 | García-Romero, Emilia, María Manchado, Eva, Suárez, Mercedes, García-Rivas, Javier (2019) Spanish Bentonites: A Review and New Data on Their Geology, Mineralogy, and Crystal Chemistry. Minerals, 9 (11) 696 doi:10.3390/min9110696 | Journal (article/letter/editorial) | | Complutense University of Madrid, 28040 Madrid, Spain Geosciences Institute (IGEO) Spanish Research Council...28040 Madrid, Spain Department of Geology, University of Salamanca, 37008 Salamanca, Spain; a87578@usal...Cabo de Gata volcanic area (Almería Province) in the southern part of Spain, where the three main deposits...Bentonites are very important industrial rocks, with Spain being a significant producer worldwide, since its...dissolution–precipitation processes [14,32,42,47–51]. In Spain, there is active exploitation of bentonites in three |  | | Journal (article/letter/editorial) | | djurleite according to their atomic Benasque, Huesca (Spain), in the acidic subvolcanic orientation. As Evans...stream, in Luesma, nature has difficulties Zaragoza (Spain), achieving a stable in the Stephanian association...in Pardos, locality for this type Guadalajara (Spain) of pseudomorph is or in the ignimbrites the Dzhezkazgan...1990s. Dzhezkazgan (Drugman, 1922) and Zaragoza, Spain. 6 mm crystal. Miguel Calvo coll. djurleite crystals...very common (Moore, 2016). since, of these two In Spain, specimens of dimorphic minerals, kyanite pseudomorphs |  | Arribas, Antonio, Cunningham, Charles G., Rytuba, James J., Rye, Robert O., Kelly, William C., Podwysocki, Melvin H., McKee, Edwin H., Tosdal, Richard M. (1995) Geology, geochronology, fluid inclusions, and isotope geochemistry of the Rodalquilar gold alunite deposit, Spain. Economic Geology, 90 (4) 795-822 doi:10.2113/gsecongeo.90.4.795 | Journal (article/letter/editorial) | | FluidInclusions, andIsotopeGeochemistry of the Rodalquilar GoldAluniteDeposit,Spain ANTONIOARRIBAS, JR.,* Department...94025 Abstract The Rodalquilar epithermalAu alunitedepositoccurswithinthe Rodalquilar calderacomplexin...Gatavolcanic fieldin southeastern Spain.The Rodalquilar caldera formedby eruption of therhyolitic Cintoash-flow...collapse andresurgence. Ore deposits withinthe Rodalquilar calderacomplex consist of low-sulfidation Pb-Zn-(Cu-Ag-Au)...the Cabode Gataregionstartedin the early THE Rodalquilar depositin southeastern Spainis the first epithermal |  | López-García, José Ángel, Oyarzun, Roberto, Lillo, Javier, Manteca, José Ignacio, Cubas, Paloma (2017) Geochemical Characterization of Magnetite and Geological Setting of the Iron Oxide ± Iron Silicate ± Iron Carbonate Rich Pb-Zn Sulfides from the La Unión and Mazarrón Stratabound Deposits (SE Spain) Resource Geology, 67 (2) 139-157 doi:10.1111/rge.12124 | Journal (article/letter/editorial) | | La Unión and Mazarrón Stratabound Deposits (SE Spain) José Ángel LÓPEZ-GARCÍA,1 Roberto OYARZUN,1,2 Javier... Madrid, Spain Abstract From a mineralogical point of view the La Unión ore field (SE Spain) can be regarded...mineral chemistry, Miocene, Pb–Zn–Fe ore deposits, SE Spain. Received 1 February 2016. Revised 5 September...Geológicas, Universidad Complutense, 28040 Madrid, Spain. Email: jangel@ucm.es © 2017 The Society of Resource...Geology 140 Unusual magnetite-rich Pb–Zn ores from Spain Fig. 2 Summary of main geologic, mineralogic and |  | | Journal (article/letter/editorial) | | with alunite,large concentrations of alucurrencesis opal (amorphousby X-ray). Leaching nite generallyshowonly...as Cochiti, New Mexico (Bundy, 1958), and Rodalquilar,Spain (Lodder, 1966). Volcanicsof intermediatecompositionoccurin...vermiculite and chlorite-bearing subzones. At Rodalquilar, pyrophyllite occurs adjacent to the alunite-quartzzone...Figure 4. Calculatedinvariantpointsat K-mica-alunite-opal • apparently has not been re1 bar and 1,000 bars...at 300ø C, although the slopes are apThe effectof opal relativeto quartz on the muscoproachingideal. The |  | | Report (issue) | | (Corn, 