 | | Journal (article/letter/editorial) | | 513–533, 2001 Boron metasomatism of the Alta stock contact aureole, Utah: Evidence from borates, mineral chemistry...77005-1892, U.S.A. ABSTRACT Geochemical study of the Alta stock and adjacent contact aureole rocks provides information... and szaibelyite) in skarn deposits around the stock. In addition, thin section alpha-track mapping implies...minerals within the stock, stockwork veins and related selvages, igneous sills near the stock, contact skarns...skarns, and in marbles up to 500 m from the stock. Forsterite, clinohumite, lizardite, and malachite contain |  | | Journal (article/letter/editorial) | | 18O/16O-depleted periclase zone marbles in the Alta aureole, Utah: insights from ion microprobe analysis of...layers in the periclase (Per) zone of the Alta Stock aureole, Utah. These data define a steep, coherent gradient...Geology and Geophysics, University of Utah, Salt Lake City, UT 84112, USA e-mail: bowman@earth.utah.edu J....University of Wisconsin-Madison, Madison, WI 53706, USA calculations indicate that conservative time scales...the outer half of the periclase zone of the Alta stock, Utah, contact aureole (Fig. 2). These layers (layers |  | | Journal (article/letter/editorial) | | METAMORPHIC MINERALS FROM THE ALTA AUREOLE, CENTRAL WASATCH MOUNTAINS, UTAH. S. L. Hanson1, A. U. Falster2...University of New Orleans, New Orleans, LA 70148. The Alta Stock is one of several early- to mid-Tertiary intrusive...intrusive rocks in the central Wasatch Mountains, Utah. The Alta Granodiorite is, in part, intrusive into a...Deseret-Guardison formations. Emplacement and cooling of the Alta Stock metamorphosed these carbonate rocks and formed...unaltered carbonate rocks toward the contact with the Alta Stock, include the talc, tremolite, forsterite, and |  | | Journal (article/letter/editorial) | | Crandall Ave, Salt Lake City, Utah 84106 Xanthophyllite has been found near the Mountain Lake mine, Big...Big Cottonwood Canyon, Salt Lake County, Utah. Xanthophyllite occurs as small, deep green, tabular, pseudohexagonal...two intrusive masses—the Alta stock of granodiorire and the Clayton Peak stock of quartz diorite. Other...4-0742). Much of the nearby metamorphic rock is a brucite-marble, sometimes referred to as "predazzite."...noted in this rock include periclase, forsterite, brucite, hydromagnesite and rarely, artinite. This is the |  | | Journal (article/letter/editorial) | | Crandall Ave, Salt Lake City, Utah 84106 Xanthophyllite has been found near the Mountain Lake mine, Big...Big Cottonwood Canyon, Salt Lake County, Utah. Xanthophyllite occurs as small, deep green, tabular, pseudohexagonal...two intrusive masses—the Alta stock of granodiorire and the Clayton Peak stock of quartz diorite. Other...4-0742). Much of the nearby metamorphic rock is a brucite-marble, sometimes referred to as "predazzite."...noted in this rock include periclase, forsterite, brucite, hydromagnesite and rarely, artinite. This is the |  | | Journal (article/letter/editorial) | | 513-525, 1994 Contact metamorphismsurroundingthe Alta stock Thermal constraintsand evidenceof advectiveheat...Geology and Geophysics,University of Utah, Salt Lake City, Utah 841 12, U.S.A. Ansrnc,cr Metamorphism...dolomites in the contact aureole of the mid-Tertiary Alta stock has produced a series of isograds with increasing...models of the stock suggestthat the temperature regime in the southern portion of the Alta aureole was...contactmetamorphism,this increaseis controlledby the Alta stock exhibit a well-developedprogressivemetathermal |  | | Journal (article/letter/editorial) | | Crandall Ave, Salt Lake City, Utah 84106 Xanthophyllite has been found near the Mountain Lake mine, Big...Big Cottonwood Canyon, Salt Lake County, Utah. Xanthophyllite occurs as small, deep green, tabular, pseudohexagonal...two intrusive masses—the Alta stock of granodiorire and the Clayton Peak stock of quartz diorite. Other...4-0742). Much of the nearby metamorphic rock is a brucite-marble, sometimes referred to as "predazzite."