 | | Journal (article/letter/editorial) | | evidence from a jadeitite-serpentinite contact, Guatemala 1938-2839 Geology Review, 0020-6814 TIGR International...contacts are generally not exposed. In the Sierra de las Minas, Guatemala, we have studied a 3 m-wide pit transecting...Burma, Russia, Kazakhstan, Japan, California, Guatemala, and the Cyclades (Bröcker and Enders, 2001; Compagnoni...in 1998, when Hurricane Mitch roared through Guatemala at a heavy cost to life and property. Mitch’s...in the rugged mountains of central Guatemala, around the Motagua Fault Zone (Bucknam et al. 2001). This |  | | Journal (article/letter/editorial) | | albitites and related rocks from the Motagua Fault Zone, Guatemala G . E . HARLOW Department of Mineral...NY 10024-5192, USA ABSTRACT Jadeitites from Guatemala are found as weathered blocks in tectonized serpentinite...serpentinite in a 15-km zone north of the Motagua Fault Zone. Rock types found with jadeitite include...+ Key words: albitite; Guatemala; jadeite; jadeitite; metasomatism; Motagua Fault Zone; Abbreviations:...(Dobretsov & Ponomareva, 1965); and along the Motagua Fault in Guatemala (Foshag & Leslie, 1955; McBirney et al |  | | Journal (article/letter/editorial) | | varieties and petrotectonic evolution of the northern Guatemala Suture Complex Uwe Martens, Tatsuki Tsujimori...varieties and petrotectonic evolution of the northern Guatemala Suture Complex, International Geology Review,...varieties and petrotectonic evolution of the northern Guatemala Suture Complex Uwe Martensa,b, Tatsuki Tsujimori...eclogite localities within the Guatemala Suture Complex (GSC) north of the Motagua Fault are presented. The...that is associated with serpentinite of the North Motagua Unit. The Tanilar River locality exposes numerous |  | | Report (issue) | | ————•-——• ———• ———————————————————————————————— 1 Guatemala and Honduras ———————— -———————————— — ————————————...——————————— 49 Cordillera Occident al-Serrania de Baudo ———————————————————— 50 Geophysical surveys...Geologic and simple Bouguer anomaly map of parts of Guatemala and Honduras -——————•—————-———————————————————————————————...——————————————— 9 6 Generalized crustal model across Guatemala ————————————————————— 11 .7 Simple Bouguer...Trough — ——— — 41 25 Crustal sections from Isla de Aves to Calabozo ——————————— 42 26 Crustal models |  | | Journal (article/letter/editorial) | | of graywacke, as in Sulawesi (formerly Celebes) (de Roever 1955), does not explain jadeite rock—jadeitite...used by the Aztecs in what is now Mexico: piedra de yjada (stone 4.2 Harlow · Tsujimori · Sorensen...Titanite CaTiSiO5 Also known as sphene Tr Tremolite Ca2 (Mg,Fe)5 Si8 O22 (OH)2 — Zrn Zircon ZrSiO4...intergrowth of felted amphibole grains, primarily of tremolite [Ca2 (Mg,Fe)5 Si8 O22 (OH)2 ] composition Porphyroblasts:...nephriticus or nephrite [the massive form of tremolite, Ca2 (Mg,Fe)5 Si8 O22 (OH)2 ; Damour 1846]. Both |  | | Journal (issue) | | minerals: tremolite and ferroactinolite. Each is similar in chemical composition; tremolite is a hydrous...source. It is found in Myanmar (Burma), Japan, Guatemala, California, Kazakhstan and Russia. For this reason...magnesium-rich amphibole. It is a fibrous aggregate of tremolite-actinolite, which is a calcium magnesium iron...Nations people who still controlled the Bridge River Valley where he lived. Vanderwolf actually helped build...him at the annual jade festival in nearby Pacific Valley. For a close-up look at Big Sur jade, visit his |  | Skirrow, R.G, Camacho, A, Lyons, P, Pieters, P.E, Sims, J.P, Stuart-Smith, P.G, Miró, R (2000) Metallogeny of the southern Sierras Pampeanas, Argentina: geological, 40Ar–39Ar dating and stable isotope evidence for