1975). Laterally extensive cristobalite and opal that replace quartz latite are found southwest of...siliceous sinter (fig. 3) overlies the cristobalite and opal. Some sinter samples contain plant debris, and up...1989) , Lake City, Colorado (Slack, 1980), Rodalquilar, Spain (Arribas and others, 1988; Sanger-von Oepen...Rye, R.O., and Castroviejo, R., 1988, Rodalquilar deposits, Spain, first example of caldera-related epithermal...mineralization associated with the Rodalquilar epithermal gold-deposit in southeast Spain: Mineral. Deposita, v. |  | | Journal (article/letter/editorial) | | downward from an inner shallow zone of kaolinite 1T-opal ± dickite ± alunite (<20-µm-diam grains) to an outer...kaolinite 1T-alunite (<50-µm-diam grains)-quartz-opal ± dickite ± cristobalite. Kaolin quarries near the...to kaolinite 1T-opal ± cristobalite and then to montmorillonite-kaolinite 1T ± opal, consistent with...), include kaolinite, alunite, silica minerals (opal CT, cristobalite, chalcedony and quartz), K-feldspar...alteration is zoned laterally from kaolinite-alunite-opal, close to vertical fractures that occur in the central |  | Dill, H. G., Bosse, H.-R., Henning, K.-H., Fricke, A., Ahrendt, H. (1997) Mineralogical and chemical variations in hypogene and supergene kaolin deposits in a mobile fold belt the Central Andes of northwestern Peru. Mineralium Deposita, 32 (2) 149-163 doi:10.1007/s001260050081 | Journal (article/letter/editorial) | | La Providencia Alunite, tridymite Cristobalite, opal CT Kaolinite, alunite Kaolinite Cristobalite,halloysite...it is accompanied by cristobalite, tridymite and opal-CT. Other S-bearing minerals such as barite and...Cretaceous sandstone. Cristobalite, tridymite and opal- acidic than at Sangal, where the opposite is the...Fluid inclusion studies of the Rodalquilar gold alunite deposit, Spain, by Arribas et al. (1995) yielded...siliceous sinter containing alunite, cristobalite, opal CT and tridymite as well as the smectite-silica-kaolin |  | | Journal (article/letter/editorial) | | Harvey and Vitaliano, 1964; Ashley, 1974), Rodalquilar,Spain(Lodder, 1966; Vivaldi et al., 1971), and Chinkuashih...presumedresidualorigin (e.g.,Schoenet al., 1974), alongwith opal,cristobalite, and minor amountsof pyrite and/or...Gold-alunitedepositsand zonalwallrockalteration near Rodalquilar,southeastSpain:Univ. Amsterdam, Geol. Inst. Mededeel...mineralizationand wall-rockalterationin the Rodalquilar gold-field,S.E. Spain:Soc.MiningGeologists JapanSpec |  | Chouinard, A., Williams-Jones, A. E., Leonardson, R. W., Hodgson, C. J., Silva, P., Tellez, C., Vega, J., Rojas, F. (2005) Geology and Genesis of the Multistage High-Sulfidation Epithermal Pascua Au-Ag-Cu Deposit, Chile and Argentina. Economic Geology, 100 (3) 463-490 doi:10.2113/gsecongeo.100.3.463 | Journal (article/letter/editorial) | | rock-flour matrix altered to subequant alunite, opal, and ± jarosite. Structure Faults and fractures...The alteration assemblage is quartz, chalcedony, opal, kaolinite and native sulfur. Although primary igneous...postmineralization Steam-heated Characteristics Quartz and opal, kaolinite, native sulfur Late alteration prior...for example, by Arribas et al. (1995) at Rodalquilar (Spain) and by Hedenquist et al. (1998) at Far Southeast...the El Indio deposit, Jannas et al., 1990; and Rodalquilar, Arribas et al., 1995). Moreover, the gold stage |  | | Journal (article/letter/editorial) | | central zone. These bodies consist of quartz plus some opal and are sub-vertical in orientation. Both massive...this category are such ‘classic’ deposits as Rodalquilar (Spain),3 Summitville (Colorado),20,62 Lepanto (Phillipines)...and isotope geochemistry of the Rodalquilar gold alunite deposit, Spain’, Econ. Geol., 1995, 90, 795–822 |  | | Journal (article/letter/editorial) | | small-sample averages from Nansatsu (Japan), Rodalquilar (Spain), Paradise Peak (Nevada) and El Indio (Chile;...leaching, black matrix hydrothermal