 | | Journal (article/letter/editorial) | | PEGMATITES OF EIGHT MILE PARK, FREMONT COUNTY, COLORADOXT E. Wrrr. HerNnrcu, Department of Mineralogy...The Eight Mile Park pegmatite district, three to twelve miles west of Canon City, Fremont County, Colorado...separate paper. 420 PEGMATITES OF EIGHT MILE PARK, COLORADO 42r area are flanked on the east by...Springs biotite schists by granite, aplite, and pegmatite. The pre-Cambrian structural elements trend uniformly...aplite sills in granite, (5) the attitudes of pegmatite sills in schist, and (6) the trend of the axis |  | | Journal (article/letter/editorial) | | PEGMATITES OF EIGHT MILE PARK, FREMONT couNTY, coLoRADO E. Wm. Heinrich, Deparlment of Mineralogy, Uniaersi...J/J 5t I 579 583 5d5 PEGMATITES OF EIGHT MILE PARK, COLORADO .).) I MINERALOGY GeNBnar, FnarunBs...FnarunBs On the basis of occurrence the pegmatite minerals may be divided into three groups: o 1. The common...subordinate constituents are oligoclase, garnet, schorl, magnetite, and chlorite. The rarer constituents...present at all, are small. fn the School Section pegmatite 1- to 6-inch vugs containing minute cleavelandrte |  | | Journal (article/letter/editorial) | | Lithium-Bearing Pegmatite in the Clear Creek District, CLEAR CREEK COUNTY, COLORADO In all of Colorado's...Recently a lithiumbearing pegmatite has been rediscovered in the Clear Creek district on the east flank of...of Mt. Evans. This pegmatite, the Bald Mountain tourmaline prospect, contains specimens of dark green and...of the pegmatite occur at the road cut. Mineral enthusiasts should be aware that the pegmatite is located...and unauthorized collecting is not allowed. The pegmatite was studied by the authors from July to September |  | | Journal (issue) | | MINERALOGICAL SOCIETY BULLETIN What the Heck is Pegmatite? (The Basics) by Bob Carnein Lake George Gem &...& Mineral Club News June 2019 Now retired to Colorado, Dr. Carnein was an active member of NMS when he...the first problem when defining what a pegmatite is. Pegmatite is the name of an igneous-rock texture...rock type. On the average, mineral grains in a pegmatite are more than 1 cm (about ½ inch) across (Bates...across occur at the Devils Hole mine, in Fremont County, Colorado). More typically, they are on the order |  | | Journal (article/letter/editorial) | | Two Point claim, Pikes Peak batholith, Teller County. The Collector’s Edge specimen, Jeff Scovil photo...Mail Stop 150, Box 25046 Federal Center Denver, Colorado 80225 pmodreski@usgs.gov C olorado is, of course...prohibitions on collecting or to private land or mining claims for which permission has been obtained....been written as guides to mineral collecting in Colorado. A classic, which went through three major editions...1951 version with a slightly different title), is Colorado Gem Trails and Mineral Guide, by Pearl (1951, |  | | Journal (article/letter/editorial) | | ZONING IN PEGMATITE DISTRICTS* E. Wu. HurNnrcrr, University of Michigan, Ann Arbor, Michigon ABSTRACT...ABSTRACT fn numerous pegmatite districts the size, shape, external and internal structure, texture and mineral...mineral content of an individual pegmatite can be shown to be functions of the distance of the body from...Widespread and intensive field investigations of pegmatite mineral deposits during the last 15 years have...attention has been directed toward the study of pegmatite districts or provinces and toward relating the |  | | Journal (issue) | | friends. W evada was experiencing a boom in gold mining and exploration was as at a high point. We agreed...love fo r the remote Nevada deserts and the old mining districts. We also served in the military during...Rediscovered: The Royal Gorge No. 1 Mine, Eight Mile Park, Fremont County, Colorado Mark Ivan Jacobson Perth Pouch...tourmaline pegmatite near Royal Gorge (Jacobson 1997), Eight Mile Park, Fremont County, Colorado. This photograph...colored tourmalines Ben Roesch 6 14 Southern Cross Colorado Springs, CO 80906 (Sterrett 1909). The purpose |  | | Journal (article/letter/editorial) | | FEBRUARY, 1965 THE CHIEF LITHIUM PEGMATITE, DEVILS HOLE, FREMONT COUNTY, COLORADO1 E. Wu. HnrNnrcu eNo...mately one airline mile north of the well-known Devils Hote (lingneim) pegmatite (Hanley et aI.,1950)...on the south side of the Antelope Gulch, about I mile west of the junction betweenAnterope and E a s t...) . and chemicals corporation in canon city, colorado. However, Iithium minerals were rumored to have...found in this area as early as 1956. The Chief pegmatite was exploredfor lithium and berl,llium in the |  | | Journal (article/letter/editorial) | | PEGMATITE MINERALS OF THE UNITED STATES DAVID M. SEAMAN American Museum of Natural History, New York...The common, black, iron rich