...noted in this rock include periclase, forsterite, brucite, hydromagnesite and rarely, artinite. This is the |  | | Journal (article/letter/editorial) | | Copyright © 1998 Elsevier Science Ltd Printed in the USA. All rights reserved 0016-7037/98 $19.00 1 .00 Pergamon...accordance with measurements from the Alta (Utah, USA), Ubehebe (California, USA), and Drammen (Norway) aureoles...rocks lies immediately south of the Alta stock in northern Utah. The mineralogical and isotopic evidence...evidence for syn-metamorphic fluid flow in the Alta aureole is presented by Bowman et al. (1994), Cook and...lack of appreciable isotopic depletion above the Alta-Grizzly thrust fault led Cook et al. (1997) to conclude |  | | Report (issue) | | CALITI ES OF UTAH by Kenneth C. Bullock UTAH GEOLOGICAL AND MINERAL SURVEY a division of the UTAH DEPARTMENT...JANUARY 1981 MINERALS AND MINERAL LOCALITIES OF UTAH by Kenneth C. Bullock Nature displays her most...State of Utah. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 County Listings.... . . . . . . 1 Chapter II. Mining Districts of Utah . . . . . . . . . . . . . . . . . . . . . . . ..... . . . . . . . 4 Mineral Localities Listed by County . . . . . . . . . . . . . . . . . . . . . . . |  | | Journal (article/letter/editorial) | | have proven useful in these applications are the Alta and Beinn an Dubhaich contact aureoles. Cook and...T profile for peak metamorphism around the Alta stock, Utah, from the composition of the most Mg-rich...by Reaction 1 at T above the Dol + Per + Cal + brucite (Brc) isobaric invariant point (Fig. 4). [Curves...lithostatic P (Pl) appropriate for metamorphism in the Alta aureole (1500 bars), the invariant point occurs...at 628 °C. To explain development of Per in the Alta aureole at lower T, Cook and Bowman concluded that |  | | Report (issue) | | ORE DEPOSITS OF THE COTTONWOOD-AMERICAN FORK AREA, UTAH BY F. C. CALKINS AND B. S. BUTLER H| WITH SECTIONS...rocks---_-_--_-------_--_-----__--_ Diorite (Clayton Peak stock)_____________ General character and occurrence--___...Petrographic details_______________ Granodiorite (Alta stock)________________ General character and occurrence-____..._____________ Quartz monzonite (Little Cottonwood stock)-___-_._____--___-_-___________ General character...---54 General features.______________-_---_--54 Alta thrust zone.__--___________-----__55 Columbus o |  | | Journal (article/letter/editorial) | | requires that reaction was in®ltration-driven. Brucite pseudomorphs after periclase occur in the Beinn...velocities along the ¯ow path. The distributions of brucite and 18O-depleted rocks are identical in surface...equivalent brucite are unaltered to dolomite by retrograde reactions, the exposure of brucite marbles accurately...metamorphic ¯uids. In the Silver Star aureole brucite pseudomorphs after periclase exclusively occur...source was magmatic. Low Mg/Ca, 18 O-depleted, brucite-free rocks pose a dilemma because the periclase |  | | Journal (article/letter/editorial) | | Geology,Universityof Oregon, Eugene, Oregon97403, USA Abstract. The natural occurrence of critical assemblages...relations (Ribbe et al., 1968) because no discrete brucite (or sellaite) layers exist in the structure. Thompson...compositionally equivalent assemblage forsterite+brucite. The upper thermal stability of pure hydroxyl-clinohumite...higher in temperature than the breakdown of OH-brucite to periclase+H20 (see Fig. 1). This feature implies...OH-clinohumite is stable relative to forsterite+brucite. Duffy, however, noted that pure hydroxyl-clinohumite |  | | Journal (article/letter/editorial) | | It is defined by the phases calcite, magnesite, brucite and portlandite. The black solid lines represent...components calcite, magnesite, portlandite and brucite (Fig. 1B). Both the eutectic E1 and the peritectic...potential brucite (after periclase) was found in thin section. This is noteworthy since brucite replacing... respectively. In contrast, dihedral angles for salt-rich fluids with carbonates were determined, and...dolomite (do), magnesite (mag), portlandite (prt), brucite (br), periclase (pe). (For interpretation of the |  | | Journal (article/letter/editorial) | | Mountain Batholith (Death Valley National Park, USA)☆ Susanne Skora ⁎, Lukas P. Baumgartner, Torsten...northern Hunter Mountain Batholith (California, USA) in Paleozoic sediments. Wollastonite occurs as zones...Mp CANV Mp N Mtm Death Valley National Park, USA Cr Northern satellite intrusion PAL Racetrack...located in Death Valley National Park, California, USA, modified after McAllister (1956) (Grid: NAD27). This...°C, Fig. 4). Periclase is always retrograded by brucite pseudomorphs, indicative of reaction (9). Metamorphism |  | | Journal (article/letter/editorial) | | GEOPHYSICS, UNIVERSITY OF WISCONSIN, MADISON, WI 53706, USA At Cima Uzza, the tonalitic Adamello batholith and...equivalent lithology occurs outside the aureole. Brucite marble, which occurs in xenoliths and as reaction...dolomitic marble. This range of isotopic values in brucite marble is consistent with a hydrothermal formation...Company, P.O. Box 2189, Houston, TX 77252-2189, USA. Telephone: 713 431-4686. Fax: 713 431-7305. e-mail:...anchimetamorphic dolostone, silica-poor dolomitic marble, brucite marble, siliceous marble, and calcite veins and |  | Ferry, John M., Wing, Boswell A., Penniston-Dorland, Sarah C., Rumble, Douglas (2002) The direction of fluid flow during contact metamorphism of siliceous carbonate rocks: new data for the Monzoni and Predazzo aureoles, northern Italy, and a global review. Contributions to Mineralogy and Petrology, 142 (6) 679-699 doi:10.1007/s00410-001-0316-7 | Journal (article/letter/editorial) | | Johns Hopkins University, Baltimore, MD 21218, USA E-mail: jferry@jhu.edu Tel.: +1-410-5168121 Fax:... Johns Hopkins University, Baltimore, MD 21218, USA S.C. Penniston-Dorland Department of Earth and Planetary... Johns Hopkins University, Baltimore, MD 21218, USA D. Rumble III Geophysical Laboratory, 5251 Broad...Broad Branch Road NW, Washington, DC 20015-1305, USA Editorial responsibility: T.L. Grove ucts represent...Monzoni Bellerophon Per marble Dolomite Calcite Brucite Forsterite Clinohumite Spinel Geikielite Baddeleyite |  | | Report (issue) | | GUIDEBOOI( OF NORTHERN UTAH Edited by Mead LeRoy Jensen Kennecott's Bingham Canyon mine, the world's...of Utah's fore~ost industry - copper production. UTAH GEOLOGICAL AND MINERALOGICAL SURVEY affiliated with...AND MINERAL INDUSTRIES University of Utah, Salt Lake City, Utah BULLETIN 82 • PRICE $4.00 • MAY... Norman C. Williams . • 17 PREHISTORIC MAN IN UTAH by fohn P. Marwitt 21 A SUMMARY, References ...View of the deposits of Danger Cave near Wendover Utah . . . . . . . . . . . 2. Cluster of Basketmaker |  | | Journal (article/letter/editorial) | | fine needles of szaibélyite and some crystals of brucite or pyroaurite were found to be generally too narrow...minerals (i.e., talc, serpentine-group minerals, brucite). No direct relationships between borates and sulfides...crystals, up to 1 mm in diameter, are surrounded by brucite + calcite rims that pass outwards to dolomite....described by Woodford et al. (2001) in the Alta stock contact aureole (Utah, U.S.A.), by Ciobanu and Cook (2004)...clinohumite. Symplectitic intergrowths szaibélyite + brucite + magnetite are identified at Cacova Ierii and |  | | Book | | Avenue of the Americas, New York, NY 10013-2473, USA Cambridge University Press is part of the University...