 | | Report (issue) | | the cover—Turquois crystals from Lynch Station, Virginia; x ca.; pho tograph by Neal Ycdlin; color plates...C. A. Michael. COLD NUGGET FROM SPOTSYLVANIA COUNTY: Longest dimension approximately 13 cm., photograph...of Virginia R. V. DIETRICH* Professor of Geology and Associate Dean of Arts & Sciences, Virginia Polytechnic...Polytechnic Institute Research Division Bulletin 47 Virginia Polytechnic Institute, Blacksburg, Va. 24061 *... © R. V. Dietrich and the Research Division of Virginia Polytechnic Institute, 1970 Printed and bound |  | | Report (issue) | | Jersey, Pennsylvania, Delaware, Maryland, and Virginia _ Chart showing formations and informally named...___________ Columnar section showing geology in a roadcut near Bernardsville, N.J _______________________—_—...X-ray traces of three samples collected from a roadcut near Bernardsville, N.J _________________—_————...several Coastal Plain formations from New Jersey to Virginia. This region was divided into three study areas:...Plains of the Middle Atlantic States (New Jersey to Virginia), 12 sites were sampled to determine whether the |  | | Journal (article/letter/editorial) | | Sur4alifornia (montmorillonite), and Spokane-Wa&ington (halloysite-nontronite). The soils developed on sedimentary...o = 0.984. Complications arise in the case of halloysite because of isotopio exchange between the interlayer...interlayer water and hydroxyl. The D/H ratios of halloysite are thus not preserved and give no information...concerning the conditions of formation of the halloysite soil. better understand the isotopic variations...equivalent) in Fergus County, Montana; Stanley County, South Dakota; and Jefferson County, Colorado; (5) the |  | | Report (issue) | | Seip tage Gb tos 6x: ine 4 a ok pas ae patie os USA Purpose dnd MOGHIOMmEsHEN.. ee eee il a Aes o's...ferruginous bauxite from Cowlitz County, Washington and Columbia County, Oregon ....... 88 14. Average...Average of analyses of laterite from Cowlitz County based omseverditthousondssamplesiy.. sie ihadisl erate...following along the north bank of the Columbia River. County, city, and private roads are numerous and so ...and lesser needs can be supplied by the Cowlitz County Public Utility District. Climate and vegetation |  | | Journal (article/letter/editorial) | | Copyright © 1998 Elsevier Science Ltd Printed in the USA. All rights reserved 0016-7037/98 $19.00 1 .00 Pergamon...48109-1063, USA 2 Shepherd Miller Inc., 3801 Automation Way, Suite 100, Fort Collins, Colorado 80525, USA 3 Department...University, University Park, Pennsylvania 16802, USA (Received February 14, 1997; accepted in revised...one layer of altered biotite to one layer of halloysite, which subsequently reacted to form one layer... Metastable intermediate altered biotite and halloysite form at low temperatures, where reactions are |  | | Report (issue) | | GEOLOGICAL SURVEY CIRCULAR 193 THE BAUXITE DEPOSITS OF FLOYD BARTOW, AND POLK COUNTIES NORTHWEST GEORGIA By W...GEOLOGICAL SURVEY CIRCULAR 193 THE BAUXITE DEPOSITS OF FLOYD, BARTOW, ANI) POLK COUNTIES NORTHWEST GEORGIA By...Scattered deposits of southeastern Floyd County and southwestern Bartow County Section 3, district 17 Section...bauxite district 3. Bauxite deposits of southeastern Floyd and southwestern Bartow Counties Figure 1. Index... in feet .4 8 iii THE BAUXITE DEPOSITS OF FLOYD, BARTOW, AND POLK COUNTIES NORTHWEST GEORGIA ABSTRACT |  | | 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...of rd. a few yds., outcropRose Quartz. DOUGLAS COUNTY CORSICA, S on US 281 to Armour, area rd. cuts, |  | | Book (volume) | | Dahlonega Co. and Rabum Co., and the McDuffie County Belt extending through portions of McDuffie, Warren...Sphalerite. BALDWIN COUNTY MILLEDGEVILLE, at state farmjasper. BANKS COUNTY COMMERCE, along Hwy. 59...along adjoining Co. linerock crystal. BARROW COUNTY WINDER, along rd. to Jefferson and 1½ mi. inside...Guide for Rock Hounds in the United States BARTOW COUNTY AREA, Saltpeter Cave, as floatjasper. CARTERSVILLE:...Cave Springs (NW Polk Co. and 147 Georgia SW Floyd Co.). E 1 mi., extending in a N to S trending |  | | Report (issue) | | _-----___--_5. Diagram showing proportion of halloysite to gibbsite and boehmite in the various soil...thermal analysis identify the kaolin mineral as halloysite. The pH of the Atate clay averages 5.3; that...The minerals in the silt and clay fractions are halloysite, montmorillonite, mixed-layered montmorillonitehalloysite...weddelite. The most abundant of these minerals are halloysite, goethite, hematite, and gibbsite. The principal...show a progressive change from montmorillonite > halloysite * kaolinite » gibbsite. The Atate clay of Guam |  | | Report (issue) | | Hematite ... Ilmenite Kaolin minerals .... .. Halloysite-metahalloysite ._.. Kaolinite _ ... Magnetite...rocks of the Honolua Volcanic Series exposed in a roadcut, West Maui ._ ...._...... 