 | | Journal (issue) | | Brandstetter photo) Garnet: Gem of the Ages ........................ 44 A colorful silicate group by Bob Jones...50th show by Helen Serras-Herman REGULAR COLUMNS Rock & Gem Kids .......................................Shop Talk .................................20 30 Rock Science ..........................28 What to Cut...advertisements. For this reason, advertisements appearing in Rock & Gem should be considered as requests to inquire...notice. 4 www.rockngem.com rg_toc_0914.indd 4 Rock & Gem (ISSN 0048-8453, USPS 486-290) is published |  | | Report (volume) | | Survey; Report, 1910-1914; Bulletin, no. 16. Montgomery, Ala. American Academy of Arts and Sciences:...Bulletin, nos. 23-25. Hartford, Conn. Delaware County Institute of Science: Proceedings, vol. 7, no....Chicago, 111. West Virginia Geological Survey: County Reports, Logan and Mingo; Boone; Wyoming and McDowell...14. Ancient auriferous gravel channels of Sierra County, California: Am. Inst. Min. Eng., Trans., vol....Preliminary concentration tests on Mesabi ores [Itasca County, Minnesota]: Minnesota Univ., School of Mines, |  | | Book | | Pennsylvania___ _ _ _ 1 _ 2 _ 2 1 CHAPTER 4 Maryland ... 3 CHAPTER 5 Virginia 4 1 CHAPTER 6 West...n g y e l l o w " c o l o r " i n y o u r pan. Maryland: M o n t g o m e r y, Frederick, H o w a r d ...Appalachians as well as crystals such as staurolite or garnet, specimens such a s gold nuggets, a n d a n assortment...assortment o f fossils. Photograph b y Maryland Board o f Natural Resources. 2 K e n t u c k y : Green...dollars at the noted locality of Cowee Valley, Macon County, North Carolina. An enthusiastic family found and |  | | Book (volume) | | commerce. Coarser gemstones, or those which are rock-like in character or abundance, are treated in still...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... Topaz, Opal. IMPORTANT GEMSTONES The Feldspar Group, Spodumene, Tourmaline, Sodalite and Cancrinite...Jadeite), Rhodonite, Idocrase (Vesuvianite), The Garnet Group. Quartz FAMILY GEMSTONES RarRE AND UnusuaL |  | | Book (volume) | | amethyst (left, upper group) which measures about 25 mm (1 in.) across. TOP GROUP. Green fluorite (121... Maine; round brilliant red-orange spessartine garnet (16.62 ct), Ramona, California; deep red cushion...Colorado; colorless scheelite (19.66 ct), Kern County, California; octagonal step cut violetish pink...Vivid blue matched benitoite gems from San Benito County, California, consisting of 52 benitoites and 75...gold. The necklace is 45 cm (18 in.) long. BOTTOM GROUP. Deep, spinel red oligoclase feldspar (5.04 ct) |  | | Book | | preparation by Capitol Communications, Crofton, Maryland. Printed in the United States by Bookcrafters...22:65-69 [Abstracts of the] FM-TGMS-MSA Symposium on Garnet (chairman: K. J. Wenrich) 24:61-68 Abstracts of...ADULARIA Adu Iaria from the Howard-Montgomery quarry, Howard County, Maryland (by J. S. White) 25:53-54 AFGHANISTAN...Iron-manganese phosphates of the Williams pegmatites, Coosa County, Alabama (by P. B. Leavens & T. A. Simpson) 6:66-73...ALICE GLORY HOLE The Alice glory hole, Clear Creek County, Colorado (by T. A. Hanson & W. B. Craft) 18:185187 |  | | Report (volume) | | Photogeology _______________ Popular and elementary _______ Rock descriptions____________ Study and teaching______...geology. Articles written for the layman. Listed by rock names and areas. Articles dealing with the educational...Survey and of other surveys. Articles on the chemical rock-forming systems; listed alphabetically. Subheadings...headings and under four of the subject headings to group the entries. Subheadings are in italic type and...heading) contains such subheadings as are needed to group the various entries. Typical subheadings for Maps |  | | Book (edition) | | from the Tourmaline Q ueen .1ine, Pala, San Diego County, California. From a pen-and-ink drawing by W. E...Opal. II 68 IMPORT ANT GEMSTONES The Feldspar Group, Spodumene, Tourmaline, Sodalite, Olivine (Peridot)...Jadeite), Rhodonite, ldocrase (V esuvianite), The Garnet Group. 199 246 III QUARTZ FAMILY GEMSTONES IV RARE...Frontispiece. Drawing of tourmaline and morganite group 1. Crater of Diamonds, Arkansas 2. Star of Arkansas...Mounce diamond crystal 5. Gibson's Ruby mine, Cowee Creek, North Carolina 6. Corundum Hill, North Carolina |  | | Report (issue) | | . . . . . . . . . . . . . . . . . . . . . . 1 County Listings. . . . . . . . . . . . . . . . . . . .... . . . . . . . 