (issue) | | Santa Fe, San Miguel, Mora, Rio Arriba, and Taos Counties, New Mexico by U.S. Geological Survey, U.S...S. Bureau of Mines, and New Mexico Bureau of Mines and Mineral Resources Chapter A. Geology of the Pecos... Santa Fe, San Miguel, Mora, Rio Arriba, and Taos Counties, New Mexico By Robert H. Moench, U.S. Geological...Geological Survey, and James M. Robertson, New Mexico Bureau of Mines and Mineral Resources Chapter B. Geological... Santa Fe, San Miguel, Mora, Rio Arriba, and Taos Counties, New Mexico By Robert H. Moench, U.S. Geological |  | | Report (issue) | | Department of Geology University of New Mexico Albuquerque, New Mexico 87131 Barbara J. Tewksbury Department...Department of Geology Hamilton College Clinton, New York 13323 ~ ‘PAPER 235 1989 © 1989 The Geological...CIP Cover Photo: Proterozoic rocks of northern New Mexico are separated into two tectonometamorphic plates...shear zone. Rocks overlying the shear zone preserve peak metamorphic conditions near the aluminum silicate...triple point; rocks beneath the shear zone attained peak metamorphism in the lower granulite facies. The |  | | Journal (article/letter/editorial) | | have been reported from only three localities: (1) New Zealand, in metabasite metamorphosed at about 12...Staurolite and talc also occur in enclaves from New Hampshire and Massachusetts (Schureacher 1983). However...is found with prismatic as well as fibrolitic sillimanite and muscovite. Kyanite relics are preserved in...experimental and theoretical curves: kyanite (Ky), sillimanite (Sil), and andalusite (And) (Holdaway 1971);...1971); muscovite (Ms) + quartz (Qtz) = sillimanite + K feldspar (Kfs) + H20 at mole fractions of water (XH2o) |  | | Journal (article/letter/editorial) | | appearsto correlate well with the andalusite : sillimanite equilibrium. Becausefibrolitized biotite is common...that the P-7 conditions of the andalusite : sillimanite equilibrium are identical regardlessof whether...results, coupled with the fact that coarse-grained sillimanite appearsto be fully ordered (Robie and Hemingway...desurface-free-energy shbilizing fibrotite compared to coarse sillimanite. Nitkiewicz and Kerrick (unpub. ms.) provide...that the andasesof zonedplagioclase lusite - sillimanite isograd reaction representsa close analogueto |  | | Journal (article/letter/editorial) | | Pecos Baldy, New Mexico Jeffrey A. Grambling Department of Geology, University of New Mexico, Albuquerque...87131, USA Abstract. Two metamorphic isograds cut across graphitic schist near Pecos Baldy, New Mexico...Regionally metamorphosed rocks in the southern Truchas Range, New Mexico, preserve evidence of gradients in chemical...mountain located 35 km northeast of Santa Fe, New Mexico (see inset, Fig. i). Precambrian metamorphic...in the Truchas Range, but recumbent, isoclinal F1 structures crop out 10 km to the east at Rio Mora (Grambling |  | | Report (issue) | | OR PROFE SIONAL PAPER 68 THE ORE DEPOSITS OF NEW MEXI.CO BY WALDEMAR LINDGREN, LOUIS C. GRATON AND...PRQ)tESSIONAL PAPER 68 T·H E ORE DEPOSITS O.F NEW MEXICO.. . . ., .,· ;,.: BY WALDEMAR LINpGREN,...5 Historical sketch of mining and smelting in New Mexico....... . . . . . . . . . . . . . . . .............. : . .............. - ........ .. . . T~os County, by L. C. Graton and W ..Lindgren ..... .......... .... : ......... ·........... . . , ... -.. . Rio Hondo. (Twining) district . . . . . . . . . . . |  | | Report (issue) | | See Oregon 10 Idaho Wilderness 11 Italian Peak and Italian Peak Middle Roadless Areas, Idaho and Montana...eastern part 14 Sawtooth Wilderness 4 Scotchman Peak Wilderness study area, Montana and Idaho See Montana...along the northeast border, to 12,009 ft on Hyndman Peak, the third highest point in the state. Local relief...Bedstead (11,151 ft) to Standhope Peak (11,878 ft) and Pyramid Peak (11,628 ft), a distance along the...complexes have been discovered; the older, the Van Horn Peak has margins largely invaded by intrusive rocks in |  | | Report (volume) | | Tracy of Geology & Geophysics Yale University New Haven, CT 06520 Paul H. Ribbe Series Editor: Department...addition, during first of use prograde be post-peak step the of that contents in metamorphic ...history is calculating fluid are used, post-peak zoning of strategies rocks Chapter inclusions...The of could were University. Lou difficult New have by EAR LA, problems. 80-20567 a red ...HETEROGENEOUS THE ADDITION PHASE HOMOGENEOUS OF A NEW COMPONENTS BRAMP ERS ©a a uteis The The The |
|
