 | | Journal (article/letter/editorial) | | ore genesis of the magnesite deposit of Eugui, Navarra (Spain) F. Velasco 1, A. Pesquera 1, R. Arce ~...644, Bilbao (Spain) 2 Divisidn de Geologia, Magnesitas Navarras, S.A. Zubiri, Navarre (Spain) Abstract....In the area of the magnesite deposits of Eugui (Navarra, Spain) studies on illite crystallinity, the degree...and transformation of the clay minerals and carbonaceous matter. The Eugui magnesite deposit, also known...AldudesQuinto Real massif in northern Navarra (Spain). These magnesite concentrations occur quite continuously |  | | Journal (article/letter/editorial) | | Petrography and Geochemistry of the Eugui Magnesite Deposit (Western Pyrenees, Spain): Evidence for the Development...Granada, Avda. Fuentenueva s/n, 18002 Granada, Spain GIORGIO GARUTI, Dipartimento di Scienze della Terra...31630 Zubiri, Spain Abstract The Eugui-Asturreta magnesite deposit (Western Pyrenees, Spain) forms a discoidal...because they incorporated carbonaceous matter and clay laminations of the replaced dolostone (incorporative...sequence. The petrography and geochemistry of the Eugui magnesite indicate that the deposit originated by |  | Kilias, Stephanos P., Pozo, Manuel, Bustillo, Manuel, Stamatakis, Michael G., Calvo, José P. (2006) Origin of the Rubian carbonate-hosted magnesite deposit, Galicia, NW Spain: mineralogical, REE, fluid inclusion and isotope evidence. Mineralium Deposita, 41 (7) 713-733 doi:10.1007/s00126-006-0075-5 | Journal (article/letter/editorial) | | carbonate-hosted magnesite deposit, Galicia, NW Spain: mineralogical, REE, fluid inclusion and isotope...Universidad Autónoma, Cantoblanco, 28049 Madrid, Spain M. Bustillo Departamento de Petrología y Geoquímica...Madrid, Spain J. P. Calvo Instituto Geologico y Minero de Espana, c/Rios Rosas 23, 28003 Madrid, Spain tion...stability field to that of magnesite. Keywords Spain . Magnesite . Rubian . Dolomitisation Introduction...located 9 km south of Sarria in Galicia, and the Eugui-Asturreta deposit in Navarra (∼20 Mt and 39 wt% |  | | Journal (article/letter/editorial) | | Isotopenzusammensetzung der Karbonate in der Magnesitlagerst~itte Eugui (Westpyremien) M. Kralik und J. Hoers Mit 2 Abbildungen...Zusammenfassung An 26 Karbonaten der Magnesitlagerstiitte yon Eugui wurde die C- und O-Isotopenzusammensetzung bestimmt...Magnesite Deposit Eugui { Western Pyrenees) 26 carbonates from the magnesite deposit at Eugui have been investigated...deposit. Einleitung Die Magnesitlagerstgtte yon Eugui liegt 35 Stragenkilometer n6rdlich von Pamplona...Abb. 1. Lageskizze der Magnesitlagersditte yon Eugui umgebenden Dolomit auszeichnet, spricht ffir ein |  | Fernandez-Nieto, C., Torres-Ruiz, J., Subias Perez, I., Fanlo Gonzalez, I., Gonzalez Lopez, J. M. (2003) Genesis of Mg-Fe Carbonates from the Sierra Menera Magnesite-Siderite Deposits, Northeast Spain: Evidence from Fluid Inclusions, Trace Elements, Rare Earth Elements, and Stable Isotope Data. Economic Geology, 98 (7) 1413-1426 doi:10.2113/gsecongeo.98.7.1413 | Journal (article/letter/editorial) | | Sierra Menera Magnesite-Siderite Deposits, Northeast Spain: Evidence from Fluid Inclusions, Trace Elements...de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain J. TORRES-RUIZ, Departamento de Mineralogía y Petrología...Universidad de Granada, Fuentenueva s/n, 18002, Granada, Spain I. SUBÍAS PÉREZ, I. FANLO GONZÁLEZ, AND J. M...de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain Abstract The Mg-Fe carbonate deposits of Sierra...are located in the Iberian Range of northeasten Spain within the Late Ordovician dolomitic formation of |  | | Journal (article/letter/editorial) | | magnesites may be attributed to the retardation effect of clay minerals (a likely precursor of the Mg-rich chlorites)...and Hoefs (1978) from the magnesite deposit at Eugui, Spain, where