 | MacLeod, N.S., Taylor, E.M., Sherrod, D.R., Walker, G.W., Causey, J.D., Willett, S.L. (1983) Mineral resource potential map of the Three Sisters Wilderness, Deschutes, Lane and Linn counties, Oregon. Open-File Report Vol. 1983 (83-659) US Geological Survey doi:10.3133/ofr83659 | Report (issue) | | Three Sisters Wilderness, Deschutes, Lane, and Linn Counties, Oregon By Norman S. MacLeodl, Edward M....Open-File Report 83-659 U.S. Geological Survey 2 3 . Oregon State University and U.S. Geological Survey U.S...Willamette National Forests, Deschutes, Lane, and Linn Counties, Oregon. The Three Sisters Wilderness was...wilderness. A broad area centered around South Sister volcano is among the most geologically favorable...favorable localities for geothermal resources in the Oregon Cascade Range, based on the large volume of silicic |  | | Journal (issue) | | WASHINGTON November 3, 2001 9:30 am to 6:30 pm Clark County P. U. D. Building 1200 Fort Vancouver Way Vancouver...Howard will talk and show slides of Osidian Cliffs, Lane Co., Oregon. Anyone who has slides to share with the...Wa)' Washington Interstate Bridge Columbia River Oregon 2. PRESIDENT'S COMMENTS: Results of the Membership...of the northwest location registers (such as an Oregon site guide). This has been a controversial topic...questionnaire to give us benefit of your ideas. Just pass them on to me or one of the other officers of the |  | | Journal (issue) | | safe and healthy. Hopefully this whole mess will pass and we will be able to meet again in the Fall. ...G. Howard, editor 356 SE 44th Avenue Portland, Oregon, 97215 e-mail: pogodh@hei.net DUES: $15 per year...āKellyā Starnes 1276 SE Goodnight Avenue Corvallis, Oregon, 97333 e-mail: bikeklein@yahoo.com Zeolite Group...forming orderly crystalline solids and the result is obsidian. If enough cooling has occurred before the molten...results in the spherical white regions in snowflake obsidian. If the regions grow a little further, spheres |  | | Report (issue) | | STATE OF OREGON D EPARTMENT OF GEOLOGY AND MINERAL IND USTRI ES 329 Oak Street Portland, Oregon Bulletin...I The Geology and Mineral Resources of Lane County, Oregon by WARREN D. SMITH Professor of Geology...University of Oregon In collaboration with LLOYD L. RUFF Instructor in Geology University of Oregon Eugene...Eugene, Oregon 1938 STATE GOVERNING BOARD W. H. STRAYER. CHAIRMAN ā¢ E BAKER MEDFORD ALBERT BURCH PORTLAND...REPRESENTATION OF THE RELATION OF GEOLOGY TO SOME OF LANE COUNTY'S ,ACTIVITIES FLOOD CIJNTROI.. / .... |  | | Catalog/List | | Old No. l Headfnme. Whi ā key Hlll Mine, Tuohnne County, CaUfomla (rā -,u. .SVā¢t- tor cr11ā¢tā¢J lJaed gold...feldspar. 784 ADAMITE, Moha\'.1k Mine, San Bernardino County, r.alifornia. Group o f colorless to light green...chalcophanite crystals on \/ad. 104 ADAMITE, Quartz Mountain, Nevada. Pale blue to colorless nearly equant...785 ADAMITE (CUPRIAN),MohawkMine, San Bernardino County, California. Nicely spaced transparent jade green...55:1447 (1970). 911 ALBITE,Clear Creek, San Benito County, California. White semi-transparent crystals on |  | Martin, Audrey M., MĆ©dard, Etienne, Devouard, Bertrand, Keller, Lindsay P., Righter, Kevin, Devidal, Jean-Luc, Rahman, Zia (2015) Fayalite oxidation processes in Obsidian Cliffs rhyolite flow, Oregon. American Mineralogist, 100 (5) 1153-1164 doi:10.2138/am-2015-5042 | Journal (article/letter/editorial) | | Fayalite oxidation processes in Obsidian Cliffs rhyolite flow, Oregon Audrey M. Martin1,2,*, Etienne MĆ©dard3...present in lithophysae from a rhyolite flow (Obsidian Cliffs, Oregon). Textural, chemical, and structural analyses... 