 | | Journal (issue) | | GEOLOGICAL SURVEY Number 67 The El Oro metamorphic complex, Ecuador: geology and economic mineral deposits...Bonilla, W, and Duque, P. 1995. The El Oro metamorphic complex, Ecuador: geology and economic mineral deposits...Energia y Minas Quito Ecuador P Duque Escuela Politenica Nacional Casilla 2759 Quito Ecuador Contributors NJ...Cover photograph Stunted cloud forest, southern Ecuador ( C Mort.imer, BGS) iii CONTENTS Abstract 1...General setting 5 Geology of Sub-province I 6 Tahuin semi-pelitic division 6 El Tigre unit 6 La Victoria unit |  | | Report (issue) | | 11 The metamorphic belts of Ecuador The metamorphic belts of Ecuador CQVer photograph Cerro Hermoso... OVERSEAS MEMOIR 11 The metamorphic belts of Ecuador M Litherland,] A Aspden and RAJemielita Keyworth...andjf.MIEl,ITA, RA. )994. The metamorphic belts of Ecuador. Overseas Memofr of the British Geologi-cal Survey...7 Andean metallogenesis 9 Metamorphic rocks of Ecuador l0 Stratigraphical nomenclature 10 Metamorphic...and skarns 33 Alao terrane 36 Alao-Paute unit 36 El Pan unit 38 Maguazo unit 39 Guamote terrane • 41 |  | | Report (issue) | | Chile chemistry Colombia crystallography Cuba Ecuador French Guyana Honduras hydrology Latin America...Central Chile quimica Colombia cristalografia Cuba Ecuador frances Guyana Honduras hidrologia Latinoamerica...(Costa Rica) cabelleria (Cuba) cabelleria (Ecuador) cabelleria (El Salvador) cabelleria (Guatemala) cabelleria...(Nicaragua) cabelleria (Santo Domingo) cantero (Ecuador) carga (Venezuela) caro (Santo Domingo) corral...manzana (Argentina) manzana (Costa Rica) manzana (El Salvador) manzana (Guatemala) manzana (Honduras) |  | | Journal (article/letter/editorial) | | several New Jersey localities, and datolite after quartz is reported from Russia. Pseudomorphs of chalcedony...fissure veins. Associated minerals include calcite, quartz, prehnite, danburite, axinite, garnet, and the...heulandite, pectolite, apophyllite, calcite,, and quartz, and its crystal aggregates often form the matrix...rock at notable localities such as the Cheapside quarry at Deerfield, Franklin County, where it occurred...Massachusetts; fine specimens were also found at the Notch quarry at nearby Amherst. Similarly, datolite occurred |  | | Report (issue) | | Ancient Perú A translation of Minería y Metalurgia en el Antiguo Perú Arqueológicas 12 Publications of the...Petersen G., Georg, 1898–1985. [Minería y metalurgia en el antiguo Perú. English] Mining and metallurgy in ancient... . . . . . . . 17 Quartz, Slate, Flint, Obsidian, Crystalline Quartz, Rose Quartz, Opal, Onyx, Topaz... . . . . . . . . . . . . . . . . . . . . . 33 Ecuador . . . . . . . . . . . . . . . . . . . . . . . ...Ancient Perú Georg Petersen’s Minería y Metalurgia en el Antiguo Perú was originally published in Spanish |  | | Journal (article/letter/editorial) | | Another contributor is David S. Smith, 25 Calle Belleza El Encanto, Tucson, Ariz. He has sent in some small...CONNECTICUT: A locality for aegirite is the abandoned Flatrock granite quarry at Waterford, New London Co., Conn...State's most noted locality, the Brandywine (Hubbard) quarry, in Wilmington, New Castle Co., Del. A note from...old Brandywine quarry which is along Brandywine Creek in Wilmington, Del. This quarry, of course, was...was abandoned years before I reached the locality. This specimen was obtained from the natural science |  | | Journal (issue) | | breccias, and tuffs overlying Cretaceous-aged quartz monzonite basement, and surrounded by Quaternary...silicification, stockwork quartz veinlets with adularia, and widespread sericite. Massive quartz veins, 2- to 5-meters...Unusual Scorodite (Continued from page I) The largest quartz vein within the deposit, the Cactus vein, was located...between the rhyolitic rocks and the underlying quartz monzonite. This vein was the focus of early bonanza...Cactus vein consists of brecciated and rehealed quartz containing less than 5 but up to 15 percent fine-grained |  | | Report (issue) | | 26 15. Geologic map of the Pumpkinvine Creek and Canton Formations . . . . . . . . . . . . . . . . . ..... . . . . . . . . . . . . . 