 | | Journal (article/letter/editorial) | | xled—crystallized ph—phosphoresces ALABAMA—Fibrous, brown hematite occurs in a deposit about 5 miles southeast...about 35 miles northwest of Flagstaff, in Coconino County, a pineforested volcanic area. The elevation is...hunting Indian artifacts and there are black and brown obsidian chippings everywhere, as well as some scraps...in California recently I visited the Los Angeles County Museum in Los Angeles to see the famous collection...in Los Angeles can walk across the lawn to the County Museum for another thrill—the display of some of |  | | Report (issue) | | Department of Geology Sul Ross State University Alpine, Texas 79832 Jill Dill Pasteris Department of Earth and...A note on newly discovered kimberlites in Riley County, Kansas William L. Mansker, Bill D. Richards, and...petrography of the Twin Knobs ttl lamproite, Pike County, Arkansas . 205 Michael A. Waldman, Tom E. McCandless...Potash Sulfur Springs igneous complex, Garland County, Arkansas Robert E. Zartman and J. Michael Howard...to phonolite magmatism in the Balcones province, Texas . 293 D. S. Barker, R. H. Mitchell, and D. McKay |  | | Journal (article/letter/editorial) | | black botryoidal hematite from a working strip iron mine at Brookwood, Tuscaloosa Co., Ala. ALASKA—Some of... Y. The specimen consists of thin platy white calcite xls in grayish clay. ARKANSAS—"A HEAP O F PHANTOMS...from the general area."—item sent in by Kenneth C. Brown, 3515 Bennett Ave., Santa Clara, Calif. Two massive...Brooklyn mine and adjacent prospects in the Red Mountain range near Silverton, San Juan County, Colo.,...dated Nov. 30, 1959, was sent in by Clarence L. Boyd, 184 N. Munn Ave., East Orange, N. J. "Regarding |  | | Book | | ; F. R. Boyd, U.S.A.; J. B. Dawson, U.K. 0. L. Anderson, A. L. Boettcher, F. R, Boyd (Chmn.),...Wilshire Editorial and Program Committee: F. R. Boyd and H. 0. A. Meyer EXTENDED ABSTRACTS contributed...weathered near the surface and consists of serpentine, calcite, clay minerals and fragments of crustal and local...very dark, fine grained matrix of serpentine, calcite, phlogopite and magnetite-rich spinel. Minor monticellite...ground mass consists predominantly of serpentine, calcite, minor phlogopite and opaque phases. 94550 I |  | | Journal (article/letter/editorial) | | Doublestrike prospects, Bound Ranch district, Grant County. Collected by Brian Huntsman, Ray DeMark specimen...Fluorite, 14.1 × 10.6 cm, Foster mine, Gila fluorspar district, Grant County. Collected by Jay Rosenbauer... This photo was taken at the Blanchard mine in Socorro County during early May and shows blossoming red...Mountains (Cibola County), Burro Mountains (Grant County), and Fluorite Ridge (Luna County) districts in...recorded from the Foster mine in the Gila fluorspar district, Grant County, in 1880 (Rothrock, Johnson |  | | Journal (article/letter/editorial) | | Megacrysts and Xenoliths in Kimberlite, Elliott County, Kentucky: A Mantle Sample from Beneath the Permian...Tennessee, Knoxville, TN 37916, USA Abstract. Two kimberlite pipes in Elliott County con- tain rare ultramafic...Cr-spinel, magnetite, perovskite, pyrrhotite, calcite, and hydrous silicates. Rare clinopyroxene-ilmenite...the physiochemical parameters of these regions (Boyd and Nixon 1975; McGregor 1979; Eggler et al. 1979;...calculated shield geotherms (Boyd 1973; Boyd and Nixon 1975; Danchin and Boyd 1976). It is not clear whether |  | | Report (issue) | | gravel in part unconsolidated, in part cemented by calcite into a cliff-forming siltstone or conglomerate...others, 1981) HORNBLENDE SYENITE Coarse-grained, brown to black hornblende biotite syenite, quartz syenite...and SR) ' PYROXENE SYENITE Coarse-grained light brown (where weathered) to black (where fresh; rare in...bright green cllnopyroxene and ubiquitous minor calcite. Mapped only in Richeau Hills (RH) and in the anticlinal...of the intrusive suite of Sybille Creek have new brown hornblende, clinopyroxene, enstatite, and olivine |  | | Journal (article/letter/editorial) | | Athens, GA 30602, USA 2 Department of Geology, University of Georgia, Athens, GA 30602, USA Abstract. Based...diatreme situated 4 km SSE of Murfreesboro, Pike County, Arkansas, are classified as micaceous kimberlite...embedded in a groundmass of serpentine, minor calcite, chrome-diopside, phlogopite (Mg/Mg + Fe = 84.15%)...diatreme, situated 4 km SSE of Murfreesboro, Pike County, Arkansas, has been known since 1842 when it was...poikilitic phlogopite (Fig. 2C), serpentine, minor calcite, chrome-diopside, spinel, perovskite, and rare |  | | Journal (article/letter/editorial) | | Texas mineral locality INDEX Whereas Texas is well known for its vastness, cattle industry, and oil...I T S T O P O G R A P H Y A N D G E O L O G Y , Texas, the second