1154 MARTIN ET AL.: FAYALITE OXIDATION IN OBSIDIAN CLIFFS RHYOLITE gested that Fe3+ can only be incorporated...the talus of the Obsidian Cliffs rhyolite flow, East of McKenzie Pass in the Oregon Cascades, U.S.A....part of the flow is mostly a compact and glassy obsidian with spherulites, containing deformed microlite |  | | Journal (article/letter/editorial) | | Arci, Sardinia (Rossi, 1963), and Obsidian Cliffs, Lane Countv, Oregon, U.S',\. (Walker, personal commu...12 22.O 7.7" 8.4 0.74 2.9 0 .1 4 .0.35 3.0 obsidian Cliffs, Oreson 6 1. 8 0.11 2r.8 1.5" 6.9 0. 9 8...m)rrOao si/(si !al\ 0.65 ir 86 0.81 Cr.86 Atcl Obsidian Clifis (Ko oNao oeCao or)o rt(Mgo ,.per+o es\{n6...fayalitic olivine, and some q\artz.In the Obsidian Cliffs specimenprominent reddish-brown,paperthin plates...modified composition.The mica phaseobservedin the Obsidian Cliffs occurrencemay be a partial breakdown product |  | | Journal (issue) | | 5 Magnetic Minerals Donald G. Howard Portland, Oregon Magnetism as most people think of it is relatively...spherical clusters of cristobalite embedded in obsidian at several locations in California. As such, it...osumilite and phlogopite in the tridymite at Obsidian Cliffs is very different. It also is in reasonably...Laihunite The remaining electrons may not Obsidian Cliffs, Lane Co., OR 9 be localized, in which case...on laihunite, especially the material from Obsidian Cliffs. More work is necessary on this interesting |  | | Report (issue) | | 7. Archaeology, Geology, and Geochemistry in Obsidian Provenance Studies Richard E. Hughes and Robert...scales, weighing scales, map scales, and scaling a mountain. As a noun, scale has three broad meanings: (1)...further and further away from the paradigms of its sister disciplines. Archaeologists have experimented with...early development of archaeological geology in North America, in Drake, E. T., and Jordan, W. M., eds...eds., Geologists and ideas: A history of North American geology: Boulder, Colorado, Geological Society |  | | Report (issue) | | Three Sisters and Mount Jefferson Wilderness Areas, Oregon Professional Paper 1606 uses science for a changing...volcano and moraine-dammed lake. South, Middle, and North Sisters in background. Photograph by Austin Post...Three Sisters and Mount Jefferson Wilderness Areas, Oregon By Jim E. O'Connor, Jasper H. Hardison III, and...flows from moraine-dammed lake releases at central Oregon Cascade Range volcanoesā Mt. Jefferson, Three Fingered...Three Sisters and Mount Jefferson wilderness areas, Oregon / by J.E. O'Connor, J.H. Hardison III, and J.E |  | | Report (issue) | | CoverāDistributed arc volcanoes in the Cascades of central Oregon. At least 23 separate vents are discernible in...southwestward view from low on the southern slope of South Sister. Vent belt in this continuous reach of the northsouth...taken in July 2001. FrontispieceāBurney Mountain, 37 km north-northwest of Lassen Peak, is by far the...Butte, 4 km northeast of the summit of Burney Mountain.) iiiāā Foreword The Cascade magmatic arc is...from Lassen Peak in northern California to Meager Mountain in Canada, above the subduction zone where the |  | | Journal (article/letter/editorial) | | Abstract osumilitesfrom sakkabira,Japan,obsidian cliffs, oregon, and Nain, Labradorhavebeen studiedby optical...1956)(StanfordUniversity ff7753);ObsidianCliffs,nearMcKenziePass,Oregon (Caltech #7396); and Nain, Labrador (Berg and Wheeler...KBr reference pellet. Concentrationsfor the Obsidian Cliffs andNain samplesusedin theM6ssbauer experiments...breadthof the bandat 15,480 the co spectrumof an Obsidian Cliffs sample to a superpositionof a dominant lower-energyband...Na20 Kzo 'ttotal percent Labrador 2v=24" Japm oregon 6.4 0.1 0.4 4.3 6 0. 