34 20. Map showing Canton Formation type locality .......................................... 66 44. Photograph of kyanite-quartz granofels . . . . . . . . . . . . . . . . . . ...Kingston Cartersvil le AIIatoona Dam South Canton Canton Birmingham Cumming Bu ford Dam Fiowery Branch...quadrangles. Ridge The Blue Ridge geologic province as defined in this report bears little resemblance |  | | Report (volume) | | includes geologic age, geographic location, geologic province, type locality, subunits, and a summary of the...the type locality is listed first. • Geologic province of type area as established by the American Association...Cretaceous (Comanchean) Florida South Florida province Applegate, A.V., Winston, G.O., and Palacas, J...Proterozoic or Cambrian Virginia Piedmont-Blue Ridge province Drake, A.A., Jr., and Lyttle, P.T., 1981, The...Virginia. Consists of beds of deformed pelitic quartz-muscovite-biotite-chlorite-plagioclase schist containing |  | | Book (volume) | | ..............................458 Appendix B - Quartz Family Gemstones ................................includes granites, schists (mica, garnet, graphite, quartz), and gneisses, as well as numerous granite pegmatites...marble; e SIXMILE (hamlet on Sixmile Cr.), area of abandoned mines⎯Barite (crystallized, massive & nodular)...⎯siliceous gemstones; d N 5 mi. on Rte. 5: (a) chert quarry⎯Barite crystals, chalcedony, chert, siliceous oolites;...AREA: c lead mines⎯Galena; d sand & gravel pits⎯Quartz gemstones; e iron mines⎯Hematite, Magnetite, Pyrite |  | | Book (volume) | | ..............................460 Appendix B - Quartz Family Gemstones ................................includes granites, schists (mica, garnet, graphite, quartz), and gneisses, as well as numerous granite pegmatites...marble; e SIXMILE (hamlet on Sixmile Cr.), area of abandoned mines⎯Barite (crystallized, massive & nodular)...⎯siliceous gemstones; d N 5 mi. on Rte. 5: (a) chert quarry⎯Barite crystals, chalcedony, chert, siliceous oolites;...AREA: c lead mines⎯Galena; d sand & gravel pits⎯Quartz gemstones; e iron mines⎯Hematite, Magnetite, Pyrite |  | | Book (edition) | | Tallapoosa, Chambers, and Randolph gold occurs both in quartz veins and in surface gravel. The gravels were partly...thoroughly worked over some forty years ago. The quartz veins have also been worked at many localities...Randolph county ; also found in small "quantity in quartz pebble beds overlying Coal Meas ures near Fayette...county ; T. 21, R. 6 E., Clay county, with pyrite in quartz rock; T. 20, R. 7 E., and also near Ashland. Clay...24, T. 19, R. 7 E., Clay county, with pyrite and quartz in small quantity. MINERAL RESOURCES. C94 ALABAMA |  | | Journal (article/letter/editorial) | | the last issue appeared a short item relative to quartz crystals (milky and rock crystal) found at Hans...which are unusually good ; also, rutilated rose quartz from the property of J. Swanton Ivy, near Watkinsville...lot is opalescent rose quartz from the Kell mica mine in Rabun County. This quartz was first cut into a...géodes in all kinds and color. Clear quartz ones, milky quartz, fluorescent calcites, dogtooth calcite...inches in