Devonian Au, Ag–Pb–Zn and W ore formation. Ore Geology Reviews, 17 (1) 39-81 doi:10.1016/s0169-1368(00)00004-4 | Journal (article/letter/editorial) | | mesothermal lode Au Ž"Cu " Ag. in the Sierra de Las Minas and Sierras de Cordoba yields ´ Devonian 40Ar– 39Ar...W-bearing quartz vein mineralization in the Aguas de Ramon ´ and El Morro districts which yielded muscovite...hosted by mafic–ultramafic intrusions in the Sierra de San Luis ŽSkirrow and Sims, 2000., both of which...to Ni–Cu sulfide mineralization at Las Aguilas in the Sierras de San Luis ŽFig. 1., occurred at ca. 480...Devonian shear zones Že.g. in the Sierra de San Luis and Sierras de Comechingones. were the loci of granite |  | | Journal (article/letter/editorial) | | amounts of acmite, chloromelanite — the stone piedra de yjada (stone for the (NaAlFe)Si 12 0 6 — is formed...when in amounts as present in acical formula for tremolite, actinolite and tinolite, black. Ferrous hydroxide...4 - OH) gives it colors of yellow and On) 2 - Tremolite has very little if any brown. If any ferric iron...Robert Leslie in 1952 in Guatemala, close to the serpentine area of Sierra de las Minas. Foshag of the Smithsonian...were albite, nepheline, pectolite, actinolite, tremolite, chlorite, natrolite, 2oisite, sphene, garnet |  | | Journal (article/letter/editorial) | | associated metapelite from the Chuacús complex (Guatemala Suture Zone): constraints from phase equilibria...Luigi A. Solari3 1 Instituto de Geología, Universidad Nacional Autónoma de México, Ciudad Universitaria...Departamento de Geología, Centro de Investigación Científica y de Educación Superior de Ensenada, Carretera...Ensenada B.C., Mexico 3 Centro de Geociencias, Universidad Nacional Autónoma de México, Campus Juriquilla...abundant metapelitic rocks in the Chuacús complex (Guatemala Suture Zone) also preserve evidence for high-pressure |  | | Journal (issue) | | stones have been cut from the clear pink-coloured tremolite called hexagonite. Hexagonite appears to be a...Gundinmarca, Colombia, is a new emerald mine, Las Vegas de San J u a n , or as locally known, the Gachala...the Montagua valley of Guatemala, close to the serpentine area of the Sierra de las Minas. There is considerable...abundant albite. There are other serpentine areas in Guatemala and Mexico which may contain jadeite deposits |  | | Book (volume) | | Company of El Paso, Texas. Information on the Virgin Valley opal deposits was given by G. Keith Hodson of Scottsdale...account of the agates found in the Mississippi Valley was provided by Irving W. Hurlbut of Muscatine...Scheelite, Diopside, Anthophyllite, Actinolite, Tremolite, Seapolite, Danburite, Chondrodite, Benitoite...Drawing of Ramona Topaz crystal . View of Virgin Valley . An opal digging XI List of Illustrations ...were picked up at the Horshaw Mine in Racoochee Valley, White County. In April 1887, a 4.5 carat stone |  | | Report (issue) | | en el prospecto "El Alacran", Sonora - hasta Marzo de 1970 [Report on geological, geochemical and geophysical...geologicas-mineras sobre cobre en los prospectos de "Los Alisos", "La Caridad" y "El Alacran"- Reconocimiento...geofisico regional en el districto de Nacozari, en el estado de Sonora: Consejo de Recursos Naturales no Renovables...area]: Hermosillo, Mexico, Consejo de Recursos Minerales Gerencia de Estudios Especiales, 64p. Arriaga...Gomez Caballero, A., 1986, Resultados de la evaluacion del deposito de boratos del area Tubutama, Sonora |  | | Book (edition) | | production of the second edition. Thanks, too, to De Beers Consolidated Mines Ltd, for the information...new plates have been provided by the courtesy of De Beers xxi Preface to the Second Edition Consolidated...rocks. Figure 1.3 Basaltic