(A) Geologic sketch map of Shiprock in New Mexico, USA, showing dikes (linear features) radiating out of...Cretaceous sedimentary rocks, southern Colorado, USA 15 (A) Biotite-rich xenolith in granodiorite dike...cutting the Laramie anorthosite complex, Wyoming, USA. (B) Fine-grained granodiorite autolith in granite...magma chamber floor. Laramie anorthosite complex, USA 3.9 (A) Photo of alkali feldspar mantled with plagioclase |  | | Journal (article/letter/editorial) | | it is talc, tremolite, antigorite, forsterite, brucite, periclase, monticellite and merwinite. Figure...Akermanite Anthophyllite Antigorite Aragonite Brucite Calcite Chrysotile Clinoenstatite Diopside Dolomite...near the respective critical points of the water–salt system. If vapour with very low salinity is formed...reactions that occur within the solvus of the H2O–CO2–salt system. Most relevant is decarbonation, and we illustrate...temperature gradients existed. The brine did not reach salt saturation because the gap between the reaction |  | | Journal (article/letter/editorial) | | 21218, USA b WiscSIMS, Department of Geoscience, University of Wisconsin, Madison, WI 53706, USA Received...groups: calc-silicate marble and hornfels (6), brucite marble (2), samples that contain a reaction front...Mt. Morrison pendant, Sierra Nevada, California, USA. Data are from Ferry et al. (2001). (b) Profile across...limestone layer in the Waits River Formation, Vermont, USA. The dashed horizontal line is the weighted mean...The exceptions are two samples of brucite marble in which brucite is secondary after periclase. Periclase |  | | Journal (article/letter/editorial) | | forsterite (PJ405-2, DHB2-f). Neither periclase nor brucite pseudomorphs after periclase were observed near..., 1994. Contact metamorphism surrounding the Alta stock: thermal constraints and evidence of advective...metamorphism of siliceous dolomites: Alta Stock Aureole, Utah, USA. Journal of Petrology 41, 739– 757...., 1997. Contact metamorphism surrounding the Alta stock: finite element model simulation of heat- and...around the northern part of the Idaho batholith, USA. Applied Geochemistry 5, 641– 655. Criss, R.E., Taylor |  | Bilohuščin, Vladimír, Uher, Pavel, Koděra, Peter, Milovská, Stanislava, Mikuš, Tomáš, Bačík, Peter (2017) Evolution of borate minerals from contact metamorphic to hydrothermal stages: Ludwigite-group minerals and szaibélyite from the Vysoká – Zlatno skarn, Slovakia. Mineralogy and Petrology, 111 (4) 643-658 doi:10.1007/s00710-017-0518-y | Journal (article/letter/editorial) | | is related to a biotite-amphibole granodiorite stock and quartz-diorite porphyry dyke clusters with the...late-retrograde minerals, including talc, serpentine, brucite, anhydrite, carbonates, hematite, sulphide minerals...relatively rare, e.g. in Mount Brooks skarns, Alaska, USA (Aleksandrov and Troneva 2008) or Pitkäranta skarn...contact-metamorphic aureole around the Alta pluton, Utah, USA, where fluids emanating from granodiorite...congolite, trembathite, etc.) occur also within salt (halite, carnallite, kieserite) and anhydrite-bearing |  | | Journal (article/letter/editorial) | | 5 232–238 Ma 7, 11, 17 Ritter Range California, USA SL, SD GD 595 1.5 91 Ma 1, 6 * SD = siliceous dolomite;...Peak Per is completely replaced by retrograde brucite (Brc), and Fo and the humite-group minerals are...prograde and retrograde metamorphism. Retrograde brucite formed after peak periclase. Mineral abbreviations:...actinolite, Ap = apatite, Bad baddeleyite, Brc = brucite, Cal = calcite, Cam = calcic amphibole, Chl = chlorite...fluids with significant quantities of dissolved salt (Bowers and Helgeson 1983a, 1983b; Skippen and Trommsdorff |
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