diameter and is coated inside with smoky quartz crystals. "If you ever get near Greencastle (40 |  | | Journal (article/letter/editorial) | | Unfortunately. with today’s environmental laws and mine and quarry regulations. the prolific collecting of the 1950s...Ordovician Oneota Dolomite, discovered in 1891 and abandoned shortly after 1900, adit, cuts, and shafts: anglesite...pyrite, quartz (drusy), smithsonite (Garvin, Ludvigson, and Ripley 1987). Postville, Postville quarry, 1.5...marcasite and pyrite), hemimorphite, marcasite, pyrite, quartz (drusy), sauconite, smithsonite, sphalerite (Hey1...1982). Appanoose County Centerville gypsum mine; abandoned underground mine, worked 1917-34; Mississippian-age |  | | Journal (article/letter/editorial) | | the chert have large cavities that are lined with quartz crystals. ARIZONA: David P. Record, of the Mission...Creek, Grand Co., Colo., and the other was a smoky quartz from Deertrail, Arapahoe Co., Colo, CONNECTICUT:...diaspore are reported by King to occur at the abandoned Laurel Creek corundum mine in Rabun County, where...the New Point lime- ROCKS AND MINERALS stone quarry at New Point, Ind., (in Decatur Co.) with Roy Grossman...1951, I noted the request for information about quartz and selenite xl occurrences in Des Moines and Polk |  | Higgins, M.W., Atkins, R.L., Crawford, T.J., Crawford, R.F., Brooks, Rebekah, Cook, R.B. (1988) The structure, stratigraphy, tectonostratigraphy, and evolution of the southernmost part of the Appalachian Orogen. Professional Paper 1475. US Geological Survey doi:10.3133/pp1475 | Report (issue) | | Mountain and Salem Church Gneisses (abandoned), Cohutta Schist (abandoned)..................................Dog River Formation (abandoned) .................. Andy Mountain Formation (abandoned) ............. Tallulah...Amphibolite or Formation (abandoned) ... Pumpkinvine Creek Formation (abandoned) ......... Ropes Creek thrust...(revised) .................. Mud Creek Formation (abandoned) ................. Cedar Lake Member (revised)...Rock Gneiss (abandoned)..................................... Univeter Formation (abandoned) .......... |  | | Report (volume) | | conglomerate, flint, gravel,. quartz-mica schist, novaculite, massive quartz, quartzite, sand, "sand-clay...as the Arkansas stone. It has fewer joints and quartz veins than the Arkansas stone but contains more...marketing. These deposits are in Chaffee, Douglas, El Paso, Fremont, Jefferson, Pueblo, and Prowers Counties...in Fremont County also yield ganister. Analysis of El Paso County sand is given. Averill, C. V., and Norman...and quartzite were quarried about 3 miles east of Oro Grande, San Bernardino County. This material has |  | | Journal (issue) | | O#tle,,14 /a-" ' 9 ~ , 191/-3 CHIPS FROM THE QUARRY ......................................................................................... DRUSY QUARTZ NEAR EUREKA SPRINGS, ARK . ......................are quartz and mica. We chiseled out some large hexago:-ial beryl crystals from the Doyle quarry. There...accessible by auto), Mr. T . J. Doyle has a hematite quarry where we secured some exceptionally fine specimens...mineralogist will many minerals. also find at abandoned mines and dumps Estes Parle (adjoining Rocky Moun- |  | | Journal (article/letter/editorial) | | although minor SiO2 (which is probably included quartz) and phosphate, occurring as a minor replacement...sized bright green scales along with tyrolite on quartz and phyllite host rock (Jenkins 1981), and the...been described from the Corocoro mine in Pacajes Province, La Paz Department, Figure 3. The remains of the...and Ferdock 2004). This well-known locality, an