 | | Report (issue) | | metal-bearing, epithermal deposits of Mexico and Peru by Nora K. Foley Open File Report 84-633 This report...districts Guanajuato District, Guanajuato, Mexico References Geologic map of Guanojuato District, Mexico Pachuca-Real...del Monte District, Hidalgo, Mexico References Geologic map of Pachuca-Real del Monte District, Mexico...Colqui District, Lima, Peru References Geologic map of Colqui District, Peru Julcani District, Huancavelica...Huancavelica, Peru References Geologic map of Julcani District, Peru 1 2 3 4 4 10 11 12 16 18 19 24 25 26 |  | | Journal (issue) | | 89 by W. E. Wilson The Palomo mine, Huancavelica Department, Peru . . . . . . . . . . . . . . . . . .... .95 by J. Hyršl Pseudomorphs from Peru . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...March–April, 2008 The Palomo Mine Huancavelica Department, Peru Jaroslav Hyr l e urtum 383 CZ-14200...much more famous Julcani and San Genaro mining districts in Huancavelica Department, Peru. A property of...belongs metallogenically to the Huachocolpa ore district (Samame-Boggio, 1985). The last active mining |  | | Journal (article/letter/editorial) | | Geological and Hydrothermal Processes, Northern Peru a b Andrew W. Macfarlane , Rosa-Maria Prol-Ledesma...Geological and Hydrothermal Processes, Northern Peru, International Geology Review, 36:7, 645-677, DOI:...Geological and Hydrothermal Processes, Northern Peru A N D R E W W. MACFARLANE, Department of Geology...Universitaria, Coyoacan, 04510 Mexico, D. F. AND M A R K E. CONRAD MS 70A -3363, Lawrence Berkeley Laboratory...Abstract Mineralization in the Hualgayoc district of northern Peru occurs in altered Miocene felsic intrusions |  | | Journal (article/letter/editorial) | | POTASSIUMAND RUBIDIUM METASOMATISM AT THE ]ULCANI DISTRICT, PERU DARYL A. SCHERKENBACH NorandaExploration...determined and rubidium metasomatism on both a district-wide scaleandat closeproximityto veinsandveinsystems...hydrothermalalterationand mineralization(Scherkenbach,1978). The Julcani Mineralogy and Chemical Changes districtis well...fine-grainedor glassy Most of the altered rocksin the district thedetermination of accurate background values...pyrite, smectite, quartz, sericite,albite, and/or K-feldspar.X-ray difto selectedveinsand vein systems |  | | Journal (article/letter/editorial) | | a near-neutral meteoric water system of the K-feldspar (dadulariaT)-sericite type may produce low-sulfidation...mineralogy of igneous rocks in the Julcani district, Peru The Julcani district (Fig. 3) contains a remarkable...Silberman, 1984; Deen, 1990; Deen et al., 1994). The district is an exceptional area for the study of sulfate...leading to the formation of a major ore deposit. The district is in a late Miocene dome field built on a thick...margins of the various stages of volcanic rocks at Julcani are summarized in a ysulfate–ysulfide diagram (Fig |  | | Journal (article/letter/editorial) | | phasesare depositedprogressively farther from the district center (Stoces,1934; Park, 1955; Barnes, Base...Assemblages deposits, such as Quiruvilca and Julcani, suggest a Pasco,Peru, hasproducedmorethan 66 millionmettemporal...-t- sericite tivity away from the center of the district (Petersen, Einaudi, 1982). and/oradvancedargi...trends: at any given point, propylitic alteration (K feldspar-stableq- quartz q- calcite q- pyrite) is overprinted...argillicalteration(re- gion3).Constraints: 2S= 0.01m2C = 0.1m,K+= 0.05m,Ca+• = 0.1 m (seeBartos,1987a).Oxide,sulfide |  | | Book | | of the] FM-TGMS-MSA Wulfenite Symposium (chairman: K. Wenrich) 21:98100 Abstracts of the FM-TGMS-MSA Symposium...(chairman: K. Wenrich) 22:65-69 [Abstracts of the] FM-TGMS-MSA Symposium on Garnet (chairman: K. J. Wenrich)...Micromounting in the eastern Alps of Austria (by K. Kotal) 13:171-173 ALSTONITE An occurrence of alstonite...the Andover iron mine, Andover. New Jersey (by D. K. Cook) 3:63-64 ANDRADITE Andradite from the Junnila...tennantite on octahedral pyrite from Quiruvilca. Peru 4: 159-163 --with R. W. Thomssen: Lithiophilite |  | Fornadel, Andrew P., Voudouris, Panagiotis Ch., Spry, Paul G., Melfos, Vasilios (2012) Mineralogical, stable isotope, and fluid inclusion studies of spatially related porphyry Cu and epithermal Au-Te mineralization, Fakos Peninsula, Limnos Island, Greece. Mineralogy and Petrology, 105 (1) 85-111 doi:10.1007/s00710-012-0196-8 | Journal (article/letter/editorial) | | porphyry mineralization by >1 Ma (e.g., Colquijirca district, Bendezu et al. 2003). Post-orogenic extension...Alpine-Balkan-CarpathianDinaride metallogenetic and geodynamic province (Heinrich and Neubauer 2002; Marchev et al. 2005)... ab Lesbos L Le Les Lesb es esbo oss ++ + loc k + + + + + + ++ ++ + + + + + + + + 40° N I-A suture...lower-most Katalakon unit consists of NW trending K-rich andesitic to dacitic lavas. In places, it is...Katalakon unit yielded whole rock and groundmass K-Ar ages ranging from 21.3±0.7 to 20.2±0.2 Ma (Innocenti |  | Páez, G.N., Ruiz, R., Guido, D.M., Jovic, S.M., Schalamuk, I.B. (2010) The effects of K-metasomatism in the Bahía Laura Volcanic Complex, Deseado Massif, Argentina: Petrologic and metallogenic consequences. Chemical Geology, 273 (3) 300-313 doi:10.1016/j.chemgeo.2010.03.007 | Journal (article/letter/editorial) | | o m / l o c a t e / c h e m g e o The effects of K-metasomatism in the Bahía Laura Volcanic Complex,...lithologies and geochemical signatures observed in K-metasomatized areas around the world, regardless of...the high mobility of elements that occurs during K-metasomatism, no classification or discrimination diagram...precious and base metals enrichment/depletion pattern of K-metasomatized rocks is identical to the geochemical...signature, along with spatial relations observed between K-metasomatized rocks and epithermal manifestations |  | | Book | | MALAWI Mount Malosa, Chilwa alkaline province, Zomba district. "Illite" is the name of a series of incompletely...massive calcite. or, rarely, still attached to the feldspar/mica walls of the dike (www.davidkjoyceminerals...Administered Tribal Areas and North West Frontier Province. Ilmenite crystal clusters to 12 cm across have...of rutile (Weerth, 2004). Tonniq Valley, Skardu district, Gilgit-Baltistan [Northern Areas]. Beginning...hematite. Zagi [Zegi] Mountain, Warsak district, North West Frontier Province. Surface diggings worked by local |  | Özdamar, Şenel, F.Roden, Michael, Esenli, Fahri, Uz, Bektaş, Wampler, J. Marion (2012) Geochemical features and K-Ar age data from metadetrital rocks and high-K metasomatized metarhyolites in the Afyon- Bolkardağ Zone (Ilgin-Konya), SW Turkey. Neues Jahrbuch für Mineralogie - Abhandlungen Journal of Mineralogy and Geochemistry, 189 (2) 155-176 doi:10.1127/0077-7757/2012/0216 | Journal (article/letter/editorial) | | Geochemical features and K-Ar age data from metadetrital rocks and high-K metasomatized metarhyolites...Metarhyolites are extensively K-feldspathised. K-metasomatism has produced K-feldspar porphyroblasts, sericitization...and has modified the K/Na, K/Rb and Rb/Sr ratios. The metarhyolites are extremely K-rich (6 –11 wt.% K2O)...abundances. The results indicate an origin of the high-K rhyolites in an extensional tectonic regime during...sample from the Paleozoic sequence yielded a phengite K-Ar age value of 96.9 ± 1.4 Ma, whilst three samples |  | | Book | | ............... . 83 The Fresnillo Ag-Pb-Zn District, Zacatecas, Mexico ................................. . 2.2.2 The Casapalca Ag-Pb-Zn-Cu Deposit, Peru . 84 88 2.3 Epithermal Vein Deposits ................... . 91 2.3.1 The lulcani Deposit, Peru ............... . 2.3.2 Discussion and Suggestions for...Massive Sulfide Deposits of the BathurstNewcastle District, New Brunswick, Canada Discussion of Tectonic...conditions are typified by the Andean arc system of Peru and Chile, although in detail the dominant compression |  | | Report (issue) | | PROCESSESRELATEDTO MAGMACHAMBERCRYSTALLIZATION H. Sbinohara, K. Kazabaya ..........................................for magmas undergoing bulk assimilation-- 5 J K. lttmdl" al limion are plotted in Figure 3b. These...BJO(mural abbrev.after Kretz 1983) Qlz Cp 01 En Act K& Ms Chi Ep XH20 Ab RockType An Pdbook 0213 OJS4 0...solubilitiesfor melts of compositionsimilar to that of IronMa k rocks arc pressure-dependent and are providedby Burnham&...Cl1ISIII c:oatamination. related substancesat 298.15 K and I bar ( I0 c.,Jt. """"11. Pdrolor,41,275-286. |  | | Report (volume) | | east-west, northwest, and northeast within the district. Hawkins (1982) postulated that the east-west...upper- and lower-plate rocks in the Jerritt Canyon district is thought to be a high-angle fault. Exposure...cover in the district. REGIONAL STRATIGRAPHY Most of the rocks in the Jerritt Canyon district are Paleozoic...geologic map of the Enfield Bell mine, Jerritt Canyon district, Elko County, Nevada. � Geology of the Enfield...Enfield Bell Mine and the Jerritt Canyon District, Elko County, Nevada 97 Lower-plate rocks Lower-plate stratigraphy |  | | Journal (issue) | | Microminerals Miscellany from France, the Eifel district, and Mont Saint-Hilaire ........................