 | | Report (issue) | | 24 Gunga deposits ................. 24 Las Bela District .................. 30 Bankhri deposits...Pakistan principally in the Hazara, Khuzdar, and Las Bela districts. Although several vein deposits contain...small deposits in the districts of Hazara and Las Bela. Production increased to 1,250 tons in 1961 and...The vein deposits are found in the Hazara and Las Bela districts. Most of the veins follow shear-zone faults...distances. Replacement deposits in the Khuzdar and Las Bela districts follow sedimentary structures and exhibit |  | | Journal (issue) | | specimen from the Spanish Dry Diggings, Eldorado County, California, and a little of its history ........very rare loose crystal. Ossining, Westchester County, New York. wckport, New York. Ex. Coll. : New...silver, acanthite, pyrargyrite, stephanite, barite, calcite, aragonite, diaspore, galena, sphalerite, inesite...area, as well as the mining settlements of Banska Bela (Dilln), Vyhne (Eisenbach), Kopanice (Kopanitz)...silver with acanthite, marcasite-pyrite, quartz and calcite, 13.4 cm, from Schemnitz. Handcolored engraving |  | | Journal (article/letter/editorial) | | some geologically important carbonate minerals (calcite – CaCO3, aragonite – CaCO3, siderite – FeCO3, magnesite...shown that the series of the studied isomorphous calcite type minerals is an ideal test case for the evaluating...spectra. It enables to distinguish the isomorphous calcite type carbonates from one another. In the course...with calcite (or other calcite type minerals) is around 1 wt %. The spectra of natural calcite and siderite...patterns in the case of the carbonate minerals calcite and aragonite (Jovanovski et al. 1999 a, 1999 b |  | | Journal (article/letter/editorial) | | Back-Arc Basinal, and Oceanic-Island Components of the Bela Ophiolite-Mélange Complex, Pakistan a Zulftqar...Back-Arc Basinal, and Oceanic-Island Components of the Bela Ophiolite-Mélange Complex, Pakistan, International...Back-Arc Basinal, and Oceanic-Island Components of the Bela Ophiolite-Melange Complex, Pakistan ZULFTQAR AHMED...University] at 05:18 24 November 2014 Abstract The Bela ophiolite-mélange complex (BOMC) of Pakistan is...is stranded against a reentrant adjacent to Bela (the Bela reentrant). There is no ophiolite along this |  | | Journal (article/letter/editorial) | | Las Bela Valley, West Pakistan Abstract: The large sand complex on the east side of the Las Bela Valley...subject of this paper, is on the east side of the Las Bela Valley, about 50 miles west of Karachi, Pakistan...discussed briefly in a reconnaissance report on the Las Bela coastal plain (Snead, 1966) and its possible Pleistocene...these sands. Since more complete sampling in the Las Bela Valley is not possible at present, only tentative...stabilized sand area on the east side of the Las Bela Valley is one of the largest of its type on the |  | | Journal (issue) | | solid fillings identified as magnesium-bearing calcite and dolomite by a combination of electron microprobe...gem-quality ruby sectors are almost colourless, and the calcite and dolomite inclusions are iron-free, it was concluded...showed the distribution of calcium and magnesium in calcite and dolomite as fillings of single orientated tubelike...to the the previously identified identified calcite calcite and and dolomite dolomite fillings), fillings)...calcium concentrations due to (see inclusions of calcite and dolomite (see Schmetzer et al., 1996a) were |  | | Report (volume) | | barite and associated minerals (commonly quartz, calcite, fluorite, and sulfides of base metals) occur along...Yugoslavia is exploited in Bosnia, Serbia, and Croatia (Nienaber, 1962). The largest deposits in Bosnia...Montenegro ( Chermette, 1962, p. 35). Deposits in Croatia are at Topusko, near Petrova Gora, and in the vicinity... Veins in these zones contain barite, quartz, calcite, fluorspar, and various sulfides of lead, zinc...deposits occur in the Ballynoe-Silvermines area, County Tipperary, where high-grade barite occurs adjacent |  | | Journal (article/letter/editorial) | | hot, and modified meteoric water (end-member 1). Calcite veinlets in a meta-argillite of the Cambro-Ordovician...therefrom is reminiscent of that revealed in the Bela Stena magnesite pit in Serbia. These lacustrine...