 | | Report (issue) | | the cover—Turquois crystals from Lynch Station, Virginia; x ca.; pho tograph by Neal Ycdlin; color plates...C. A. Michael. COLD NUGGET FROM SPOTSYLVANIA COUNTY: Longest dimension approximately 13 cm., photograph...of Virginia R. V. DIETRICH* Professor of Geology and Associate Dean of Arts & Sciences, Virginia Polytechnic...Polytechnic Institute Research Division Bulletin 47 Virginia Polytechnic Institute, Blacksburg, Va. 24061 *... © R. V. Dietrich and the Research Division of Virginia Polytechnic Institute, 1970 Printed and bound |  | | Report (issue) | | pegmatite in granite, Short Tom Smith mine, Rockingham County, N. C______ ____ ____________________ _______________________...pegmatite and granite, E. R. Self mine, Gaston County, N. C____________________ 6. Sinuous discordant...bulge in the hanging wall, Knight mine, Rockingham County, N. C- ~ -7. Sharp hanging-wall contact, Knight...granite underlain by schist, Hawkins mine, Stokes County, N. C _ _ _ _ _ _ __ _ _ __ _ _ _ _ _ 9. Same granite...and other units in the Big Bess pegmatite, Gaston County, N. C _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __ |  | | Journal (issue) | | on limestone along r~:t~JQ.\{t;_t:l'!'P_erland County, 5 miles southwest of Carlisle. Photo courtesy~'of... Greene County, with 12 major underground mines planned, may become the "numero uno" county for coal...headquartered at the U.S. Geological Survey in Reston~ Virginia. The NCIC is specifically dedicated to hunt for...A wooded area southeast of Colebrook in Lebanon County contains a unique geologic feature. An unusual...- Located in the woods north of Lawn in Lebanon County is this unusual example of the weatheri ng of diabase |  | | Journal (article/letter/editorial) | | Occurrence in Carroll County, Georgia" (November/December 1988). Banks County 184 ROCKS & MINERALS...Bentley provided many of the photographs. Baldwin County Milledgeville district—between the State Sanitarium...pit—east of S.R. 243 near the Baldwin-Wilkerson County line: kaolinite (Martin and Stafford, 1972). Cheatham...property—Route 3, Commerce, 4.8 km from the Jackson County line, 8 km east of Commerce on S.R. 59, and 0.8...[University of Calgary] at 09:55 07 August 2017 Barrow County Arnold mine—1.6 km northeast of Statham, near the |  | | Journal (article/letter/editorial) | | low-temperature limit of its stability field. Sapphirine-enstatite geothermometry indicates (minimal) equilibration...agreement with relatively low Al2O3 contents in enstatite near 4.4 wt. %. Chemical dating of monazite gave...probably correlates with partial retrogression of enstatite and sapphirine to the assemblage anthophyllite-chlorite...et al. 1969). The presently studied sapphirine-enstatite rocks with relict spinel, equilibrated near the...granulite-facies, compatible with the assemblage sapphirine-enstatite. In addition to this, the sapphirine rocks described |  | | Book | | international, supplying the Gulf Coast states of the USA, the south-east of England and the north European...phosphate use in detergents in (a) Europe and (b) the USA (Harries-Rees, 1992). __ ~_1_6__~11L ________...view, heavily populated areas of the south-eastern USA and the north European coastal plains also lack convenient...Figure 3.3 Major clay deposits of the south-eastern USA (from Harben and Bates, 1990; modified after Stack...in the St Austell Granite (adapted from Cornwall County Council Minerals Plan, with additional information |  | | Journal (article/letter/editorial) | | reasons for regarding the thick conglomerate (Ridgeway conglomerate) on the south side of the bay as...Director showed an erratic boulder of norite (enstatite-gabbro), probably glacially transported from the...still absorbed in this way along the foot of the Ridgeway. The Director reminded the members of the numerous...left the hotel at 9. I 5, and drove along the Ridgeway to Pembroke, where time was spared for an inspection...Mewsford Point there was seen a fine boulder of enstatite-diabase weighing about 32 cwt.: it is one of the |  | | Report (volume) | | General features____________________________ Coosa County _________ ____________________ Randolph County...Cherokee County_____________________________ 72 Elbert County _____________________________ 75 Hall County__...County_______________________________ 76 Hart County. ___ __ __________________ 77, Lumpkin and Union counti...