the conspicuous ~3C enrichments were...recognized in other magnesite deposits such as Eugui in Spain (Kralik and Hoefs, 1978) and Veitsch in Austria...metamorphic-hydrothermal origin has been suggested [e.g., Eugui (Kralik and Hoefs, 1978) and Serre de Montner (Halfon...followingsources: (1) Massive spar magnesites: Eugui, Spain (Kralik and Hoefs, 1978); Veitsch, Austria (P |  | | Journal (issue) | | Dunn Famous mineral localities: The Eugui quarries, Navarra, Spain .....................................20/#2 Little Three mine (CA), Zaragoza Gypsum (Spain), Calif. Locality Index $8 v.20/#3 Ouro Preto (Brazil)...Silver (Canada) A u s tr a lia .’ v.19/#5 Almaden (Spain), IMA, J. Berzelius, Probertite, Osarizawaite $8...have been found, in some cases with inclusions of clay or galena. The typical habit is elongated prismatic...gypsum crystals can be found embedded in marl or clay, and also as thin coatings on limestone and sulfides |  | | Journal (article/letter/editorial) | | carbonate rocks in Austria, Slovakia, Italy, and Spain. In Russia, Satka-type deposits are known in Upper...fine-grained (0.1–0.5 mm) and free of terrigenous clay admixture. This determines the chemical purity of... 44). Interlayers of low-carbonaceous carbonate–clay slates contain paragenesis of Fe–Mg chlorite and...of Suran Formation, phyllite-like and carbonate–clay slate, siltstone R1sr2; (7) fault; (8) gabbrodolerite...significant interaction of fluid with terrigenous and clay rocks. The Sm–Nd classification shows that the average |  | Lugli, Stefano, Morteani, Giulio, Blamart, Dominique (2002) Petrographic, REE, fluid inclusion and stable isotope study of magnesite from the Upper Triassic Burano Evaporites (Secchia Valley, northern Apennines): contributions from sedimentary, hydrothermal and metasomatic sources. Mineralium Deposita, 37 (5) 480-494 doi:10.1007/s00126-001-0251-6 | Journal (article/letter/editorial) | | for the Northern Graywacke Zone (Alps) and the Eugui deposit (western Pyrenees). Editorial responsibility:...displacement, such as quartz and clay minerals, as documented for the Eugui magnesite (Lugli et al. 2000)...the Alps (Morteani and Neugebauer 1990) and the Eugui deposit in the western Pyrenees (Lugli et al. 2000)...Petrography and geochemistry of the Eugui magnesite deposit (Western Pyrenees, Spain), evidence for the development |  | Herrero, M.J., Martín-Pérez, Andrea, Alonso-Zarza, Ana M., Gil-Peña, Inma, Meléndez, Alfonso, Martín-García, Rebeca (2011) Petrography and geochemistry of the magnesites and dolostones of the Ediacaran Ibor Group (635 to 542Ma), Western Spain: Evidences of their hydrothermal origin. Sedimentary Geology, 240 (3) 71-84 doi:10.1016/j.sedgeo.2011.08.007 | Journal (article/letter/editorial) | | the Ediacaran Ibor Group (635 to 542 Ma), Western Spain: Evidences of their hydrothermal origin M.J. Herrero...Madrid, Spain Instituto Geológico y Minero de España (IGME), Río Rosas 23, 28003 Madrid, Spain Dept. of...Zaragoza, Spain d Instituto de Geociencias (UCM-CSIC), C/José Antonio Novais, 28040 Madrid, Spain b c a...shale sample showing abundant quartz grains and clay minerals concentrated in layers. D) Microphotograph...composed of clay minerals and quartz, with smaller amounts of plagioclase and K-feldspar (Fig. 3C). Clay minerals |  | | Journal (article/letter/editorial) | | are possible even in carbonate rocks. Generally, clay minerals (or their metamorphic equivalents) may...recently proposed for the magnesite deposit of Eugui (Spain) by Velasco et al. (1987) may be applied to...ore genesis of the magnesite deposit of Eugui, Navarra (Spain). Mineral. Deposita 22:33-41 (1987) Wassermann |  | | Journal (issue) | | reads FLUORITE rather than DOLOMITE (from Eugui, Navarra, Spain). You can’t get good staff, in fact you...the clay onto the beach has now moved so far inland, I guess the hydrostatic