(Braithwaite and Zedef, 1994, 1996b), the travertine (calcite) deposits at Pamukkale, north of Denizli, are developed...hydromagnesite, and dolomite, and at 25°C for calcite. Eighteen hours were allowed for the reaction.... 9.12, and 10.20 for magnesite, dolomite, and calcite, respectively (Rosenbaum and Sheppard, 1986). The |  | | Report (issue) | | (Hose and Repenning, 1959). 7. Phelan Ranch, Elko County, Nevada (Smith, 1932). 8. Crittenden Spring, Nevada...1962). 9. Bear Lake County, Idaho (White, 1880; Smith, 1932). 10. Caribou County, Idaho (White, 1880;...neomorphic mosaic of medium-crystalline equant calcite, and some of the carbonate has been replaced by...of A showing two or more generations of fibrous calcite cement. A thin band of first-generation cement...by intergranular acicular carbonate cement. The calcite cement has been partially replaced by length-fast |  | Morteani, G., Moeller, P., Schley, F. (1982) The rare earth element contents and the origin of the sparry magnesite mineralizations of Tux-Lanersbach, Entachen Alm, Spiessnaegel, and Hochfilzen, Austria, and the lacustrine magnesite deposits of Aiani-Kozani, Greece, and Bela Stena, Yugoslavia. Economic Geology, 77 (3) 617-631 doi:10.2113/gsecongeo.77.3.617 | Journal (article/letter/editorial) | | LacustrineMagnesiteDepositsof Aiani-Kozani, Greece,and Bela Stena,Yugoslavia G. MORTEANI, Technische Universit...generatedby dehydrationreactionsand equilibratedwith calcite and dolomite, penetrateddolomite-bearing sheetsat...the magnesites and huntitesfrom lacustrinebasinsof Bela Stenaand of Aiani-Kozaniare lowerthanthoseof the...lacustrinemagna- L'o C'e sites and huntite from Bela Stena and of Aiani-Kozani S• E•uT'b ¾•Lu Ionic...extremenormalizedrareearthelementcontents are mag- samplesfrom Bela Stena(BS2,BSS,BS4).BS2 is slightlycontamnasitescontaminatedby |  | | Journal (article/letter/editorial) | | Oceaniccrust and sedimentsare imentary depositsof Bela Stena,Rvati, and Beli Ka- representedby gabbrosand...lenses. The mostimportantdepositsof this type are Bela Stena andthe dolomiticCherenjedepositabouti km to...beds of colemanite and haulite • i km north of Bela Stena. The detritaltype(3) occursin theformofbedsand...CO2releasedduring n -- 22; significantabove99.9%). Apart from Bela the acid carbonate reaction does not have the same...29 recommended byRosenbaum and Sheppard(1986). Calcite and dolomitewere reactedat 25øC for 12 hoursand |  | | Report (issue) | | monzonite exposed near top of cliff (oral communication, Bela Csejtey, Jr. May 24, 1972; as cited by Cobb, 1972;...Chalcopyrite, galena, sphalerite Gangue minerals: Calcite, pyrite Geologic description: Fine-grained gabbro...cut bench here, is cut by a 1- to 2-inch wide calcite vein that contains galena, sphalerite, chalcopyrite...7 Ma, Patton and Csejtey, 1980). However, the calcite-sulfide vein could be Cretaceous or Tertiary, the...Csejtey, 1980). Deposit model: Sulfide-bearing calcite vein in gabbro. Deposit model number (After Cox |  | Vial, D.S., Abreu, G.C., Schubert, G., Ribeiro-Rodrigues, L.C. (2007) Smaller gold deposits in the Archean Rio das Velhas greenstone belt, Quadrilátero Ferrífero, Brazil. Ore Geology Reviews, 32 (3) 651-673 doi:10.1016/j.oregeorev.2005.01.004 | Journal (article/letter/editorial) | | deposits, including Faria, Esperança III, Bicalho, Bela Fama, Juca Vieira, Brumal, Boa Vista, Fernandes...within: (1), Lapa seca (e.g., Morro Velho, Bicalho, Bela Fama), (2), Banded iron formations (e.g., Cuiabá...there is a predominance of quartz veins, as in the Bela Fama and Bicalho gold