___________ S3 Pickens County _______-______________________ 83 Rabun County-_____________________________...____________ 86 Troup County ________________________________ 86 Upson County _______________________________ |  | | Journal (article/letter/editorial) | | results of chemical analyses of the olivine, enstatite, chromian diopside, and chromian spinel from that...widely charactetize nodule inclusions-olivine, enstatite, chromian diopside, and chromian spinel. An analysis...present are dominantly olivine (Table 4, No. g), enstatite (Table 5, No. 8), chromian diopside (Table 6,...but others contain pale-greenchromian diopside. Enstatite is sparsein all the specimens;in fact the group...that chromian diopside is more abundant than enstatite. Another group of samples is from the ohia Lodge |  | | Journal (article/letter/editorial) | | olivine, chromite, pyroxene (diopside/enstatite), (diopside/enstatite), magnetite, serpentine and in the...augite, and enstatite. An overwhelming majority of pyroxenes (about 85%) is composed of enstatite and about...about pigeonite, diopside and enstatite. An overwhelming majority of pyroxenes (about 85%) is composed of...rare (1%–2%). Pyroxenes occur in the 0.1–0.5 mm enstatite and about 12%–15% of diopside. Augite and pigeonite...chemicalcomposition compositionofofenstatite enstatite (En ) is typical for minerals fromgroup, this |  | | Journal (article/letter/editorial) | | ides, wulfenite, cerussite and quartz. Color Ridgeway zinc green, biaxial (-), 2V:88', g r e e n ,X...rvith wulfenite, olivenite and hyalite. Color Ridgeway sulfate green, biaxiai (f ),2V:88", pale blue...amphibole equivalents of the pyroxenes diopside and enstatite, and recently Gibbs, Bloss and Shell have synthesized...proto-amphibole, the structural equivalent of proto-enstatite. So far there has been no certain discovery of...manganese nodules. VONSENITE Cnmlr's OF MONTEREY COUNTY, CALIFOIi.NIA W. CnBsrrnnex, CaliJornio l)itision |  | | Book | | CHAPTER 4 Maryland ... 3 CHAPTER 5 Virginia 4 1 CHAPTER 6 West Virginia 5 CHAPTER 7 Kentucky 6 CHAPTER...Virginia's noted Rutherford Mine. Photograph by Dr. Virginia Lee Blackford. ical pearls in delicate pastel...dollars at the noted locality of Cowee Valley, Macon County, North Carolina. An enthusiastic family found and...the well known old Rutherford mine in Amelia County, Virginia, and found bright spessartine garnets, glowing...green gem spodumene, was discovered in Alexander County, North Carolina, in 1880 and named for one of its |  | | Book (volume) | | 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...Guide for Rock Hounds in the United States CUSTER COUNTY AREA: The November Mine, 1.2 mi. SE of the Needles...of rd. a few yds., outcropRose Quartz. DOUGLAS COUNTY CORSICA, S on US 281 to Armour, area rd. cuts, |  | | 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...townships of Washington, Virginia, Bedford, Jackson, Jefferson, Bethlehem, Monroe and Clark; on regional...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 |  | | 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...townships of Washington, Virginia, Bedford, Jackson, Jefferson, Bethlehem, Monroe and Clark; on regional...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 |  | | Book (volume) | | 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...Cantlin, Ellis, [D; Jeannette B. Carillo, Gem Center USA, EI Paso, TX; Gary Christopher, The Prospectors Cache...AZ; Richard A. & Tresa L. Kosnar, Golden, CO: Virginia & Larry Kribs, Desert Dog Mines, Bend, OR; Guy...Resources, Vancouver, BC; Barbara L. Muntyan, Ouray County Historical Society, Ouray, CO; Merrill O. Murphy |  | | Journal (issue) | | iron mines in the U. S., at Sterling Lake, Orange County, New York, are nQw closed, perhaps never to be...and Freeman zircon mines near Tuxedo, Henderson County, North Carolina. Inasmuch as it is faT more abundant...the nugget across the river or over in the next county. In supporting "Rocks and Minerals" whether with...the District but a large area of Maryland and Virginia also. The sedimentary aeposit in this case is...half was interested in that specimen. Said she, "Henry, ,vhere in the world did you get it? Such beauty |  | | Report (volume) | | American Geology 1952 and 1953 By RUTH REECE KING, VIRGINIA M. JUSSEN, JOHN S. POMEROY, and VSEVOLOD L. SKITSKY...AMERICAN GEOLOGY 1952 and 1953 By RUTH REECE KING, VIRGINIA lVL JUSSEN, JOHN S. POMEROY, and VSEVOLOD L. SKITSKY...Chicago. _ . Los Angeles County Mus. Quart.; Sci. Ser., Paleontology-Los Angeles County Museum Quarterly; Science...Highways Rept.