 | | Book | | .3 COLORADO. of COLORADO. J. S. l GEORGETOWN, COLO. GEORGETOWN COURIER PRINT. 1887. 3 Bancroft...From a mineralogical point of view the wealth of Colorado exceeds that of In the metallic minerals almost...to in the following pages Proceedings of the Colorado Scientific Society. Proceedings of the Academy...the U. S. Geological Survey. J. GEORGETOWN, COLORADO, January, 1887. S. RANDALL. : MINERALS...gravel of streams and in veins. The veins of Gilpin County are especially noteworthy for the amount of gold |  | | Book (edition) | | and often gems can be found. valuable For the mountain ranges and level for the ist to States contain...and ice, every blood red glow, every touch of green, blue, gold or royal purple. Gem stones have been...and Washington occur the many types of agate, opal and petrified this region is noted. The agate...slates, fine grained and often sprinkled with tiny golden flakes of mica, and quartzites. Corundum, — —...associated with such rocks. Because hard rock mining amateur will usually get is tedious and expensive |  | | Journal (article/letter/editorial) | | with its representation of mining tools clearly proclaim Montana’s mining origins. Montana’s production...published describing the occurrence, collecting, mining, and cutting of the two state gemstones. Figure...2. Granville Stuart established Montana’s first mining camp at Gold Creek in 1860. Geologic Provinces...MICHAEL J. GOBLA 19055 East Bethany Place Aurora, Colorado 80013 gobla@copper.net Unless otherwise noted...Indian Queen mine ca. 1905 at Farlin, Beaverhead County. 208 ROCKS & MINERALS Downloaded by [University |  | | Report (volume) | | and sapphire are considered precious gems. Some opal is precious, but most varieties are semiprecious...transparent stones. The desired hues are blue, rose, green, and true canary yellow in the diamond; pigeon-blood...ruby; cornflower blue in the sapphire; and grass green in the emerald. Most diamonds, however, are colorless...the term "emerald, " to chrysocolla and all other green stones (Smith, 1949, p. 175). Corundum was referred...changing to orange brown, smoky quartz to yellow, pale-green beryl to blue, violet corundum to rose pink, and |  | | Journal (article/letter/editorial) | | Associated Minerals Figure 1. Location map for Golden, Colorado, prepared by William Besse. All photos by...are well represented in Colorado. In particular, the Table Mountains near Golden have been known as a source...geochemist with the US.Geological Survey in Boulder, Colorado. His most recentfeature articlefor Rocks & Minerals...Moss Agatefiom the Del Norte Area, Saguache County, Colorado” and appeared in the July/August 2003 issue...with much of North Table Mountain having been recently acquired by Jefferson County Open Space, a governmental |  | | Report (volume) | | Minerals of Colorado: A 100- Year Record By EDWIN B. ECKEL GEOLOGICAL SURVEY BULLETIN 1 1 14 A...knowledge____________________________________ Future of Colorado mineralogy______________________________________...mineral localities and metallic mineral deposits of Colorado ________________________________ In pocket III...mineral localities and metallic mineral deposits of Colorado, has not been included in this reprint. Many of...especially Fischer and others, 1946). MINERALS OF COLORADO: A 100-YEAR RECORD By EDWIN B. EcKEL ABSTRACT |  | | Book | | desires. Sometimes the talus slopes at the base of a mountain contain rich indications of a dike or sill above...famous was the single beryl stone found in Oxford County in Maine that weighed 18 tons and was 18 feet in...hardly be forgotten. Jade comes in various shades of green, but its fibrous quality and its toughness make...it a unique stone. Turquoise is blue, blue-green and green; but, again, this opaque mineral with its porous...porous structure has a distinctive look. Opal in its most elegant form is a semitransparent stone. Again |  | | Report (volume) | | ............................................. Colorado........................................................................................ 102 District of Columbia ....................................to refer to Geological Survey Bulletin 507, "The mining districts of the western United States," and to...abundant it may have been completely exhausted by mining or quarrying. Deposits of minerals that are widely...because they occur in sufficient quantity to warrant mining for their usual products, but because they furnish |  | | Book (volume) | | chert, translucent chalcedony, jasp-agate and common opal, rivaling in beauty the Arizona agatized wood. This...