(first color special issue) $20 v .5 /# 5 Julcani District in Peru, Indian M tn. (A L), C apelinha (Brazil)...RO. Box 35565 Tucson, Arizona 85740 m v .9 /# 3 K alahari rhodochrosite, Paterson (N J), Brum ado dis...complex and fractionated in the east. Pink potassium feldspar, gray to milky quartz, biotite, hematite, magnetite...quartz and feldspar. Small “eyes” in the beryl crystals turn blue when heated. Biotite K (M g,Fe2+)3(Al |  | | Report (volume) | | 441-443: Occurrences of kornerupine sensu stricto (K) and prismatine (P) Chapter 9. Table 17, pp. 461-462:...formation The system Ca-Mg-B-Si-O-H-Cl-S The system K-Na-B-Si-O-H-F-N Other chemical systems Heat-capacity...exploration guide Geochronology Involving Tourmaline K-Ar and ^Ar/S^Ar systematics Rb-Sr geochronology Sm-Nd...High-spatial-resolution EELS Interpretation of the B K ELNES Molecular Orbital (MO) approach Multiple scattering...salar deposits in the Andes of Argentina, Chile and Peru; and (4) marine evaporites, the largest of which | | | Report (volume) | | Table 17, pp. 461-462: B,03 contents sensu stricto (K) and prismatine of rock-forming (P) silicate minerals...mmriaeiosle BSE LCLON CES ss 1 pa ote teee sae cen k ts So TRe La ar Net On RI cs Seid Chapter 6 193...Meee tent cee ees Premetamorparc replacement 04.200. k rons nace ert as none e eo cee 590 590 591 593 593...salar deposits in the Andes of Argentina, Chile and Peru; and (4) marine evaporites, the largest of which...Russian Far East, and Mg-Fe borates in the Liaoning Province, China. In compiling the Table, whenever possible |  | | Book (edition) | | Dan Behnke Demetrios Pohl Richard Graeme D. K. Jones Douglas K. Miller Arizona-Sonora Desert Museum =Donald...X-ray Crystallography, edited by N. F. M. Henry and K. Lonsdale, Kynoch Press (Birmingham, England), three...Patterns for Silicate Minerals,’’ by I. Y. Borg and D. K. Smith, Geological Society of America, Memoir 122...Elements and Genetic Types of Their Deposits, edited by K. A. Vlasov (Academy of Sciences of the USSR, in translation...Colorado at the Pelican Dives mine, Silver Plume district, and at the Little Emma mine, Clear Creek County; |  | | Book | | , 0.'i i i Ii • 1 i i "I ""U .. i'" • K 41> 4'VIItA.OC ACCJ;"OJl;T I ~ ~ I ZIRCON...:IS BIOOTI'E ';;j ~ ! MUSCOVITE filii .2 FELDSPAR 3 41> "" QUARTZ , 0 .1 0.' , " ,! , ...solid line; granitoid localities, A-Altai-Sayan, K- Kazakhstan, Ka-Kamchatkha, W-Western US. Data are...ferromagnesian (biotite, hornblende), to felsic (quartz, feldspar) minerals in a given geological host (see granitoid...close to or below the whole rock, are quartz and feldspar. In silicic and intermediate rocks, the carrier |  | Gaines, Richard V., Skinner, H. Catherine W., Foord, Eugene E., Mason, Brian, Rosenzweig, Abraham, King, Vandall T. (1997) Dana's New Mineralogy (8th ed.) Wiley-Interscience. p.1872 | Book (edition) | | abbreviations for the Latin names of the elements (K, Na, Fe, etc.) By the third edition of the System...Biologists, VCH, New York. (GT) Glusker, J. P., & K. N. Trueblood (1985); Crystal Structure Analysis:...is a function of the first two such that i= -—(h+k).) Zone symbols, enclosed in square brackets, [uvw]...of a form in integers is The form {hkl} where h, k and] are positive or negative, unequal y elesymmetr...possible ments present; it has the maximum no are | and k, h, which for face A it. for given point group and |  | | Report (volume) | | 2Fe1−xS·k(Mg,Fe,Al)(OH)2 where 0.08 < x < 0.28 and 1.58 < k < 1.75, based on crystallographic evidence. Hydroxide...alternate regularly (Fig. 6b). Only Tl and minor K have been found in association with the sulfide-antimonide...(Fig. 13b), are secured by quenching from about 950 K. The trigonal prismatic 2H form is stable at room...layer components, expressed as the match coefficient k in the reduced chemical formula MS·kM2S3 (0.587 for...would be Pb12Bi14S33, i.e., k = 0.583; for 17Q/10H, i.e., Pb17Bi20S47, k = 0.588. For the very simple |
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