-Virginia Department of Highways Report. Richmond, Va. Va. Jour. Sci.-Virginia Journal of Science...Washington, D. C. W. Va. Acad. Sci. Proc.-West Virginia Academy of Sciences Proceedings. Morgantown, W | | | Book (volume) | | Vivid blue matched benitoite gems from Sai, Benito County, California, consisting of 52 benitoites and 75...Cantlin, Ellis, ID; Jeannette B. Carillo, Gen1 Center USA, El Paso, TX; Gary Christopher, The Prospectors Cache...AZ; Richard A. & Tresa L. Kosnar, Golden, CO: Virginia & Larry Kribs, Desert Dog Mines, Bend, OR; Guy...Resources, Vancouver, BC; Barbara L. Muntyan, Ouray County Historical Society, Ouray, CO; Merrill 0. Murphy... 15 Figure 6. Dallas Gem Mine in San Benito County, CA........................................... |  | | Report (volume) | | ............................................. Ridgeway mill area.......................................records of Trinity County in Weaverville, Siskiyou County in Yreka, and Humboldt County in Eureka, which...mine owners, and county officials. Particularly helpful in the work were Mr. Henry Carter, Mr. George...The Abrams also occurs in a small area near the county-line ridge in the headwaters of the North Fork...peridotite (a rock originally composed of olivine and enstatite) and small amounts of serpentinized dunite (a |  | | Report (issue) | | The system Na2O-Al2O3-6SiO2 (albite)-MgO-SiO2 (enstatite)-2MgO-2Al,O3-5SiO2 (cordierite)__________-___...The plane K2O-Al2O3-4SiO2 (leucite)-MgO-SiO2 (enstatite)-2MgO-2A!2O3-5SiO2 (cordierite) through the tetrahedron...Phase-equilibrium diagram for the plane MgO-SiO2 (enstatite)-CaO-Al2O3-2SiO2 (anorthite)-CaO-MgO-2SiO2 (diopside)__________...____________________ 91. The plane MgO-SiO2 (enstatite)-CaO-SiO2 (wollastonite)-Al2O3 through the tetrahedron...sodium form of which has the formula Na2O'llAl2O3 (Ridgeway, Klein, and O'Leary, 1936; Bragg, Gottfried, and |  | | Journal (article/letter/editorial) | | Portland, and when the slope from the Bill to the Ridgeway was uniform and gradual. The anticlinal line,...contains bright green crystals of a ferruginous enstatite (bronzite), and sometimes a hornblendic mineral |  | | Book (edition) | | abbreviations: Rep. (republic), prov. (province), co. (county), munic. (municipio), pref. (prefecture), dept...always included in text, except in the cases of the USA, UK, and the provinces Ontario and Quebec in Canada...Uintah County. Utah. and m (2.B. acanthite group). Monoclinic, C2/m, a,b,c Rio Blanco County. Colorado...Plat., Malawi, G 10 17 River Formation in Uintah County, Utah. Deer et al., v. 2A,483, 1997. Aenigmatite...phonolites, rhyolites, and their lavas in Sonoma County, California, in the Picture Gorge basalt, Wheeler |  | | Journal (issue) | | . . . . . . . . . . . . . 16 The Delta Cut by Henry E. Larson ........................................many tests in use on its own lapidary products, Henry B. Graves Company, 1190 South Old Dixie Highway...~· . ~ August Shows ' August 13-l ~Virginia Beach, VA- Virginia Beach Civic Center August 21-22-South...acrylic fixative. Make Rocks Turn into Gems Virginia Peninsula First Annual Show Send for your FREE...appropriate that the Gem and Mineral Society of the Virginia Peninsula is presenting its first annual show |  | | Report (volume) | | Bettie S. Hackman, Virginia M. Jussen, Elisabeth S. Loud, Mildred C. Mead, Virginia S. Neuschel, and Dorothy...Geology California Div. Mines and Geology County Rept. Geology County Report. San Francisco, Calif. California...Ky. Kentucky .Geol. Survey County Rept. - Kentucky Geological Survey County Report. University of Kentucky...Los Angeles County Mus. Contr. Sci. in Science. Los Angeles, Calif. Los Angeles County Museum Contributions...Contributions Los Angeles County Mus. Nat. History Quart.- Los Angeles County Museum of Natural History Quarterly |
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