mines. In the world-class...30 25 20 Type A2 — gold deposits in lapa seca Bela Pyrite (90%), sphalerite, galena, Fama chalcopyrite...3 g/t Au. Type A2 — gold deposits in lapa seca Bela Fama Production of 3.0t Au and by-product Ag. Bicalho |  | | Journal (article/letter/editorial) | | tremolite, brucite, talk, chlorite, magnesite, calcite and various accessory sulphides and sulfarsenides...silicates (i.e. chlorite, serpentine, tremolite, calcite, graphite, talk), sulphides (i.e. pentlandite,...forming a network structure. Cauliflower magnesite (Bela Stena-type). Redish magnesite colored due to impurities...and occurring within ultramafic rocks, and b) the Bela Stena-type, that is related to younger sediments...values (i.e. -2 to +4.4) are characteristic for the Bela Stena-type, whereas negative ∂13CVPDB values (i |  | | Journal (article/letter/editorial) | | tremolite, brucite, talk, chlorite, magnesite, calcite and various accessory sulphides and sulfarsenides...silicates (i.e. chlorite, serpentine, tremolite, calcite, graphite, talk), sulphides (i.e. pentlandite,...forming a network structure. Cauliflower magnesite (Bela Stena-type). Redish magnesite colored due to impurities...and occurring within ultramafic rocks, and b) the Bela Stena-type, that is related to younger sediments...values (i.e. -2 to +4.4) are characteristic for the Bela Stena-type, whereas negative ∂13CVPDB values (i |  | | Report (issue) | | olistostromes in the basal Great Valley sequence, Napa County, northern California Coast eI C SE te eee CY eer...Sierra foothill melanges and adjacent areas, Amador County, California: United States Geological Survey Professional...olistostromes in the basal Great Valley Sequence, Napa County, northern California Coast Ranges, in Raymond,...olistostromes in the basal Great Valley Sequence, Napa County, northern California Coast Ranges, in Raymond,...induced. Other common D, structural features are calcite-filled veins, swirls and folds of detrital or diagenetic |  | | Report (issue) | | Lawrence Island, Alaska By WILLIAM W. PATTON, JR., and BELA CSEJTEY, JR. SHORTER CONTRIBUTIONS TO GENERAL...LAWRENCE ISLAND, ALASKA By WILLIAM W. PATTON, JR., and BELA CSEJTEY, JR. ABSTRACT Reconnaissance geologic mapping...of chlorite, epidote, sericite, clay minerals, calcite, and pyrite. O6 SHORTER CONTRIBUTIONS TO GENERAL...varying degree to sericite, clay minerals, and calcite, and the mafic minerals are altered to chlorites...Galena, sphalerite, chalcopyrite, and pyrite in calcite veinlet in gabbro. N Galena and pyrite in volcanic |  | | Report (issue) | | no minable ore reserves. More than 25 fluorspar-calcite veins containing as much as 81 percent fluorspar...S-6) (lat zso 29'N., long 66°03'E., fig. 1), Las Bela District, Karachi Division, at the southern end...S-19) (lat 25°27 1 N., long 64009 1 E., fig. 1) Las Bela District, Karachi Division, is near Golkur t. Sulfur...from Kolpur rail station. More than 25 fluorspar-calcite veins in Jurassic limestone crop out within an...that are visible on aerial photographs. Fluorspar-calcite veins, more than 3 feet wide, form lens-shaped |  | Jalil, Raham, Alard, Olivier, Schaefer, Bruce, Ali, Liaqat, Sajid, Muhammad, Khedr, Mohamed Zaki, Shah, Mohammad Tahir, Anjum, Muhammad Naveed (2023) Geochemistry of Waziristan Ophiolite Complex, Pakistan: Implications for Petrogenesis and Tectonic Setting. Minerals, 13 (3) 311 doi:10.3390/min13030311 | Journal (article/letter/editorial) | | (ii) the western ophiolitic belt, which consists of Bela, Muslim Bagh, Waziristan, and Zhob ophiolites (in...eastern Afghanistan. The first three sequences, i.e., Bela, Muslim Bagh, and Waziristan ophiolites, constitute...