 | | Report (issue) | | ¥ TEXAS ROCKS AND \ r - An Amateur’s Guide ;s ROSELLE M. GIRARD A b OF ECONOMIC GEOLOGY V N IVERSITY...The University of Texas Austin, Texas Peter T. Flawn, Director Guidebook 6 TEXAS ROCKS AND MINERALS...Rock identification charts Descriptions of some Texas rocks and minerals Anhydrite .................................................................... Mica ..................................................Composition, hardness, and specific gravity of some Texas minerals Pace 25 26 39 40 43 43 43 44 45 46 47 |  | | 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 |  | | 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 |  | | Report (issue) | | Resource Areas of the Basin and Range Province of Texas Compiled by Christopher D. Henry and Jonathan G...Economic Geology, The University of Texas at Austin, Austin, Texas, and Michelle Frodey Hutchins, U.S...deposits within the Basin and Range Province in West Texas occur largely as vein and replacement deposits containing...prospects or open cuts. Culberson Brewster County U Fluorite, U, Mo, Hg Hg, fluorite Ag, Pb,...Allamore Talc, north of Van Horn mining area along the county boundary. 31°10'N. lat.; 104°52'W. long. Seven |  | | Journal (article/letter/editorial) | | MOUNTAINS, TEXAS. • T. FLAWN. ABSTRACT. Zonedand unzonedperthite-quartz-plagioclase-muscovite pegmatitesin...Precambrianmetasedimentary rocksof the Mica Mine area, Van Horn Mountains, Texas. Zoned bodies have a core of perthite...and quartz and a plagioclase-quartz-perthite-muscovite wall zone. The pegmatitescontainnumerousschistinclusions...the featuresof Mica Mine pegmatites are best explainedby the magmatictheory. The Mica Mine area has possibilities...rocksintrudedby pegmatites are exposedin the Mica Mine areaof th• Van Horn Mountains(Fig. 1). The areais |  | | Journal (article/letter/editorial) | | Alabama 36849 cookrob@auburn.edu Euclase La Marina Mine, Municipio de Pauna Boyacá, Colombia E uclase...deposits in the Badger Flats–Lake George area, Park County, Colorado. In the COLOR SPONSORS for the Connoisseur’s... Euclase crystal group, 11.2 cm tall, La Marina mine, Municipio de Pauna, Boyacá, Colombia. Scott Rudolph...euclase is associated with bertrandite, fluorite, muscovite, and quartz. Specific occurrences include the...reported from Mount Antero pegmatites in Chaffee County. Other reported American euclase occurrences, some |  | | Journal (article/letter/editorial) | | NEBRASKA NORTH DAKOTA, OKLAHOMA, SOUTH DAKOTA AND TEXAS BY MARGARET COOPER CONTENTS Page Page 1. Foreword...Part 2, and Part 3 258 Oklahoma, South Dakota, Texas and Section 2. Additional References 259 United...South Dakota, and Texas 262 souri, Nebraska, North Dakota, Oklahoma, South Dakota, and Texas 299 FOREWORD...Nebraska, North Dakota, Oklahoma, South Dakota, and Texas. It is Part 4 of a comprehensive bibliography planned...Nebraska, North Dakota, Oklahoma, South Dakota, and Texas; Index II, Geographical Index for Arkansas, Iowa |  | | Book (volume) | | instance, a single Spodumene crystal from the Etta Mine near Keystone on the east side of the Mount Rushmore...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...Hounds in the United States CUSTER COUNTY AREA: The November Mine, 1.2 mi. SE of the Needles Eye Tunnel |  | Mulder, Jacob A., Karlstrom, Karl E., Fletcher, Katherine, Heizler, Matthew T., Timmons, J. Michael, Crossey, Laura J., Gehrels, George E., Pecha, Mark (2017) The syn-orogenic sedimentary record of the Grenville Orogeny in southwest Laurentia. Precambrian Research, 294. 33-52 doi:10.1016/j.precamres.2017.03.006 | Journal (article/letter/editorial) | | University of New Mexico, Albuquerque, New Mexico 87106, USA 3 New Mexico Bureau of Geology and Mineral Resources...Mexico 87801, USA. 4 Department of Geosciences, University of Arizona, Tucson, Arizona 85721, USA. Abstract...the Late Mesoproterozoic. New detrital zircon, muscovite, and biotite ages refine the provenance, depositional...isolated basement uplifts in central and western Texas (Mosher, 1998; Bickford et al., 2000; Mosher et...Laurentia with an extensive detrital zircon, muscovite, and biotite dataset. A detailed record of the |  | | Report (issue) | | green coloration in an assemblage of quartz and mica. Photograph from USGS archive. Upper right, beryllium.............................................. E20 Mine Waste Characteristics........................................................................ E24 Mine Closure...........................................green coloration in an assemblage of quartz and mica (U.S. Geological Survey archive). (mainly of the...biotite granite) to 10 ppm beryllium (in muscovite and two-mica granite) (Hörmann, 1978; Taylor and Geology E7 |  | | Book (volume) | | ASHTABULA COUNTY CONNEAUT, area pits, quarries, rd. cuts, etc.⎯cone-in-cone Calcite. CLERMONT COUNTY MILFORD...CLINTON COUNTY WILMINGTON, area of Todd’s Ford, a mineral deposit⎯Hematite. COSHOCTON COUNTY AREA, townships...CUYAHOGA COUNTY CHAGRIN FALLS (on Geauga Co. line), area quarries⎯oilstone. DELAWARE COUNTY DELAWARE...nodules⎯Pyrite (crystals sharply cubic). FRANKLIN COUNTY COLUMBUS, area countywide exposures of blue clay...HIGHLAND COUNTY SINKING SPRING, area ore deposit (most important in Ohio) ⎯Hematite. HOCKING COUNTY AREA |  | | Book (volume) | | ASHTABULA COUNTY CONNEAUT, area pits, quarries, rd. cuts, etc.⎯cone-in-cone Calcite. CLERMONT COUNTY MILFORD...CLINTON COUNTY WILMINGTON, area of Todd’s Ford, a mineral deposit⎯Hematite. COSHOCTON COUNTY AREA, townships...CUYAHOGA COUNTY CHAGRIN FALLS (on Geauga Co. line), area quarries⎯oilstone. DELAWARE COUNTY DELAWARE...nodules⎯Pyrite (crystals sharply cubic). FRANKLIN COUNTY COLUMBUS, area countywide exposures of blue clay...HIGHLAND COUNTY SINKING SPRING, area ore deposit (most important in Ohio) ⎯Hematite. HOCKING COUNTY AREA |  | | Report (issue) | | University of Texas at Austin Geological Sciences Department | University Station Stop C1100 Austin, Texas 78712...78712, USA W.D. Carlson Department of Geological Sciences Jackson School of Geosciences University of Texas...Austin 1 University Station C1100 Austin, Texas 78712-0254, USA M.C. Gilbert School of Geology and Geophysics...Geophysics University of Oklahoma Norman, Oklahoma 73019, USA J.G. Liou Department of Geological and Environmental...Stanford University Stanford, California 94305-2115, USA S.S. Sorensen Department of Mineral Sciences National |  | Runyon, Simone E., Seedorff, Eric, Barton, Mark D., Steele-MacInnis, Matthew, Lecumberri-Sanchez, Pilar, Mazdab, Frank K. (2019) Coarse muscovite veins and alteration in porphyry systems. Ore Geology Reviews, 113. 103045 doi:10.1016/j.oregeorev.2019.103045 | Journal (article/letter/editorial) | | Journal Pre-Proof Coarse Muscovite Veins and Alteration in Porphyry Systems Simone E. Runyon, Eric Seedorff...Steele-MacInnis, P. Lecumberri-Sanchez, F.K. Mazdab, Coarse Muscovite Veins and Alteration in Porphyry Systems, Ore...Published by Elsevier B.V. JOURNAL PRE-PROOF Coarse Muscovite Veins and Alteration in Porphyry Systems Simone...E- Keywords: porphyry copper, greisen, coarse muscovite alteration, hydrothermal alteration, porphyry...molybdenum JOURNAL PRE-PROOF 1. 2 ABSTRACT Coarse muscovite veins and alteration occur in porphyry copper |  | | Journal (article/letter/editorial) | | Thermochronology of the Grenville Orogeny in west Texas Stephen W. Grimes a,∗ , Peter Copeland b b a Department...Geological Sciences, University of Texas at Austin, Austin, TX 78712, USA Department of Geosciences, University...Houston, 4800 Calhoun Road, Houston, TX 77204-5007, USA Received 7 April 2003; accepted 8 December 2003...the metamorphic core of the Grenville Orogen in Texas. Unlike the correlative Llano uplift, 500 km to... during D2 , at 1057 ± 6 Ma, within error of muscovite closure in the northwest Carrizo Mountains at |  | | Journal (article/letter/editorial) | | Granite, near Red Stone quarry, Conway, Carroll County, New Hampshire. Henry Minot specimen and photo...Teller and Park counties, CO, USA Crystal Park–Bear Creek, El Paso County, CO, USA Pikes Peak Granite NYF... 3 Mount Antero and Mount White, Chaffee County, CO, USA Mount Antero Granite NYF Miarolitic beryl...Mountains, Boise, Custer and Elsmore counties, ID, USA Sawtooth Granite in the Idaho batholith NYF Miarolitic... Moat Mountain and related areas, Carroll County, NH, USA Conway Granite in White Mountain intrusive |  | | Journal (article/letter/editorial) | | on the Post territory which covers most of Yuma County, Arizona, and a small area in California."