8 0.2 22.4 ).o 6.6 0,1 0 |  | | Journal (issue) | | WASHINGTON November 3, 2007 9:00 am to 5:00 pm Clark County P. U. D. Building 1200 Fort Vancouver Way Vancouver...you can. PUD Park Washington Interstate Bridge Oregon Mill Plain Blvd. Ft. Vancouver Way Columbia...Ceil Stickney of Eugene, Oregon near the town of Trent in Lane County, Oregon, just southeast of Springfield/Eugene...in the extreme northwest part of T19S R1W in the north part of section 7, although the township and range...Trent, Lane County, Oregon Fig. 5 Yellow orpiment needles in chalcedony, Trent, Lane County, Oregon Fig |  | | Journal (issue) | | member that you will become one before many weeks pass by. Membership in the club has many advantages,...two exceptions, I did not appeal stituent, while obsidian, hardness dose to any professional: in one case...information. Mountain region, the gem forms of * * * chalcedony together with obsidian, Materials CHERT...impregnating the stone with yellow specks. In the Rocky Mountain territory, as well as the Pacific States, there...collection it is especially p rominent from Virginia, North Carolina, South Carolina and Georgia. FELSITE The |  | | Journal (article/letter/editorial) | | Modoe basalt, 2.3 mi. N E of Glass Mountain Andesite, N of Garnet Mountain, SW 1/4 of Sec. 25, T.44 N., R...edge of flow Obsidian from rhyolite-dacite composite flow, 3 mi. ~NE of Glass Mountain Older rhyolite...rhyolite obsidian, 5 mi. 1WE of Glass Mountain Older rhyolite obsidian, 3.5 mi. S of Little Glass Mountain Older...Older rhyolite obsidian, 7 mi. S of Little Glass Mountain Obsidian from perlitic rhyolite, 1.5 mi. SW...Hoffmann Rhyolite obsidian from Glass Mtn. flow, 2 mi. N E of Glass Mountain Rhyolite obsidian from Glass Mtn |  | | Journal (issue) | | experienced hobbyists alike to understand how jasper and obsidian are formed plus a review of their different types...for more details ION Mining Cooperative Idaho, Oregon, Nevada Working hard to deliver Oregonās premier...Jasperās in Oregon lorilytlecoleman@gmail.com 575-545-2814 *Specializes in Oregon Jaspers and Oregon Plume...com *Specializes in Pink Lady Plume Agate and Oregon Jaspers. PO Box 108, Wells, NV 89835 tnjrocks@zoho...Moss Drive, P.O. Box 740252 Houston Texas, TX 77074 USA Tel : +1 832 641 5014 ; +234 803 715 8372 Fax : +1 |  | | Journal (article/letter/editorial) | | and zircon. fluidal texture ofthe rhyolite. The "Oregon" sample(NMBE-A8491) compriseshexThis sample has...a fissure within a rhyolite from North Sister Mountain, Lane County, Orlow Fe content (Table l). The...Specimens from Obsidian Cliffs, near by us in the area of VikesA where banded, migmatitic McKenzie Pass, Oregon...within the charnockitic Precam- one close to North Sister Mountain), were described by ARMBRUSTER AND OBERHANSLI:...Eifel 893 n:4 Japan Japan Shimizu Haysaki Sardinia Oregon n:4 n:4 n:3 n:4 sio, Tio, 62.75 61.9s 59.45 60 |  | | Journal (issue) | | Cir., Peyton The Senior Center is located at 1514 North Hancock in Colorado Springs. For more information...Oct. 13-19 is Earth Science Week 2013.āFremont County Stones and Bonesā and Canon City Geology Club have...Creek and South Valley Open Space Parks (Jefferson County), structural geology and oil geology, led by Ned...Minerals of the Golden Horn Batholith, Washington Pass, Northern Cascade Mountains, Washington; by Dr....Chemistry Depts. āThe unusual minerals at Washington Pass include zektzerite, sogdianite, brannockite, and |  | | Journal (article/letter/editorial) | | EXTENSIVE IN THE YELLOWSTONE 247 DEPOSIT OF OBSIDIAN NATIONAL PARK. BY WM. H. HOLMES. CONSIDERABLE...in them,situated in the north-western part of the park,near the head of Obsidian or Alum creek,a tributaryof...pointswhere the glassy rocks predominate. In