brecciation, opal–jarosite matrix brecciation, and finally late oxidation...Transaccion epithermal gold deposit, Rodalquilar mining district, southeast Spain. Inst Mining Metall Trans Sect |  | | Journal (article/letter/editorial) | | Thelargestearlybrecciaunitisupto 60 m (200 ft) and opal replacequartz latite southwestof the acid wide andapproximately...Mountain Sout --'"' • SouthMountain C•yst•balitq./Opal Fault I •,•ummltvil• • Elevation (m). deposit •...1989), Lake City, Colorado (Slack, 1980), Rodalquilar, Spain(Arribaset al., 1988; SSnger-von Oepenet al...and Castroviejo,R., 1988, Rodalquilardeposits, Spain,firstexampleof caldera-related epithermalgoldmineralizationin...theRodalquilarepithermalgold-deposit in southeast Spain: Silverton,andLakeCity calderasin the westernSa |  | | Report (issue) | | ___________________———— France ________________________ Spain ________________________ Italy _________________________...Greece, Iran, Japan, Pakistan, Republic of Korea, Spain, and Turkey. INTRODUCTION HISTORICAL BACKGROUND...commun., 1977); (10) asso ciated with cinnabar, opal, and other hypogene alter ation minerals in the...1962, p. 141-142). SPAIN An alunite deposit near Riazza in Segovia Province, Spain, recently was investigated...hydrothermally altered Tertiary vol canic wallrock at Rodalquilar, near the Mediterra nean coast, 40 km east-northeast |  | | Report (chapter) | | Island of New Zealand, the Philippines, Fiji and Spain are described. They are commonly generated less...southwest portion of the ring fault zone. 47 Spain In the western San Juan Mountains, Colorado, epithermal...veins have been worked in the Rodalquilar area, near Almerla, southeastern Spain. 49 The veins occur within...Mountain, Colorado, Goldfield, Nevada, and Rodalquilar, Spain. Travertine aprons and exotic manganese oxide...specularite. Mimetite, tridymite, quartz, chalcedony, opal, sanidine, white mica, zeolites, topaz, fluorite |  | Nadeau, Olivier, Mick, Emily, Robidoux, Philippe, Grassa, Fausto, Brusca, Lorenzo, Voinot, Alexandre, Leybourne, Matthew I. (2021) Lithium isotopes and Cu-Au concentrations in hydrothermal alterations from Solfatara Volcano, Campi Flegrei caldera complex, and La Fossa volcano, Vulcano Island, Italy: Insights into epithermal ore forming environments. Ore Geology Reviews, 130. 103934pp. doi:10.1016/j.oregeorev.2020.103934 | Journal (article/letter/editorial) | | epithermal deposits. At Solfatara, amorphous and hydrous opal-A is responsible for shifts in δ7Li values, from...licates, sulfates, and/or opal-A. It is proposed that the combination of opal-A, decreases in δ7Li values...Fe oxides, the dissolution of clinopyroxene and opal, and the invasion of the samples by α-cristobalite...between low δ7Li and high Cu-Au values dominated by opal-A, and higher δ7Li and lower Cu-Au values dominated...blankets of steam-heated-, kaolinite-alunite-sulfur-opal alteration (Simpson and Mauk, 2007; Simpson et al |  | | Journal (article/letter/editorial) | | the November 2002 Eruption Samples Cristobalite Opal-CT Quartz Ejecta PAP_01 X X PAP_02 X X X...(assemblage 4) and (b) ash-2. Mineral abbreviations: C= Opal; Ka= Kaolinite; Ma= Marcasite. to 91°C and TDS...and isotope geochemistry of the Rodalquilar gold alunite deposit, Spain. Economic Geology, 90, p. 795-822 |  | | Report (volume) | | suspended sediment in the crater lake (pH 0.6) includes opal CT and gypsum, plus native sulfur on the surface...ejected fragments, some altered to cristobalite and opal CT, with pyrite, anhydrite, native sulfur, gypsum...vein-like masses or “ledges” (e.g., Nansatsu, Rodalquilar, Summitville). Although there are many minerals...district (Japan). European examples include Rodalquilar (Spain), Furtei (Italy), Lahoca (Hungary), Bor (Yugoslavia)...as Yanacocha and Pierina. Rodalquilar, Spain The mineralization Rodalquilar HS deposit is the in |  | Marchev, Peter, Downes, Hillary, Thirlwall, Matthew F., Moritz, Robert (2002) Small-scale variations of 87Sr/86Sr isotope composition of barite in the Madjarovo low-sulphidation epithermal system, SE Bulgaria: implications for sources of Sr, fluid fluxes and pathways of the ore-forming fluids. Mineralium Deposita, 37 (6) 669-677 doi:10.1007/s00126-002-0278-3 | Journal (article/letter/editorial) | | of silica (quartz, chalcedony, amethyst, agate, opal). Most of the large veins show abundant evidence...and isotope geochemistry of the Rodalquilar gold alunite deposit, Spain. Econ Geol 90:795–822 Atanasov |  | | Journal (article/letter/editorial) | | consisting of cristobalite, pyrophyllite, kaolinite, opal-CT, talc, pyrite, native sulfur, and alunite. Similar...consists of cristobalite, pyrophyllite, kaolinite, opal-CT, talc, pyrite, native sulfur, and alunite (Herzig...and isotope geochemistry of the Rodalquilar gold alunite deposit, Spain. Econ Geol 90: 795± 822 Bischo |  | | Catalog/List | | -----------'----------------- 1064 ANAPAITE Bellver, Lerida, Spain Small yellowish green crystals on matrix, ½x½£2...-·· Al sio _- - --- ·· 140 ANDALUSITE Andalucia Spain. Type Location pure grey mass with possible crystal...red massive lx2 £1 2x2 £2 676 ARAGONITE Aragon Spain individual pinkish hexagonal crystal lxl £4 810...CuFcP0/4 lxl £4 lx2 £6 39 ■ CASSITERITE Galicia, Spain (no other details] 58 CHAMBERSITE Venice Dome, Lousiana...50 !x2£3 2x2£5 2x2£7 98 924 CINNABAR Almaden Spain Rich red masses in matrix. A poisonous mineral. |  | | Catalog/List | | Nandan Co, China 1064 ANAPAITE Bellver, Lerida, Spain brown chips, probably mixed with Gocthite and Lepidocrocite...ALMANDINE Fauske Norway 140 ANDALUSITE Andalucia Spain. Type Location pure grey nuL~s with possible crystal...£2.50 _ ~x2£5 f'LUORESCENl 676 ARAGONITE Aragon Spain individual pinkish hexagonal crystal lxl £4 Recsk...lxl £3 Ix2£5 2x2£10 39 El CASSITERITE Galicia, Spain (no other details] Rich dark brown cleavages/crystal...£1. SO I x2 £3 2x2 £5 2x2 £7 98 CINNABAR Almadcn Spain Rich red masses in mntrix. A poisonous mineral. |  | So, Chil-Sup, Zhang Dequan, , Yun, Seong-Taek, Li Daxing, (1998) Alteration-mineralization zoning and fluid inclusions of the high sulfidation epithermal Cu-Au mineralization at Zijinshan, Fujian Province, China. Economic Geology, 93 (7) 961-980 doi:10.2113/gsecongeo.93.7.961 | Journal (article/letter/editorial) | | associationof the alunite alteration (alunite + (quartz+ opal+ pyrite) groupof intermediate-salinity (about8-12...1-1.9 wt % NaC1;Fig. 11), indicating Summitville, Spain,Arribaset al., thattheZijinshan fluidshaveevolved...mainlythrough cooling Peru,Deenet al., 1994;Rodalquilar, anddilutionasthesystem waned.We believethatthecooling...withinthe phyllicanddiekite al., 1994),and godalquilar, Spain(Arribaset al., 1995a). alteration zones,possibly |  | | Catalog/List | | -- ·-· - - - ··- ··-- - ··· ·- - ·-·----- - 849 OPAL Carlaze Pit St Austell Cornwall Rich, jelly-like...sections FLUORESCENT green short wave lxl £4 lx2 £8 opal Hemerdon open pit, Devon, collected in 1969 2x2...Ix! £4 lx2£8 FLUORESCENl 1038 OPAL Virgin Valley, Nevada, USA Semi-opal pale yellow-green translucent...lxl £5 lx2 £10 Pyroxene 676 ARAGONITE Aragon Spain individual pinkish hexagonal crystal lxl £4 235...AsO/4 OH lxl £2 lx2 £4 140 ANDALUSITE Andalucia Spain. Type Location 768 AXINITE Obira Mine, Oita Prefecture |  | | Catalog/List | | Quebec, Ca, 1064 3 AGRELLITE Bcllver, Lerida, Spain Rich fibrous pale grey-brown mass. Small yellowish...------------------ALLOPHANE 501 ANDALUSITE Andalucia Spain. Type Location New East Whcal Russell mine, Devon...2 x 2 £4 2x3 £6 3x4 £10 ½" £3 ARAGONITE Aragon Spain BARYTES Trelde Ness Denmark 1029 6 76 Replacing...of a fire extinguisht 52 1 CASSITERITE Galicia, Spain (no other details] 39 /\RTIFICIAL.3111m blue single...x2 £5 ½ x l £ 1. 5 0 l x l £3 CINNABAR /\lmadcn Spain CERUSSITE Mibladen Morocco 98 1 0 53 Rich red masses |
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