—letter...of Diamonds is an abandoned diamond mine (the only diamond mine in the U. S.) that has been opened up...Liggett military reserjade deposits in (Monterey County) Cali- vation are some of the very few found on...found cent exploitation of the jade deposits on muscovite xls of the same habit as the the Hunter Liggett...necessitated certain restrictions on resame, only the muscovite xls are about moval of the semi-precious stone |  | | Journal (article/letter/editorial) | | cryptomelane-hollandite in Permian bedded sa1t, Palo Duro Basin, Texas, 1211 B e n n e t t , C . E . G . , s e e G r a...REE- 1281 bearing vesuvianite from San Benito County, California, 625 Fl-orke, 0.W., see Nukui, A.,...Y . C h a n g , A . F . K . v a n G r o o s : Muscovite dehydroxylation : High-temperature studies,537...Mineralogical Society of Arnerica in San Antonio, Texas, 659 Meyer, H.O.A.: Report of the Secretary for.... , J r . , 1 3 7 Rosenberg, P.E.: Synthetic muscovite solid solutions in the system K2O-A1203-SiO2-H2O |  | | Journal (issue) | | Pseudomorphs from Brazos County, Texas Art Smith 9118 Concho Houston, Texas 77036 Introduction Large...in the BryanCol!~ge Stallon area of Brazos County, Texas. Thin, elongate cav111esparallel to the length...setting fire to he shaft and filling the entire mine with smoke. They also incurred the wrath of the...petrified wood, Turkey Creek, Bryan, Brazos County, Texas, photograph by Art Smith. Mexico While the...Antonio Mine) managed to mine into a water-filled fracture system that emptied into the mine, flooding |  | | Journal (issue) | | Art or Genuine Artifacts? www.rockngem.com THE MICA GROUP Accessory Minerals Extraordinaire R&G_Gray_Bluecover_0814...STAINLESS STEEL CABBING UNIT This machine is made in the USA for Kingsley North. Features an all stainless steel...Specimen) Colorado’s Mining History on Display......38 Mica: An Accessory Group ...................... 12 stunning...4-square-mile area (minus the 20 acres of the Spectrum mine) for collecting by the public. There is a pit toilet...The oldest sunstone mine in Oregon is the Spectrum, owned by Chris Rose. The mine was originally owned |  | | Catalog/List | | Cu UO PO/4 slightly radioactive. (Old Gunislake Mine Cornwall) a) green 3mm area on ropk, £3 ( b) IxhaJ...Apatite with Phlogopite Mica. (Possibly slightly radioactive)(Palabora Mine,S.Africa lxl £5 1x2 £10 ...sections in matrix with Eudialyte.Rare not Rich (Umba Mine,Lovozero Massif,Kola Russia) lxl £4 1x2 £7.50 239...silvery areas in matrix with Tellurite. (La Bambolla Mine Moctezuma, Sonora Mexico) lxl £10 14 x 54 ins £5...crystals or crystal sections in fine grained yellow mica. (Uis Damaraland Namibia) 1x1 £4 ( 3 or 4 crystals) |  | | Report (issue) | | SOME DEPOSITS OF MICA IN "THE UNITED STATES. By DOUGLAS B. STERRETT. INTRODUCTION. This paper is intended...intended to present descriptions of a number .of mica deposits examined in various parts of the United...information on the production, value, uses, and nature of mica is given only very briefly. Much assistance was...Electric Co.'s mine; Andrew T. Orr, of the Mica Products Co.; C. W. Bryant, of the Standard mine; L. R. Brown...general information on a number of mines in Grafton County and extended other kindnesses; M. M. Kilton, of |  | | Book | | ISSN: 0957-4433 Contents Asbestos 1 Barite Mica Nepheline syenite 10 Bauxite 19 Beryllium minerals...come not merely from one district but from a single mine. Thus the physical properties of many rocks and...to minerals as diverse as sylvite and feldspar. Mica and talc may be micronized, i.e. subjected to...used include kaolin, talc, calcium carbon- ate, mica, wollastonite and other mineral substances. Rather...eclipsing the mineral magnesite in some areas; the trona mine rather than the Solvay plant is now the main source |  | | Catalog/List | | grained mass in Calcite.(Dark Star Mine,Ravalli County, Montana USA) 1 x 14 £2.50 1x1 £4 1x2 £10 156 NATIVE...Siberia Russia) 486 MURMANITE Na (Ti Nb) SiO mauve mica like plates with Mg Arfvesonite In Felspar. (Alluaiva...in matrix (Union Carbide Mine, Wilson Springs Garland County, Arkansas USA) 1x1 £4 1x2 £7.50 360 PARATELLURITE...fairly sparse, green crusts on matrix. (San Miguel Mine Moctezuma Mexico) 1cm piece £ 5 5mm £3 WITH UNUSUAL...yellow crusts on matrix. (Outpost Mine, San Domingo Wash Maricopa County Arizona) Ixliins £4 107 CHLORARGYRITE |  | | Report (issue) | | and rocks of the tri-state border region— West Texas, southern New Mexico, and northern Chihuahua Kenneth...Geological Sciences, University of Texas at El Paso, El Paso, Texas 79968, USA Abstract—Industrial minerals...approximately two million people in the cities of El Paso, Texas; Ciudad Juarez and Chihuahua, Chihuahua; and nearby...Frasch sulfur production in adjacent Culberson County, west Texas. Halite, gypsum, and barite have also been...produced from magmatic-hydrothermal deposits in west Texas in previous years. Scoria continues to be produced |
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