2 5 9 9 14 16 18 20...and titaniferous magnetite and contains minor halloysite-metahalloysite. Resources of ferruginous bauxite...to the bauxite in mineral content, except that halloysite is abundant. Potential resources of aluminous...gibbsite and gibbsite contaminated with iron oxide, halloysite, and anatase; crossed polarizers. Nodule from |  | | Report (volume) | | Clay Deposits of Spokane County Washington By JOHN W. HOSTERMAN GEOLOGICAL SURVEY BULLETIN 1270...Spokane, VV ash_ In pocket 4 1. Index map of Spokane County and v:cinity, VV ash______ 2. Triangular diagram...saprolite ______ Facing 17 6. Photomicrograph of halloysite pseudomorph after plagioclase in basalt sapr...traces of clay samples from the deposits in Spokane County, VVash__________________ 30 10. Differential thermal...analysis curves of three clay minerals from Spokane County, VVash_ _ _ __ __ _ __ _ _ __ ___ __ _ _ __ 31 |  | | Journal (article/letter/editorial) | | quartz, Manhan River mine, Easthampton, Hampshire County, Massachusetts. Marvin Rausch specimen, Jeff Scovil...branch of the Calumet and Hecla mine, Houghton County, Michigan. A. E. Seaman Mineral Museum (Michigan...JulyIAugust: Vanadinite and wulfenite, Old Yuma mine, Pima County, Arizona. Les Presmyk specimen, Jeff Scovil photo...Point claim, Lake George intrusive center, Teller County, Colorado. Dave Bunk specimen, Jeff Scovil photo...Rhodochrosite, area 28, level 20, Eagle mine, Gilman County, Colorado. Dave Bunk specimen on loan to the Colorado |  | | Journal (article/letter/editorial) | | Press. Printed in G rear Britain FORMATION OF HALLOYSITE FROM FELDSPAR: LOW TEMPERATURE, ARTIFICIAL WEATHERING...its morphology that this weathering product is halloysite or its primitive form. The product of naturally...naturally weathered potassium feldspars is halloysite - 4H20. The flame-shaped films or sheets formed on artificially...certainty that halloysite was not formed also. Other attempts to synthesize only halloysite have been unsuccessful...kaolin mineral that morphologically is much like halloysite. This present study shows that artifically weathered |  | | Report (issue) | | Watersheds in Eastern Puerto Rico Figure 2. Sampled roadcut 600 meters southeast of the mouth of the Icacos...from a corestone-rindlet complex exposed at a roadcut 600 meters southeast of the mouth of the Icacos...biotite after the formation of an intermediate halloysite layer (Dong and others, 1998; Murphy and others...grussification of the Boulder Creek Granodiorite, Boulder County, Colorado: Geological Society of America Bulletin... L.J., Buss, H.L., and Brantley, S.L., 2011, Halloysite nanotubes and bacteria at the saprolite-bedrock |  | | Report (issue) | | ___________________ -_-----Lode and placer gold deposits, Mohave County _______________________ _ California ________________________...studies at Bodie ___________ _ Mother Lode, Amador County __________ _ Tertiary gravels, Nevada City area..._____ Gravity survey at eihart ____________ _ Virginia City district_ _______________ _ evada ______..._ _ _ _ _ Tuscarora Range ___________________ Virginia City district__ _______________ 13 Ilf 14 14..._---Central North Carolina _-------------Moore County __ ---------- -- ------South Carolina ____ -- __ |  | | Journal (article/letter/editorial) | | excursion (Stops 4 and 5) . Kaolin minerals such as halloysite and the "fire-clay" mineral are also com1 Contribution...TO FIELD TRIP mon in sediments; the former (halloysite sensu lato) occurs as large deposits of indianaite...presumably indicative of residual weathering. Halloysite-type clays also occur in bulk in the regolith...Reedsville shale (Martinsburg) on right (northeast) in roadcut. Stop 2 (see detailed description) includes Reedsville...miles may therefore be omitted. Port Matilda. Roadcut (optional stop) northeast of U.S. 322 in Mississippian |  | | Journal (issue) | | KRISTALLE Est.1971 Laguna Beach, California, USA • Tel: +1 949 494 5155 • Email: info@kristalle.com...of a pascoite group mineral at a mine in Grand County, Utah. Died, Alex Earl, 26 Jayson Alexander (“Alex”)...brochantite, 2-mm view, from the Posey mine, San Juan County, Utah. Alex Earl collection and photo. 