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...townships of Washington, Virginia, Bedford, Jackson, Jefferson, Bethlehem, Monroe and Clark; on regional knobs...CUYAHOGA COUNTY CHAGRIN FALLS (on Geauga Co. line), area quarries⎯oilstone. DELAWARE COUNTY DELAWARE |  | | Book (volume) | | chert, translucent chalcedony, jasp-agate and common opal, rivaling in beauty the Arizona agatized wood. This...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...townships of Washington, Virginia, Bedford, Jackson, Jefferson, Bethlehem, Monroe and Clark; on regional knobs...CUYAHOGA COUNTY CHAGRIN FALLS (on Geauga Co. line), area quarries⎯oilstone. DELAWARE COUNTY DELAWARE |  | | Book (edition) | | and county. and the many maps included book contain such specific details as farm roads, mountain paths...yellow and preferred green gems Romans scorned others. all gem to identify green turquoise was In...microscope. is — — A few gem materials notably, opal and obsidian are amorphous, lacking crystal structure...Emerald — makes a stone for example, the grass-green variety of 12 / heryl — is How to identify...with light such as creates the unique beauty of opal or labradorite, the starry splendor of star sapphire |  | Collins, Donley S., Cobban, Robert R., Foord, Eugene E., Murphy, Jack A. (1989) Bibliography for update and revision of U.S.G.S. Bulletin 1114, Minerals of Colorado -- a 100 year record, by Edwin B. Eckel, Part A - Paper copy --Bibliography data file disks. Open-File Report Vol. 1989 (89-206) US Geological Survey doi:10.3133/ofr89206a | Report (issue) | | Survey Denver, Colorado Department of Geology, Denver Museum of Natural History Denver, Colorado NOTE FOR...revision of U.S.G.S. Bulletin 1114, Minerals of Colorado A 100 year record, by Edwin B. Eckel By Donley...Prepared in cooperation with Friends of Mineralogy - Colorado Chaptar, and the Denver Museum of Natural History...references dealing with the mineralogy of the state of Colorado. It is part of a more than 10 year effort to update...and revise U.S.G.S. Bulletin 1114, Minerals of Colorado: A 100 year record, by Edwin B. Eckel (1961). |  | | Book (volume) | | rocks are exposed as thick bands around the entire mountain system. The rising granite mass intruded the famed...an inexhaustible supply of cold artesian, Rocky Mountain snow melt water. Harney Peak is the crest of the...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...tributary gravels, etc.petrified wood, wood opal. CORSON COUNTY LITTLE EAGLE: area ridges, slopes, stream |  | | Report (volume) | | it helpful to refer to Survey Bulletin 507, "The mining districts of the western United States," and to...abundant, it may have been completely exhausted by mining or quarrying. Deposits of minerals of wide distribution...because they occur in sufficient quantity to warrant mining for their usual products but because they furnish...A. F. Rogers, Stanford University, Palo Alto. Colorado.........Prof. R. D. George, Boulder. Connecticut...See Bauxite and Hallpysite. Asbestos. Tallapoosa County, with corundum deposits near Dudleyville; not found |  | | Journal (issue) | | Three Articles The Tonopah-Belmont mine, Maricopa County, A rizona by G. B. Allen & W. Hunt 139 James...related minerals from the Table Mountain lava flows near Golden, Colorado ................................thorough review of the history, including many antique mining photos and engravings, and many detailed maps showing...r iz o n a George B. Allen Route 6, Box 32 Golden, Colorado 80403 W illiam Hunt 10350 Andover Avenue Sun...Ag-Au district of Maricopa County in west-central Arizona. The primary property in the district is the |  | | Book (edition) | | MARIN COUNTY FREE LIBRARY 3 1111 00289 4184 \ I s Fifth Revised Edition A complete, state-by-state...included contain such specific details as farm roads, mountain paths, stretches of stream beds, and easily identifiable...Maryland; Professor Richard Pearl of Colorado Springs, Colorado; and Professor Jack Hanahan of Belmont...North Carolina, a big diamond or two in Arkansas, opal in Idaho, and so on. Old locations suddenly are...scorned yellow and preferred green gems to all others. In Renaissance times, green turquoise was greatly admired |  | | Book | | Petrified Forest Trails Arizona Gem Trails and the Colorado Desert of California High Tension (A Biography)...Petrified Wood 131 Characteristics of Agates; Opal, Queen of the Gems; Petrified Wood; Commonly Occurring...