abandoned copper-tin mine, is approximately 200 kilometers...from the Chuquicamata mine at Calama, El Loa Province. At the El Teniente mine far to the south, impressive |  | | Report (issue) | | Southern Africa BY BRUCE CAIRNCROSS 108 Morocco's El Hammam: Six Decades of Fluorspar Mining BY PIERRE...iliccfe,plart polfe.Adeofwatnuqmn,caafafuzuadmmft� el{g1c. meaning to flow. myrrhina" (page 2) alllllra...Crystals are frequently found in association with quartz, calcite, galena, sphalerite, and barite to form...Upper right: I -cm wide fluorite dodecahedra with quartz; Sweet Home mine, Alma, Colorado The Collector...JeffScovil photo 9 A 3 cm high purple fluorite on quartz from the recently closed Sweet Home mine in Alma |  | | Journal (issue) | | Fluorapatite, 3.3-cm crystal, from the Pulsifer quarry, Maine. Collected by Terry Szenics; Jeff Scovil...rosette, with prehnite, 14 cm, from the Centreville quarry, Fairfax, Virginia. Smithsonian Institution collection...C6649; Lee Boltin photo. Fairfax Quarry, Virginia, 1967 The Fairfax quarry in Virginia is a classic locality...northeastern corner of the Fairfax quarry in Centreville, Virginia. I visited the quarry the next weekend. Nothing...15 feet to the left, parallel to the wall of the quarry. This tube varied from 6 inches to 2 feet wide |  | | Report (issue) | | Wiener North Carolina Geological Survey graphic province, a major geographic entity that extends for nearly...southern Pennsylvania into Georgia. The width of the province in this vicinity is about 75 miles. The northwestern...a southern section. Hack’s Southern Blue Ridge Province extends from the Roanoke River in Virginia south-westward...He further subdivides the Southern Blue Ridge Province into topographic subunits. Several subdivisions...Highlands, the Asheville Basin, and the Waynesville- Canton Basin. Lower, much more subdued landscapes characterize |  | | Journal (article/letter/editorial) | | approximately 200 kilometers northeast of Reno, is an abandoned copper-tin mine. Here, elongated well-formed crystals...associated with a skarn and adjacent quartz monzonite stock of Tertiary age (El-Shatoury and Whelan 1970). Discrete...strashimirite, goethite, and native gold was found in a quartz vein cavity in the South pit. In the Tintic district...specimens. Other localities include the El Cobre deposit at Concepción del Oro, Zacatecas, where exceptionally...associated with gemmy pharmacosiderite on a goethite quartz matrix. At the Ascotan mine in Potosí, Bolivia |  | | Book (volume) | | .......................175 Illinois – Hamilton Quarry Location Map ..................................................................557 Appendix B - Quartz Family Gemstones ................................includes granites, schists (mica, garnet, graphite, quartz), and gneisses, as well as numerous granite pegmatites...marble; SIXMILE (hamlet on Sixmile Cr.), area of abandoned minesBarite (crystallized, massive & nodular)...siliceous gemstones; N 5 mi. on Rte. 5: (a) chert quarryBarite crystals, chalcedony, chert, siliceous oolites; |  | | Book | | Helen Ellsberg LOS CORONADOS ISLANDS Dona anita of el rosario David Goldbaum Towns of baja California...near the sites of the earlier copper mining south of El Rosario for turquoise, in the pegmatite dikes of...fields around ElArco and El Alamo, but most of these earlier mining areas are abandoned. Often quite interesting...land . . . this Baja. W. R. C. Shedenhelm Motel El Cortez San Felipe, Baja California June, 1979 jQlw...VALLE TRINIDAD £2 rs O SECTION n s s? =3 m — EL ROSAR i r SAN QUINTIN S’ o QJ s • ill aUHlod |
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