lava flow of 1944 in a valley leading down to Naples, Italy. The Monte Somma...least 8 m (26 ft) thick at Urubu, near Araçuai, Minas Gerais, Brazil. Fine pink and green gem-quality...14 Alluvial sands containing diamonds near Sopa, Minas Gerais, Brazil The above discussion has concentrated |  | | Report (issue) | | Roermund, H.L.M., Drury, M.J., Barnhoorn, A., and de Ronde, A.A., 2000, Super-silicic garnet microstructures...L., Allen, C.M., Davis, D.W., Aleinikoff, J.N., Valley, J.W., Mundil, R., Campbell, I.H., Korsch, R.J...773. Puga, E., Fanning, C.M., Nieto, J.M., and Díaz de Federico, A., 2005, Recrystallization textures in...is based on complex exchange equilibria (i.e., tremolite-edenite and pargasite/hastingsite-edenite) between...donnees structurales et radiometriques dans le massif de Dabie-Shan (chaine des Qinling): Compte Rendu Academie |  | | Report (volume) | | Supplementary southwest synonym TVA__.___ Tennessee Valley Authority tab._________ table Tech_____- Technical...^ » ^ ~v T »K " * Academia de ciencias me'dicas, fisicas y naturales de la Habana (Cuba) Anales vols...American Year Books 1933-1938. New York. Annales de pale'ontdlogie tomes 17-23. Paris. Annales des mines...petr61eo vols. 34, 35. Mexico City. Boletfn de petr61eo y minas vols. 1-8. Mexico City. Boletin minero vols...Sharon, Mass. Copenhague University, Museum de mine'ralogie et de geologic, Communications pale"ontologiques |  | | Book (volume) | | BT Rivers Germany — Saale River Valley (Germany) UF Saale Valley (Germany) BT —Germany Watersheds...Watershed (Germany) BT Saale Valley (Germany) USE Saale River Valley (Germany) USE (Germany) (Germany)...— Rivers— Germany Saar River Valley (France and Germany) UF Saar Valley (France and Germany) BT Valleys...USE Sar Site (Bahrain) Saar Valley (France and Germany) USE Saar River Valley (France and Germany) SaarbrUcker...— — Rivers — Switzerland Saaser Vispa River Valley (Switzerland) UF BT Katanska buna, Sabac, Serbia |  | | Journal (article/letter/editorial) | | diffusion in the host lattice I. SAADOUNE AND N.H. DE LEEUW Department of Chemistry, University College...phlogopite, diopside, andradite, actinolite, tremolite, epidote, quartz, magnetite, hematite and less... Magnetite, hematite, andradite, actinolite, tremolite, epidote, quartz and less parroting and pyrite...Géochimie et Biogéochimie Experimentale, LMTG, Université de Toulouse, CNRS, IRD,OMP. 14 ave. Edouard Belin, F-31400...apatite and 4 orders higher than F diffusion on tremolite. The constant F contents of apatites at the Areias |  | | Journal (volume) | | the Plant Seep eee dbs bo evesuswspeces 322 Guatemala Forests. Mountain i han (Iilustrated.) “CA Wut...Central pe 823— The Ethnography of PAoa 1008—The Amur Valley...... . -1009 America: Submarine Valleys off the...lo ve de e Th d. ne io nt me s ion ect dir in the two s, ce an st um rc ci se the r de d un de ee oc...gossiping. In It. it has changed to gergone and giargone (de Boot, 1636); Sp., jerga, jerigonza; Fr., jargon ;...Age. * Vol. IV. Oct. 1887. oo, Ere erbiothique RE de la Russie. 1886. From the os U. P.\ James, J. |  | | Journal (volume) | | {m.d.) Copper Extraction Process, Middleton's C. De Kalb {m.d.) Copper in Grenada J- Irvmg {m.d.) Copper...132, *179 '. , , . . . Spain, Copper in C. De Kalb im.d.) 255 Speak, S. .1., Biographical Notice...Petroleum Output . Sampling Ore-Bodies San .Antonio de Fsquilache Santa Ciertrudis Sapphires in Queensland...occurrence of these rocks is seen in the — Gomua River valley, The Gomua river south-west of Chaibassa. a small...series near the village of Rajanka in the Gomua valley is probably advisable, in view of the fact that |
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