largest state, has produced relatively...famous localities. A s this article will show, Texas has had—or currently has—nu merous mineral occurrences...produce good specimens; yet when specimens from Texas are sought in collections and dealers' stocks, few...some basic facts that help explain the situation. Texas has very little federal land in its mineralized |  | | Journal (article/letter/editorial) | | Copyright © 2001 Elsevier Science Ltd Printed in the USA. All rights reserved 0016-7037/01 $20.00 ⫹ .00 Pergamon...Survey, Denver Federal Center, Denver, CO 80225, USA (Received March 6, 2000; accepted in revised form...documented (Germanov, 1965). Graphite replaced by calcite in a gold–tungsten deposit at Macraes, New Zealand...saturated-HC gas chromatograms from the Thompson-Temperly mine, an MVT deposit in the Upper Mississippi Valley...in unaltered limestone at the Thompson Temperly mine (an MVT deposit in southern Wisconsin, U.S., discussed |  | | Journal (issue) | | all things pertaining to the history of Chester county and is a veritable encyclopedia of general information...knowledge in the shape of a history of Chester county. As burgess, Mr. Pennypacker will give considerable...COLLECTOR. calcite with quartz crystals imbedded at intervals. In some places the calcite was white and...accommodations, I set out at once for the copper mine a short distance up the river where I found the...crystals were obtained. The lower openings to the mine had been made in the side of a ravine and were somewhat |  | | Journal (article/letter/editorial) | | specimens from the Red Devil Mine, copper nuggets from the Kennecott mine, etc. and I can assure you that...the numerous tungsten mines in the Darwin, Inyo County, California, area."—note from James H. Richardson...pyrite cubes with beveled edges associated with pale brown xled dolomite on xline pyritic rock. The locality...Jan-Feb, 1959, R&M, pp. 3-4. DELAWARE—Nice pebbles of brown jasper have been found on the south side of Indian...on the south bank of the Etowah River, in Dawson County, Ga. Chatoyant masses of olive-gray tourmaline |  | | Book | | . 38 38 40 43 43 47 47 53 56 61 66 3.7.2.1. Calcite-Serpentine Segregations . . . . . . . . . . . ................................ 6.6.3.4. Fayette County (Hunter et al. 1984) ....................... 6... . . . . . . . . 6.6.3.8. Bellsbank (Boctor and Boyd 1982) . . . . . . . . . . . . . . . . . . . . ....hamlet of Colesbergthe Kimberley Mine (De Beer's New Rush), the De Beers Mine (De Beer's Old Rush), and the...in southern Africa and from the belief that all calcite in kimberlites was secondary and derived from the |  | | Report (issue) | | UUrUUHIC Geology of the Midnite uranium mine, Stevens County, WashingtonA preliminary report By J. Thomas...gments Geologic setting Geology of the Midnite mine area Stratigraphy and structure Petrology of host...Generalized geologic map of part of southern Stevens County showing relations of Precambrian and intrusive...Geologic map of the Midnite mine area 4. Cross section through an ore zone in the Boyd 2 rri jj i i~-___ i»...Plan map of western mineralized zone at the Midnite mine showing thickness of mineralized zones and topography |  | | Report (issue) | | mountain ranges referred to in text 3. Map of western Texas and eastern New Mexico and adjacent areas showing...Chemical analyses of brines from four wells, Eddy County, N. Mex Page I 51 I 55 I 57 GEOLOGY OF THE GUADALUPE...Winkler County, Tex., in 1920, petroleum exploration intensified in adjacent parts of western Texas and ...the Permian rocks of the Guadalupe Mountains of Texas and New Mexico. Before 1930 some of the com plexities...examined the part of the mountains that lie in Texas. Fossils collected by Shumard were recognized by |  | | Journal (article/letter/editorial) | | mostly in small amounts. A bed near Pyriton, Clay County, Ala., was worked for copper. One was mined near...of Cleburne County at what was called Wood's copper mine and also at Smith's copper mine about a mile...Kansas City 3, Mo., a nice brownish-gray section of calcite stalactite from Diamond Cave, Ark. A note with...one little mine I obtained a few specimens of pyrite xls. The small xl enclosed is from a mine about 4 miles...following item, dated Aug. 28, 1954. "In the Brooklyn Mine, San Juan Co., Colo., I found a strikingly beautiful |  | | Book | | discussion and analytical assistance: J.R. Baldwin, F.R. Boyd, D.A. Carswell, T.N. Clifford, P. Deines, C.H. Emeleus...mica-bearing peridotite that in some parts of the mine contained so many xenoliths of carbonaceous shale...Bachelor Lake and Saguenay Valley (all in Canada) are calcite-rich lamprophyres, not kimberlites. Although these...Iramba plateau west of Singida; only the Mwadui Mine at Shinyanga and one near Kahama have