pressure on the clay (rotational...of it this time around. Searching on top of the clay bank proved successful, and I managed to find a...easily break when being extracted but also when the clay slips and slides, so there are many broken pieces...sulphuric acid reacting with the calcium ions in the clay, and the sulphuric acid is formed by the decomposition |  | | Journal (article/letter/editorial) | | of alternating beds of micron-sized dolomite and clay-rich anhydrite (see Sp6tl, 1988 for details). S-isotope...ore genesis of the magnesite deposit of Eugui, Navarra (Spain). Mineral Deposita 22:33-41 Warne SSJ (1962) |  | | Journal (article/letter/editorial) | | accelerate the reactions. The formation of the swelling clay smectite can drastically damage the reservoir by... Inc. Exhibition quality crystals from Eugui, Navarra, Spain. Clear crystals were hand picked, then powdered...at 200°C. Calcite: Thiokol, Kaolinite: Source Clay Minerals Repository, KGa-1 Kaolin, Washington Co...could prevent the precipitation of the swelling clay depending on the fluid pH. Smectite forms in sodic-rich...precipitate another type of permeability reducing clay, illite or mixed-layer illite-smectite. Lowering |  | | Journal (article/letter/editorial) | | Minglanilla, Cuenca, Spain. The twins can reach 7 cm long and are associated with gypsum in clay. Minglanilla...Azure-colored crystal groups to 15 cm across have come from Eugui, Navarra. Blue radial groups of acicular crystals...Borrell, J. M. 1999. Minerales de España. Barcelona, Spain: Carroggio S.A. Chang, L. L. Y., R. A. Howie, and... New sites for aragonite in the Keuper facies (Spain). Mineral Up 2 (3): 50–59. Meixner, H. 1957. Die...prismatic crystals less than 3 cm long, associated with clay and gypsum. The aragonite from here is considered |  | | Journal (article/letter/editorial) | | Aesar (Lot No. 22658) Chihuahua, Mexico Almeria, Spain Kent, UK Norman Cross Quarry, Peterborough, UK Porthpean...Isle of Man Eugui, Spain Alfa Aesar (Lot No. I24P11) Eugui, Spain Asland Quarry, Montcada, Spain Breitenau...contamination by potentially acid-soluble silicate (clay) phases, but the amount fraction of CaCO3 ðxCaCO3 |  | | Book | | Remarkable specimens have also been found in France, Spain, United States, etc. 1 - Fluorite (Alston Moor...Hotazel, South-WestAfrica. 1 - Dolomite (Eugui, Navarre, Spain): 10 cm. 2 - Rhodochrosite (Alicante, Colorado...of the water; it contained 11 pounds of quartz, clay and iron oxide, but its total weight was 150 pounds...the famous mine at Almaden, near Ciudad Real, in Spain, which is exceptional in both quantity and quality...(Baia Spre, Romania): 10 cm. 2 - Cinnabar (Almaden, Spain): 1 cm. 3 - Stibnite (lie Shikoku, Japan): 45 cm |  | Henjes-Kunst, Friedhelm, Prochaska, Walter, Niedermayr, Andrea, Sullivan, Nora, Baxter, Ethan (2014) Sm–Nd dating of hydrothermal carbonate formation: An example from the Breitenau magnesite deposit (Styria, Austria) Chemical Geology, 387. 184-201 doi:10.1016/j.chemgeo.2014.07.025 | Journal (article/letter/editorial) | | Formation, thin layers of fine-grained limestone rich in clay minerals and in organic matter (“Flaserkalk”) are...“zebra-banding” seen in the magnesite deposit of Eugui (Spain), interpreted to be the result of metasomatic...magnesite besides magnesite rich in dark organic-clay materials) were cut and investigated separately...X-ray diffraction analysis failed to identify the clay minerals. The black, fine-grained matrix is interpreted...components for the trace element budget are the clay and phosphate minerals and the organic materials |  | | Journal (issue) | | in Italy. Throughout the 1600s and up to 1714, Spain directly maintained dominion over almost half of...cm on edge), from the Azcarate quarry, Eugui, Navarra, Spain. Roberto Appiani photo. Supplement to The...crystals to 13.6 cm on edge, from the Eugui mine, Navarra, Spain. Roberto Appiani photo. PYRRHOTITE ...29 cm, from La Collada, Pola de Siero, Astorias, Spain. Adalberto Giazotto photo. Supplement to The Mineralogical...Sardinia, Mexico, Greece, Nepal, India, the U.S., Spain and Madagascar. The passion for both climbing and |  | | Journal (issue) | | France Other 35 29 17 16 13 47 “Other” includes Spain, Iceland, Serbia, Greece, Brazil, Bolivia and Mexico...