4 Mineral Localities Listed by County . . . . . . . . . . . . . . . . . . . . . . . .... . . . . . . . . . . . . . . . . . . 7 Beaver County . . . . . . . . . . . . . . . . . . . . . . . ... . . . . . . . . . . . . . . . . . 7 Box Elder County . . . . . . . . . . . . . . . . . . . . . . . .... . . . . . . . . . . . . . . . . . . 10 Cache County . . . . . . . . . . . . . . . . . . . . . . . |  | | Book (edition) | | commonly have several variants, such as Great Smoky Group, Great Smoky Conglomerate, Great Smoky Formation...the total of 4,284 new Terms were United States county and city Terms. Counties and Cities in the United...States Earlier editions had Terms such as Washington County and Portland for counties and cities of the United...for example: Washington County Arkansas and Portland Maine. Each new county Term can now autopost its...to counties was a major task. The scope of U.S. county and city Terms can now be clear even when they |  | | Book (volume) | | A Location Guide for Rock Hounds in the United States SOUTH DAKOTA This northwestern Great Plains state...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...438 A Location Guide for Rock Hounds in the United States CUSTER COUNTY AREA: The November Mine, 1 | | | Book (volume) | | amethyst (left, upper group) which measures about 25 mm (I in.) across. TOP GROUP. Green fluorite (121... Maine; round brilliant red-orange spessartine garnet ( 16.62 et), Ramona, California; deep red cushion...Vivid blue matched benitoite gems from Sai, Benito County, California, consisting of 52 benitoites and 75...gold. The necklace is 45 cm (18 in.) long. BOTTOM GROUP. Deep, spine! red oligoclase feldspar (5.04 et)...conventional open-pit methods and the enclosing rock crushed and treated to release the crystals. Red |  | | Report (issue) | | INTERIOR GEOLOGICAL SURVEY MINERAL RESOURCES OF ELKO COUNTY, NEVADA By Roscoe M. Smith Prepared in cooperation...district Burns Basin district-- -Carlin district Cave Creek district ----Charleston district_--Coal Mine district~...Contact district Cornucopia district - -Corral Creek district - Decoy district Delano district Delker...---Goose Creek -district Halleck district -.Harrison Pass district - -Hicks district . ' Hot Creek district...district '-Huntington Creek district Island Mountain district. Ivanhoe district Jarbidge district- --Kinsley |  | | Book (edition) | | largest groups of new terms have been U.S. county names; rock-formation names (mostly North American);...granite-granodiorite family was eliminated. Many specific rock types which had been autoposted narrower terms under...These include local geographic terms, U.S. county names, rock-formation names, and fossil names. Indexing...more than 12. The same applies to North American rock-formation names mentioned in the indexed literature... is the GeoRef term for the sedimentary rock; the same rock, when discussed as an economic commodity |  | | Report (volume) | | P., 15. California, Barstow quadrangle: Trenton group, Ordovician: Bowen, O. E., Jr. , 5. Clark, T. H...4. also Limestone; Dolomite; Western, Claiborne group: Miss. Phosphate. Geol. Soc., 2. California: Calif...described. Div. Mines, 1; Jenkins, O. P., Choctaw County, Highway 17 area: 3. Toulmin, L. D., Jr., 3. Minor:...analysis: KelH. D., 5. ler, W. D., 3. Talladega County, hematiteOklahoma, potash agstone, granite magnetite...ground water: Powham, C. E. ell, W. J., 4. Marengo County: Newton, J. G., 1. Core-drilling program, ChattanooMica: |  | | Report (volume) | | anonymous papers, placed at the end of Part I Co. county cos. · counties CORPORATE AUTHORS. Am G American...Board of Education Md C C Maryland Conservation Commission • Md G S Maryland Geological Survey Me St S...Post-Eocene formations: Smith (E A), 94d 06a Ripley group: Johnson (L C), 84 Rome quadrangle: Hayes, 02 ....Franklin Co.: Brush, 69b Leighton: Farrington, 02 Lime Creek, Claiborne: Cohen, 92 Selma: Hovey, 07d; Merrill...C), 45, 45a Bourgueticrinus alabamensis, Ripley group: De Loriol, 82 Calyptraphorus: Conrad, 57b Cambrian |  | | Report (volume) | | Conservation Commission Water Resources Circular. Little Rock, Ark. Asoc. Mexicana Ge6Iogos Petroleros Bol.