variety is known as schorl. The colored tourmalines or lithium tourmalines...to twenty or more feet in length and to six or eight feet in height and width. Black tourmaline is the...found in all types of pegmatite from the common granite type to the lithium pegmatite. Many localities have...near Bedford and Overlook, New York; near Golden, Colorado and elsewhere. A fine crystal measuring 4x4x10 |  | | Journal (article/letter/editorial) | | muscovite,pe: perthite, pt: petalite, qu: quartz, sc: schorl, sp: spodumene, to: tourmaline,tp: topaz,u: uraninite...morethanaccessory amounts. ,4bscissa(individual pegmatite sectionswith zones and units found within the...part), XX: Van de Made's pegmatite(western part), XXI: Kaliombo (Berger's pegmatite). GENESISAND CRYSTALLIZATION...importance,excludingthe accessories.In the Van de Made pegmatite there is a certain amount of doubt as to the true...rock-type,as developedin pegmatitesof the Karibib district, is alsocommonin late-tectonicintrusivemassifsof |  | | Journal (issue) | | collection of & FOSSIL SHOW • 1305 Memorial Ave. (1 mile west of 1-91) • W". SPRINGFIELD, ~ Herb & Monika...well-known Ukrainian heliodor occurrence and its many pegmatite minerals. Like its predecessor locality issues...history, geology, mineralogy and a discussion of pegmatite origins, all with exceptional photography of many...is interesting and well diagramed. Chapter 4, Pegmatite Minerals, extends 72 pages and is further divided...Huizing, 534 I Thrasher Dr, Cincinnati OH 45247 USA Please, make checks payable to Mineralogical Almanac |  | | Journal (article/letter/editorial) | | is from Leiper’s quarry at Springfield, Delaware County, Pennsylvania (Peters 1984). When the spessartine...to 7 cm across occur near Middletown, Middlesex County, and massive spessartine and relatively small crystals...localities in Figure 2. A classic Avondale, Delaware County, Pennsylvania, spessartine specimen with a major...HUK [OL *PU JPUUH[P4PULYHS:VJPL[` Delaware County, Pennsylvania. Detailed work by Lindsley and Peters...States are from pegmatites of the Amelia district, Amelia County, Virginia (Sinkankas 1959, 1997). Here |  | | Journal (article/letter/editorial) | | December 2014 THE FENGJIASHAN WOLLASTONITE MINE, DAYE COUNTY, HUBEI PROVINCE, CHINA. B. Ottens, Klingenbrun-Banhof...visited the Fengjiashan Wollastonite mine in Daye County, and a huge number of well-developed minerals have...kilometers south of Bancroft, near L’Amable, is a pegmatite locality well known for dravite specimens. Fodi...NEW WISCONSIN MINERALS FROM THE NINE MILE PLUTON, MARATHON COUNTY, WISCONSIN. T. W. Buchholz1, A. U. Falster2...the south central portion of the Proterozoic Nine Mile Pluton, the youngest and most silicic of four plutons |  | | Journal (issue) | | by Vandall King. from Orchard Dome, Fort Bend County, Texas Art Smith 9118 Concho Houston, Texas 77036...77036 • In I 969 and 1970 Duval's Frasch sulfur mining operations at Orchard Dome were being geared down...1 White fluorite, 2 mm, Orchard Dome, Fort Bend County, Texas, photo by the author. ,/" 2 Minero!...Mine: the Royal Gorge No. 1 Mine, Eight Mile Park, Fremont Co., Colorado Mark Jacobson 112 N. Lemans St...tourmaline mine of the Colorado miner, C. A Beghtol. This long lost pegmatite was described by Douglas |  | | Show/Event (guide) | | cathodoluminescence to the evolution of the Black Mountain pegmatite by]. Maloney and M. A Wise 2:15 S o l i d solution...2:45 R a r e - e a r t h mineralogy of the Mohave County pegmatites, NW Arizona byS.L. Hanson, A U. Falam;... 4:15 Natromontebrasite from the Meyers quarry, Fremont County, CObyM. I. Jacobson,.1, W Nizamoff,A. U. Falster...10:30 T h e Fengjiashan Wollastonite mine, Daye County, Hubei Province, China by B. Opens 10:45 N e w...new Wisconsin minerals from the Nine Mile Pluton, Marathon County, Wisconsin by T W BuchholzA. U. Falster |  | | Journal (issue) | | Uzbekistan; and the Emma Mine, Little Cottonwood District, Salt Lake Co., Utah. In most locations, tungstenite...News, P.O. Box 2043, Coeur d'Alene, ID 83816-2043 USA Phone: 208-664-2448 • 3 E-mail: lream@comtch.iea...longer possible and there really is no place to park in the immediate area. Best bet is to have a non-collecting...V anadiun1 l\'line, l\fagnet Cove, Hot Springs County, Arkansas is Reclaimed and Collecting Ceases...the day that open-pit mining would reveal its expected buried treasures. Mining by Union Carbide for vanadium |  | | Book (volume) | | ...........................................59 Colorado ...............................................................548 Table of Maps Page Alabama County Map ...................................................................................4 Alaska County and Stream Map ..................................Co. Mining Districts ............................................................22 Arizona County Map.........................23 Arizona – Cochise Co. Mining Districts .................................... |  | | Book (volume) | | ...........................................47 Colorado ................................................rights, so remember you were told. If in doubt, a county map will tell you who the legal owner is. Good...gemmy qualities for cutting and polishing. AUTAUGA COUNTY PRATTVILLE, N. 6 mi., and just E of the Birmingham...were well known to prehistoric Indians.) BARBOUR COUNTY BAKER HILL, SE 1 mi. : 1 in a deep ravine, as a...deep red to variegated⎯ocher. BIBB COUNTY GENERAL AREA: c county gravel pits along the Cahaba R.⎯gemmy |  | | Book (volume) | | ...........................................47 Colorado ................................................rights, so remember you were told. If in doubt, a county map will tell you who the legal owner is. Good...gemmy qualities for cutting and polishing. AUTAUGA COUNTY PRATTVILLE, N. 6 mi., and just E of the Birmingham...were well known to prehistoric Indians.) BARBOUR COUNTY BAKER HILL, SE 1 mi. : 1 in a deep ravine, as a...deep red to variegated⎯ocher. BIBB COUNTY GENERAL AREA: c county gravel pits along the Cahaba R.⎯gemmy |  | | Report (volume) | | similar to the main part of the body. This type of pegmatite is of limited economic value. About 25 percent...center of the pegmatite. As many as five distinct units, or zones, parallel to the pegmatite wall-rock contact...contact have been noted in an individual pegmatite. In some pegmatites fracture-filling units of quartz...development. Feldspar reserves are adequate to continue mining on the present scale for many years. No beryl deposits...mica of the rock. The average beryl content of pegmatite rock in the Middletown area is probably between |  | | Book (volume) | | 56 ct), Sweet Home Mine, Colorado; colorless scheelite (19.66 ct), Kern County, California; octagonal...Vivid blue matched benitoite gems from San Benito County, California, consisting of 52 benitoites and 75...events to bring the history of North American gem mining up to date. Here, then, is the latest, most complete...and interviews with persons actively engaged in mining gemstones. Pertinent references are furnished throughout... most likely in Canada. Systematic large-scale mining of sapphire-bearing gravels in Montana is beginning |  | | Book (volume) | | Isle Royale National Park were rendered by Superintendent John G. Lewis and Park Historian Lloyd Abelson...Furcron, Chief Geologist of the Department of Mines, Mining and Geology; on the State of Michigan by Robert...Kobuk jade locality. Descriptions of San Diego County, California, gemstones and the mines in which they...the generous assistance of many residents of that county. My special thanks are extended to Elbert H. McMacken...orthoclase crystal Map of Amelia, Va. An amazonite pegmatite Dr. George F. Kunz California kunzite crystals |  | | Report (issue) | | acknowledgments.--------.---------------------Pegmatite mining in the region...________-__-__--__.______-_-_-General..._____________________ Dawley Canyon area, Elko County-______--_--_------_-_-_-_-_---_-_ Location and...dikes_____________-_-_-_-__------___-_-___-___-_ Pegmatite-aplite relations....___-_-_---_---_-___-__---__-_-_...Pass. -__-_--__--_---__--_--_--__------White Pine County.-._____________________________________________...171 172 172 173 nt IV CONTENTS Page Pershing County.-_____________---___-____--___________-__--__---Lakeview |  | | Book (edition) | | interesting facts about the people involved in mining, current price lists of various stones, and numerous...from the Tourmaline Q ueen .1ine, Pala, San Diego County, California. From a pen-and-ink drawing by W. E...information is included on the persons involved in mining the deposits, with dates and other pertinent information...W. pegmatite mine, Pala, California 17. Mack mine, Rincon, California 18. Beryl-bearing pegmatite, Baja...Ramona, California 21. Gem-bearing pocket in pegmatite, Baja California 22. Drawing of topaz crystal | | | Book (volume) | | rhoColorado; eolorless scheelite (19.66 cc), Kern Cowny, California;...Vivid blue matched benitoite gems from Sai, Benito County, California, consisting of 52 benitoites and 75...and interviews with persons actively engaged in mining gemstones. Pertinent references are furnished throughout... most likely in Canada. Systematic large-scale mining of sapphire-bearing gravels in Montana is beginning...Cantlin, Ellis, ID; Jeannette B. Carillo, Gen1 Center USA, El Paso, TX; Gary Christopher, The Prospectors Cache |
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