(Fassaite) Spinthere (Sphene) Wolnyn (Barite) Zorgite (clay group) Zygdite (Albite) These names suggest opportunities...Thracian and imported Egyptian slave labor. A Roman clay lamp found in the old workings of the Strashimir...produced in the Americas brought Figure 1. A Roman clay lamp, 4th to 5th cen tury A .D ., found in the...Underground ny of Happiness p Lucio—Brazil ena Mine & Co.—Spain ) Minerals & Jewelry 1a Minerals Ivory / Kowak Ivory |  | | Journal (issue) | | weathered the hematite has altered to blood-red, clay-like rounded masses. Ilmenite Fe2+T i0 2 Rare anhedral...coated by ochreous oxides, leucoxene, sericite or clay) becomes more prominent with increasing alteration...Morgan Hall (AMNH) $8 v. 1 9 /# 5 A lm aden (Spain), IM A , J. Berzelius, Probertite, O sarizaw aite.../# 2 Little Three m ine (CA), Zaragoza G ypsum (Spain), Calif. Locality Index $8 v .2 0 /# 3 O uro Preto...slavia), C aldbeck Fells (E ngland), SEM , Eugui quarries (Spain) $10 v .2 2 /# 3 M essina m ines (So. A |  | | Book (volume) | | chapters: France and Luxembourg by J. Bouladon Spain by F. Vazquez Guzman Portugal by D. Thadeu Italy...Yugoslavia; and Southwest Europe embraces France, Spain, Portugal and Italy. Each volume has an introductory...Conclusion . Distribution in space Distribution in time Spain by F. V3.zquez Guzman. 69 71 71 73 73 Geology...alone . Phosphates . Celestine Gypsum Magnesite Eugui Rubian • El Escorial • Valderrodero • Other showings...comprises the territories of France, Luxembourg, Italy, Spain and Portugal. It covers an area of l 451556km 2 |  | | Book | | Lower left: Cobaltocalcite group. from Lerida. Spain. Folch collection. Barcelona. Lower right: The mineral...Britain Ireland Italy Netherlands Norway Portugal Spain Sweden Swi~erland 181 13 63 72 75 16 99 136 138...Switzerland; and the Folch Museum at Barcelona, Spain. Because of the difficulty in researching Eastern...J ) ortugai e Madrid -,,.J ( Lisbon \ ~ Spain I 12 l I Belgium Tervuren •• 13 Brussels...Allier, France Mounana, Gabon Rodalquilar, Almeria, Spain Tachgagalt, Morocco Tachgagalt, Morocco Musonoi |  | Voigtländer, G., Möller, P., Ellmies, R., Krupenin, M. T., Germann, K. (1999) Origin of giant stratabound deposits of magnesite and siderite in Riphean carbonate rocks of the Bashkir mega-anticline, western Urals. Geologische Rundschau, 87 (4) 589-602 doi:10.1007/s005310050233 | Journal (article/letter/editorial) | | dolomitic host rock. Calcite and pyrite are, besides clay minerals (illite/sericite) and chlorite, the only...crystallinities were determined by X-ray diffraction from the clay fraction (<2 µm) of both magnesite and dolomite...consists of five cycles of alternating carbonate- or clay-dominated layers (Fig. 9). The carbonates represent...(conglomerates, sandstones) Faults Satka Fm. of relictic clay which is often resedimented (slanzy peremyva; Davydenko...below low- or non-permeable rocks such as argillite/clay layers or diabase sills, indicating a trapping of |  | | Journal (article/letter/editorial) | | oriented clay mounts (<2 µm) were analyzed for the identification of phyllosilicates. Whole-rock clay mounts...American Shale Composite (NASC), then the detrital clay component could account for <1 ppm of the total...Petrography and geochemistry of the Eugui magnesite deposit (Western Pyrenees, Spain): Evidence for the development |
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