been sufficiently...r dykes (Excelsior, Du Plessis Mines) Colossus Mine, Wessels Sill Intrusions of note Frick (1974) |  | | Journal (article/letter/editorial) | | Steel Quarry near Han over for hematite, pyrite, calcite and others. This trip -was followed by one to the...Faylor Quarry at Winfield for cal cite, strontian-calcite, eelestite, strontianite, aragonite, dolomite,...found here The Rock and Mineral Club of Lower Bucks County, Fairless Hills, is featuring in its bulletin,...learn about a particular facet of the hobby. Boyd Brown is going to instruct how to make cabo chons...Mineral and Gem Society, Eastchester The St. Lawrence County Rock and Mineral Club, Potsdam, demonstrated the |  | | Journal (article/letter/editorial) | | from ?.0 to 4.7, biotite from 5.0 to 3.4, and calcite from 8.7 to 7.7 per rail SMOW'. In the orebodiesthe...9.5, calcite -- 8.8, garnet • 4.7, and magnetite-- 0.6 per rail SMOW. The $•C values of calcite in the...sequence of rocks 1926; Ross, 1935; Hurst, 1955; Brown, 1962; The sedimentaryand volcanogenic Kalliokoski...will be referred to as F•. F• resultedin tight calcite, actinolite, tremolite, hornblende with occas-...strikesXNE and dips 30ø to 45ø SE. The actinotite+ calcite -----quartz (Emmons and Laney, angle betweenschistosity |  | | Journal (article/letter/editorial) | | really appears to be the start of a quickly abandoned mine and is located near Huntsville (Madison Co.), Alabama...mining operation is a barite mine operated by the National Lead Co. The mine is easily seen from Highway...dump of the old open pit Sodium Sulphate mine in Imperial County near BertROCKS AND MINERALS ram siding...are always soft. One form collectors claim is calcite pseudo after glauberite. Collectors out here are...little amethyst tint. Some of the onegite xls are brown and some are amethyst. I am wondering if this purple |  | | Journal (article/letter/editorial) | | sponsored by t>- Fulton County Mineral Club of Gloversville, N Y . , at Hop Field, John Boyd Thacher Park near...Federation Mineral and Gem Show in the Silver Bow County Civic Center in Butte, Mont. Hosts: Butte Mineral...Agricultural Society; and Rollin' Rock Club of Texas. Location of Show: Fryeburg Fair Grounds, Fryeburg...Dealers, Special Exhibits, Fluorescent display and mine replica tour. Sponsored by the Kiwanis Club of Franklin...Cutters Guild of Baltimore. Dealers contact James H. Brown, Show Chairman, 8 Cindy Ct., Severna Park, Md. Oct |  | | Report (issue) | | Deposits of the St. Regis-Superior Area Mineral County, Montana By ARTHUR B. CAMPBELL CONTRIBUTIONS TO...rnfault_-----_-_-_-_-_------.___----------------Boyd Mountain fault._____________________j.__________...deposits________________________________________ Little Pittsburg mine ______________________________________ Copper d...Regis-Superior area, Mineral County, Mont. 29. Geologic maps and sections of the Iron Mountain mine, Iron Mountain...Nancy Lee mine, Keystone mining district. 31. Composite geologic map of the Little Pittsburg mine workings |  | | Journal (article/letter/editorial) | | Geological Sciences, University of Texas, Austin, Texas 78712, USA Abstract. Crystal fragments of pyrope...Company, P.O. Box 579, Crested Butte, Colorado 81224, USA 0010-7999/81/0076/0312/$01.80 313 of ultramafic...three crystal spectrometers at the University of Texas at Austin. Data were reduced using the method of...oriented in geometric patterns, and transluscent brown to opaque in thin section; though some exceed 1...lherzolite nodules from South African kimberlites (e.g. Boyd 1970). Most have 1.1 4.2 weight percent Cr203; a |  | | Report (issue) | | reactors. Beryllium deposits in Utah, New Mexico, Texas, and Mexico range from small (Apache Warm Springs...beryl production from the Harding pegmatite, Taos County. Current drilling in the Apache Warm Springs deposit...were discovered in the Victorio Mountains, Luna County in the early 1900s. Gulf Minerals Resources, Inc...porphyry Mo and W-Mo-Be skarn deposits northwest of Mine Hill and south of Middle Hills. At a cut-off grade...Mountain, Otero County and in the molybdenum porphyry deposit at Questa, Taos County, although not in |  | | Journal (article/letter/editorial) | | occurs as dark brown xls in grayish schist. Specimen # 2 is not wollastonite but calcite—group of colorless...of Diamonds is an abandoned diamond mine (the only diamond mine in the U.S.) that has been opened up...of this diamond was Mrs. A. L. Parker of Dallas, Texas. The letter reads as follows: "I am enclosing copies...copies of articles appearing in the Dallas, Texas paper concerning the "Star of Arkansas." Th!s diamond...W l / 2 N W & Section 7, T.I., R 19W of Garland County, Ark., some fine quartz xls containing chlorite |
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