[21] and are briefly discussed below. The Bela Ophiolite/Bela Ophiolite zone is located at the western...section is observed in the northern part of the Bela Ophiolite, which is predominated by ultramafic rocks...peridotites. The tectonic environment for the formation of Bela ophiolite is interpreted as a fast-spreading mid-ocean |  | | Report (issue) | | Kirtaka (fig. 2): Copper carbonate and sulphide in calcite veins (up to 6 in. thick) cutting massive Cretaceous...Saindak (fig. 2): Galena (about 3%) in 10-inch wide calcite vein cutting basalt dike in Paleocene agglomerate...Galena, sphalerite, and pyrite in a quartz and calcite breccia in a fault zone in trachyte dike cutting...Galena associated with siderite, limonite, and calcite as replacements in siliceous beds in Jurassic limestone...35 J 26°14'N; 66°18'E LAS BELA DISTRICT KARACHI DIVISION Pb-26 Bela (fig. 3): As much as 5 percent |  | | Report (chapter) | | kbar and temperature of 500 + 50 8C for the Seyna Bela garnet glaucophanite and glaucophane-bearing eclogite...thrust belt. Location shown in Figure 1. SB, Seyna Bela; TH, Tin Hama; ZH, Zobar Hills. Fig. 1. Schematic...represent secondary minerals. Mafic rocks The Seyna Bela garnet glaucophanite exposed 2 –3 km east of the...samples. In sample S614A, collected from the Seyna Bela, the chemistry of the pale blue glaucophane (Fig...most representative studied rocks. (a –g) Seyna Bela. (a) Garnet glaucophanite. The textural equilibrium |  | | Journal (article/letter/editorial) | | is now characterized by discontinuous ophiolites (Bela, Muslimbagh, Zhob, Waziristan), associated melanges...slides were prepared and stained for K-feldspar and calcite. All thin sections of sandstones were examined...Cement is coarsely crystalline calcite, some of which is ferron calcite, and quartz. The minor compositional...Feldspar Olivine Wallostonite Chalcedony Ferron calcite Palagonite Zeolite Chert Volcanic Glass Pyroxene...derived from the upper Cretaceous Bibai Formation, the Bela volcanic group, and the ophiolites that are intermittently |  | | Journal (article/letter/editorial) | | (wollastonite) natrolite-thomsonite pectolite calcite Medium grade (~300–500 °C) grossular (“hessonite”)...(“hessonite”) diopside Mg-chlorite prehnite epidote calcite (±kirschsteinite, glaucochroite, aegirine, åkermanite...grade (>500 °C) grossular diopside wollastonite calcite monticellite melilite quartz (±spinel, epidote...(2), Stalvader (3), Val d’Ala (10)] or Fe3+ (e.g., Bela) (Armbruster and Gnos 2000b) in B-free or B-bearing...B-free material is optically positive. Moreover, the Bela vesuvianite (Armbruster and Gnos 2000b) is optically |  | | Report (issue) | | and copper-iron sulfides in quartz-epidote or calcite gangue in faults and fractures. Oxygen isotope...amygdules in the basalt now contain chlorite + calcite, the rest are rich in chalcedonic quartz and epidote...minor chalcocite and native copper, with quartz, calcite and epidote as the chief gangue minerals (Bateman...geologically related to the Tertiary intrusions. The calcite - quartz - epidote mineralogy of many of the veins...Geophysics and Space Physics, v. 13, p. 401-418. Csejtey, Bela, Nelson, W. H., Jones, D. L., Silberling, N. J. |  | Kaleem, Maria, Naseem, Shahid, Bashir, Erum, Shahab, Bushra, Rafique, Tahir (2021) Discrete geochemical behavior of Sr and Ba in the groundwater of Southern Mor Range, Balochistan, a tracer for igneous and sedimentary rocks weathering and related environmental issues. Applied Geochemistry, 130. 104996pp. doi:10.1016/j.apgeochem.2021.104996 | Journal (article/letter/editorial) | | Highway, con necting the towns of Winder, Uthal and Bela (Fig. 1). The study area is surrounded by rugged...Jurassic age and igneous rocks of Cretaceous age (Bela Ophiolite). Ferozabad Group is divided into Kharrari...with a mean of 1.19% (Shahab et al., 2016). The Bela Ophiolite (Cretaceous) is related to Neotethyan...Applied Geochemistry 130 (2021) 104996 Obduction of Bela Ophiolite, on the NW passive margin of Indian Plate...(Gaina et al., 2015). The chemical composition of Bela Ophiolite has signatures of MORB, SSZ and back-arc |
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