ascending Obsidian creek,by way of the newly-cutwagon road which...connects Mammoth Hot Springs with th2 Geyser Basins, we pass firstthroughbroad meadows and parked forests. Farther...a narrowgateway known as Obsidian cafion,throughwhich the road and creek pass. From the east side of the |  | | Journal (issue) | | Violet #5 claim , Wah Wah M ounĀ tains, Beaver County, Utah. The crystal is about 1 cm in size. John...B-2120 Schoten England: Roger S. Harker 2 Wellsic Lane, Rothley Leicestershire LE7 7Qb Canada: Mrs. J...westcentral and southwestern Utah comprise one o f North Americaās most interesting collecting regions. The...been known for many years in the Dugway Range, north of the Thomas Range, and in the Keg Mountains, 12...four to eight miles across, and trends north-south. Spor Mountain lies to the west and appears almost to |  | | Journal (article/letter/editorial) | | and in the Rocky Mountain region, the gem forms of chalĀ cedony together with obsidian, were largely used...scale, with silica as a chief constituent, while obsidian, hardness close to 6 and partly composed of feldspar...namely; easy flaking, toughness and hardness. Obsidian possessed the first in high degree, while chalcedony..., sponges, and other marine proĀ In the Rocky Mountain territory, as ductions." About forty years ago...boulders, many articles were made from it. c ginia, North Carolina, South Carolina and Georgia. FELSITE The |  | | Book | | by William J. Fritz Roadside Geology Series MOUNTAIN PRESS PUBLISHING COMPANY MISSOULA, MONTANA Copyright...85-4934 ISBN 0-87842-170-X Printed in the U.S.A. MOUNTAIN PRESS PUBLISHING COMPANY P.O. Box 2399 * 1301S...some. I settled on a rule to write the guides from north to south, and from west to east. I did depart from...but because I am more familiar with that to the north. In addition to my own research, I have led geology...support of this project extended by Tim Manns, north district naturalist and park historian. Lanny H |  | | Book | | one of the major volcano-tectonic features of the North American continent to visiting scientists from abroad...MONTANA , 1 10 - ) " , ,\..r-.rĀ·~' 44 1 - OREGON oy--#--~I I I 4 3~ 16 I I I I I .JC I Owyhee""...volcanic center. west, where NNW trending block fault mountain ranges terminate abruptly against its southeast...elements of Basin and Range physiography to the north and south; whereas, the western segment is bounded...eastern SRP and the vector of absolute motion of North America (e.g., Minster and Jordan, 1978) suggests |  | | Journal (issue) | | WASHINGTON May 3, 2014 9:00 am to 5:00 pm Clark County P. U. D. Building 1200 Fort Vancouver Way Vancouver...Bridge Columbia River County Buffet in Vancouver. Please join us if you can. Oregon 2 Hello from your...G. Howard, editor 356 SE 44th Avenue Portland, Oregon, 97215 e-mail: pogodh@hei.net DUES: $15 per year...āKellyā Starnes 1276 SE Goodnight Avenue Corvallis, Oregon, 97333 e-mail: bikeklein@yahoo.com 3 Mineralogy...Rhombs of calcite on siderite Clackamas River, Oregon angle can be anything from 0o to 120o, excluding |  | | Journal (issue) | | Mrs. Peg Norton. President 11945 Magnolia Blvd., North Hollywood, CA 91607 Lee Hollinshead. First Vice-President...Beers Rd. March 19-20-Gaithersburg, MD-Montgomery County Fairground, 16 Chestnut Street March 19-20-Sacramento...fabrication, production and fewer parts, we can pass the savings on to you. 2-40-95..........ā¢ā¢.ā¢......Petersburg, FL Mar. 26ā¢27 - Roseville Gem Show Placer County Fairgrounds, Roseville, CA Mar. 25-27 - 8th Annual...jlobt~to tje-& ~S~ol ~.Lode~S~, AT THE STANISLAUS COUNTY FAIRGROUNDS TURLOCK, CALIFORNIA MARCH 12. 1977 |
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