-Asociaci6n...Md. Dept. Geology, Mines and 'Vater Res. BulL-Maryland Department of Geology, Mines and Water Resources...aquifers of the upper James River Valley, Brown County, South Dakota [abs.]: Geol. Soc. America Bull....). Wall-rock control of certain pitchblende deposits in Golden Gate Canyon, Jefferson County, Colorado:...1890-1956. Cretaceous section, Medina County, Texas, to Val Verde County, Texas, in San Angelo Geol. Soc. |  | | Report (issue) | | commercial borates. Lawsonite, first found in Marin county in 1895, has proved to be of great petrographic...nickel telluride, melonite, found in Calaveras County in 1867. New minerals and new mineral this is ...tributed throughout the State in small bodies or as rock-forming would be impossible to cite all of their...characteristic constituents of the metamorphic rocks. Garnet is a conspicuous gneiss may be rich in chlorite...products. The gem-bearing pegmatites of San Diego County have aroused special masses, interest. Many |  | | Journal (issue) | | the Secondary Deposits at Rock Creek, Missouri River, and Dry Cottonwood Creek Aaron C. Palke, Nathan D...FEATURES 72 Lab Notes Purple anhydrite • Pink pyrope garnet • Libyan Desert glass bangle • Atypical bead cultured...diamond • Starry night in diamond • Xenomorphic garnet in diamond • Arrow-patterned negative crystals...rhodochrosite • New tourmaline find in San Diego County • Vibrant green “Transvaal jade” • Misfit Diamonds...supply chain practices • Luminescent synthetic garnet-like crystals • Exhibits by the GIA Museum and |  | | Journal (issue) | | and Perilous R&G Kids Agate Facebook Groups for Rock Clubs FIELD TRIP: Mulligan Peak (AZ) Purple Agate...metallic sulfides we call “pri mary min erals”. This group of brightyellow crystals is from the Cozzo Disi.....28 It was my busiest show ever! by Bob Jones Rock & Gem Kids .............................................................................. 16 28 Rock Science ..................................... 26...advertisements. For this reason, advertisements appearing in Rock & Gem should be considered as requests to inquire |  | | Book | | milky quartz stems. Denny Mountain area of King County. Specimen from the collection of Cary A. Maykut...DESCRIPTIONS 21 ABBREVIATIONS 24 GLOSSARY 25 COUNTY INDEX OF MINERAL OCCURRENCES 29 MINERAL DESCRIPTIONS...(using a code explained on page 21) and a county by county list mentioning the nature of their occurrence...Parks and Monuments prohibit all collecting. state, county and city parks usually prohibit collecting. Please...PRECIPITATION WITHIN A ROCK MELT Minerals which have crystallized from a rock melt may exist as ear |  | | Report (issue) | | FRONT COVER PHOTO : Gold nugget from Dukes Creek, White County, weight 5 oz., 12 dwt., approx. 2x. BACK...approx. 1.5x. Lower left - Goethite from Pulaski County, approx. lx. Right - Magnetite crystal face showing.......................................... 111 Garnet Group ................................................................................ 118 Axinite Group ......................................................................... 119 iii Page Axinite Group ............................................... |  | | Book (edition) | | to the chemical formula, allegiance to a mineral group, symmetry and crystal structure as well as the strongest...chemical formula, structure (crystal system, space group, and unit cell dimensions), and at least some other...site occupancy. The Sb members of the tennantite group (2.G) will serve as a good example: tetrahedrite...registered in this book (e.g. in the amphibole group). For more detailed information see "Dana's System...abbreviations: Rep. (republic), prov. (province), co. (county), munic. (municipio), pref. (prefecture), dept |  | | Journal (issue) | | FEDERATION OF MINERALOGICAL SOCIETIES 48 A REAL ROCK SAW Offlc:411'9 Gemstone replica of a Wyoming...know if these tools are available now or not. Some rock shops might have them. If not, you could use something...Recently the Heins displayed their unusual art at a rock show in an Eau Claire, Wisconsin shopping mall which...paintings, in matching frames, were shown in a group of thirty-two, assembled on a large wooden rack...Winter Splendor. After that, as she pursued her rock hobby, this artist kept a close watch for stones |  | | Report (issue) | | 31 University of Nevada Press, Reno, Nevada 89557 USA Copyright © 2004 by University of Nevada Press Photographs... Majuba Hill Mine, Antelope district, Pershing County. N. Prenn collection. Photograph by J. Scovil....Goodsprings (Yellow Pine) Mining District, Clark County John C. Kepper 91 References 467 Contributors...Humboldt County and the crystalline quartz collecting area on Petersen Mountain in Washoe County, permission...Wahmonie district in 1846, and it is probable that hard-rock metal mining by Mormon settlers beginning in 1855 |
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