\merica Alabama Alaska Arkansas Arizona California Colorado Connecticut Delaware Florida Georgia Hawaii Idaho...Family Gemstones The Various Names and Forms of Agate Opal and Its Varieties Recommendations for Use of Polishing...quartzite, rock crystal, amethyst, chrysoprase, opal, etc.), serpentine, and steatite (massive talc) |  | | Book (volume) | | Furcron, Chief Geologist of the Department of Mines, Mining and Geology; on the State of Michigan by Robert...El Paso, Texas. Information on the Virgin Valley opal deposits was given by G. Keith Hodson of Scottsdale...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...Diamond, Corundum (Ruby and Sapphire), Beryl, Topaz, Opal. IMPORTANT GEMSTONES The Feldspar Group, Spodumene |  | | Book (volume) | | measures about 25 mm (1 in.) across. TOP GROUP. Green fluorite (121.39 ct), Westmoreland, New Hampshire;...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...Dosen ONN/ QBI96-40247 Trade Distribution by Mountain Press Publishing Company P.O. Box 2399, Missoula...events to bring the history of North American gem mining up to date. Here, then, is the latest, most complete |  | | Report (issue) | | Cross section through Crooks Gap area, Fremont County, Wyo__ __________-______-___--_--__------------_...Sketch map showing location of Ralston Creek and Golden Gate Canyon districts with respect to intermediatescale...____________________ 57. Cross section through Golden Gate fault, near Morrison, Colo____-_______-__...-_---____.-_________----_60. Marysvale district, Piute County, Utah, showing relation of mine area to...commonly occurs late in the structural history of a district. INTRODUCTION This report is one of a series |  | | Journal (article/letter/editorial) | | Plant Fossils In the Denver Formation, Lakewood, Colorado AN UNUSUAL OCCURRENCE OF WELLD E V E L O P E...for a housing development in Lakewood, Jefferson Coun ty, Colorado. Heulandite replacements of fossil seeds...Geological Survey Box 25046 Federal Center Denver, Colorado 80225 tween Union Boulevard and Kipling Parkway...Mineralogy Symposium on Colorado Minerals (Modreski, 1982) held at the Denver/Rocky Mountain Federation Gem and...Paleocene lava flows; Green Mountain, capped by the younger Paleocene Green Mountain Conglomerate; the "Dakota |  | | Book | | authorHouse® Table of Contents Introduction Foreword * Colorado Gemstone-Aquamarine Vii Vili Fossil-Stegosaurus...Fossil-Belemnite Soil-Greenwich Loam Series 29 30 31 * District of Columbia Dinosaur-Capitalsaurus fo, Fossil-Petrified...Metal-Silver Precious Gemstone-Virgin Valley Black Fire Opal Semiprecious Gemstone-Iurquoise Rock-Sandstone Soil-Orovada...world’s largest consumer of red iron ore. Iron ore mining ceased in Alabama in 1975 due to less costly imports...Alabama are especially concentrated in the Red Mountain Formation from Bibb and Tuscaloosa counties, extending | | | Book (volume) | | measures about 25 mm (I in.) across. TOP GROUP. Green fluorite (121.39 et), Westmoreland, New Hampshire;...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 |  | | Journal (article/letter/editorial) | | Although Colorado may be most noted for rhodochrosite or amazonite, the many varieties and associations...a k e w o o d , Colorado 80225 DIANNE L. K I L E 333 S a l e m Street Aurora, Colorado 80011 C O L O...above sea level; with more than eight hundred mountain peaks exceed ing 11,000 feet, the average elevation...and J. A. Mur phy for an update to Minerals of Colorado: A 100-Year Record (Eckel, 1961). 374 ROCKS... Quartz was a familiar gemstone to many early Colorado residents, as documented by an extensive body |  | | Journal (issue) | | IN A GHOST TOWN 16 Thomas W. Moore UTAH'S FIRE OPAL 22 Earl Spendlove HAPPINESS IS A HOUSEBOAT 24...hardcover, large format, $12.75. NEVADA GHOST TOWNS AND MINING CAMPS by Stanley W. Paher. Covering all of Nevada's...Nevada's 17 counties, Paher has documented 575 mining camps, many of which have been erased from the earth...History by T. H. Wafkins. This 400-year epic of the Golden State, from the coming of the Spaniards to our...The San Luis Rey River in California's San Diego County played an important part in the history of the |
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