139 Hewettite... Hewettite, 2-mm view, from the Burro mine, San Miguel County, Colorado. Alex Earl collection and photo. Olivenite...Olivenite, 4-mm view, from the Gold Hill mine, Tooele County, Utah. Alex Earl collection and photo. Schindlerite |  | | Report (issue) | | this part of the Puget Sound lowland was done by Willis (1898) who recognized two glaciations of the lowland...forests. The virgin forests of the area described by Willis and Smith (1899) have been logged off, and much...gravel of Willis (1898), which was named after the town of Orting in the Puyallup Valley. Willis believed...Orting drift has replaced the Orting gravel of Willis (Crandell, Mullineaux, and Waldron, 1958). The...included here in the Orting drift. DESCRIPTION Willis (1898, p. 158) designated as the type section of |  | | Journal (article/letter/editorial) | | collected from the face of a freshly bulldozed roadcut at a depth of 2-6 ft. The cut was on a trail under...Spain, 103-104. 25-30June. Bates, T. F. (1962) Halloysite and gibbsite formation in Hawaii: Clays and Clay...J. Sci. 261, 767-772. Patterson, S. H. (1964) Halloysite underclay and amorphous inorganic matter in Hawaii:...of recent basalts from Cameroon: Allophanes, halloysite, metahalloysite, kaolinite and gibbsite: Intern |  | Buss, Heather L., Sak, Peter B., Webb, Samuel M., Brantley, Susan L. (2008) Weathering of the Rio Blanco quartz diorite, Luquillo Mountains, Puerto Rico: Coupling oxidation, dissolution, and fracturing. Geochimica et Cosmochimica Acta, 72 (18) 4488-4507 doi:10.1016/j.gca.2008.06.020 | Journal (article/letter/editorial) | | Park, CA 94025, USA b Department of Geology, Dickinson College, Carlisle, PA 17013, USA c Stanford Synchrotron...2525 Sand Hill Road, MS 69, Menlo Park, CA 94025, USA d Earth and Environmental Systems Institute, Penn...Penn State University, University Park, PA 16802, USA Received 13 September 2007; accepted in revised form...Photograph of the primary sampling site along a roadcut on Route 191 (see map, Fig. 3). Here the 1 m diameter...1:1 ratio with the formation of an intermediate halloysite layer (Dong et al., 1998; Murphy et al., 1998) |  | | Journal (article/letter/editorial) | | in betweenthe pillows. SampleJ was taken from a roadcut on Highway 28 near CrescentBar, Washington. The...s s o l u t i o no f allophane and kaolinite-halloysite. 7th Nat. Conf. Clays Clay Miner lO4-1O8. Hev |  | | Journal (article/letter/editorial) | | obtained from Ward's Scientific Establishment. Halloysite, Iolta Bridge Mine, near Franklin, North Carolina...Theile Kaolin Company, Sandersville, Georgia. Halloysite, Wagon Wheel Gap, Colorado, A.P.I. 29, obtained...Carolina. Kaolinite, Raleigh, North Carolina, roadcut, collected by O. D. Philen, Jr. Kaolinite, Hephzibah...& Wilcox, Hephzibah, Georgia. Kaolinite, Aiken County, South Carolina, obtained from United Sierra Division |  | | Journal (article/letter/editorial) | | (basaltic) crust. Gibbsite, hematite, ±kaolinite, halloysite, goethite, and maghemite are the weathering products...Bluffs Member of the Grande Ronde Basalt in Columbia County, Washington (hereafter referred to as the “Columbia...Member of the Saddle Mountains Basalt in Cowlitz County, Oregon (hereafter referred to as the “Cowlitz...western Washington and the rest were sampled from a roadcut in the Pasco Basin of eastern Washington. Finally...drill core bauxites contain gibbsite, hematite, ±halloysite, kaolinite, goethite, and maghemite; quartz occurs |  | | Journal (article/letter/editorial) | | Sciences, University of North Carolina-Chapel Hill, NC, USA 2. State Key Laboratory of Marine Geology, Tongji...Geography, University of California, Santa Barbara, CA, USA *Corresponding author, email to: Wenshuai Li (wenshuai@ad...1). The humid profile (BE) is located in the roadcut along the Highway 270 in the vicinity of the Bond...and the arid profile (PO) is located in another roadcut along the same highway between Mahukona and Kaiwaihae...minerals including gibbsite, kaolin (kaolinite and halloysite), Fe (hydr)oxides, and amorphous intermediates |  | Bird, M.I., Quade, J., Chivas, A.R., Fifield, L.K., Allan, G.L., Head, M.J. (1994) The carbon isotope composition of organic matter occluded in iron nodules. Chemical Geology, 114 (3) 269-279 doi:10.1016/0009-2541(94)90056-6 | Journal (article/letter/editorial) | | Geosciences, University of ,Arizona, Tuscon, AZ 85721, USA. exists between the 613C.-values of plants which...of open woodlands dominated by Eucalyptus spp. (Willis, 1964). The understory vegetation was largely herbaceous...(Gibbons and Gill, 1964). The profile is located in a roadcut through a low rise on the Warnambool-Penshurst...probable aeolian origin, along with kaolinite/halloysite, smectitic clays, rutile and anatase. The nodules...Malawi, Central Africa. Chem. Geol., 89: 179-188. Willis, J.H., 1964. Vegetation of the basalt plains of |
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