 | | Book | | Impianti litografia: GIERRE Sri, Bergamo Stampa: Novecento Grafico,Bergamo I disegni dei cristalli sono...Alessandro Veneziani MINERALI DELLAPROVINCIA DI BERGAMO Edizione aggiornata ad ottobre 2012 40° ANNIVERSARIO...Minerali Casella postale n. 1 -24020 Torre Boldone (Bergamo) Sito web: www.gom.it Indirizzo e-mail: segreteria@gom...Marco Sturla, G.O.M.- Gruppo Orobico Minerali - Bergamo 7 Inquadramento geologico di Federico Pezzotta...di specie mineralogiche comuni, quali fluorite, calcite,smithsonite anche in interessanti pseudomorfosi |  | | Journal (issue) | | spoken with our UK zeolite specialists Alan Dyer and Oneta Wilson. This enabled them to ·produce maps showing...shown in figure 7. Yellow and orange rhombs of calcite were also common, but many were overgrown by heulandite...the dump of waste metal. Weathered specimens of calcite and thomsonite soon revealed where fresh cavities...cavities could be located and we found large calcite crystals, both dog tooth and rhombs and balls of thomsonlte...attention was on the quarry walls and analcime, calcite gyrolite, mesolite, chabazite, heulandite, thomsonite: |  | | Journal (issue) | | chlorite, zoisite, carbonate (probably an igneous calcite) and a sodic amphibole. The inlier is very well...carbonate mineralisation. I have recovered some poor calcite crystals from rock found in the quarry. Some of...MAY 2013 SHOW AND TELL AFTERNOON Harry Critchley Oneta brought some zeolites from the Garron Cliff, Northern...material from the Lake District showing pink barytes. Oneta also passed on news of Beryl Taylor who is now staying...rather than being on her own up in Scotland. Beryl, Oneta, John V, Harry and Christine had attended the memorial |  | Dekov, Vesselin M., Hålenius, Ulf, Billström, Kjell, Kamenov, George D., Munnik, Frans, Eriksson, Lars, Dyer, Alan, Schmidt, Mark, Botz, Reiner (2009) Native Sn–Pb droplets in a zeolitic amygdale (Isle of Mull, Inner Hebrides) Geochimica et Cosmochimica Acta, 73 (10) 2907-2919 doi:10.1016/j.gca.2009.02.017 | Journal (article/letter/editorial) | | unique Sn–Pb droplets found in a closed analcime–calcite amygdale collected from a basaltic unit cropping...amygdale, their relationship with the host analcime + calcite and their Pb isotope composition (which does not...known as the North Atlantic Tertiary Volcanic Province (White, 1988). The initiation of volcanism within...British and Irish parts of the province (the British Tertiary Volcanic Province) has been related to the impingement...constituents of the British Tertiary Volcanic Province, where they are extensively developed in the Inner |  | | Journal (issue) | | the collection. It was decided that Alan Dyer and Oneta Wilson would work through the drawers of zeolites...requi re d and found out how to updat e the museum Oneta and Alan in zeolite heaven database. Several pieces...ived to continue the work in June.Alan Dyer and Oneta Wilson continued to w ork through the zeolites collection;... • Collected on SMLS field trips: e.g., brown calcite on analcime from Talisker Bay, Isle of Skye ( 1992);...Cornwall and Devon, and this year the focus is on CALCITE. The displays have been magnificent and created |  | | Book (edition) | | types of limestone rocks formed essentially from calcite originate from the accumulation of skeletons of...animal and vegetable marine organisms. But this calcite is usually con- — 8 — sidered to be a mineral...mineral because (1) it is usually identical with calcite formed by inorganic processes and (2) deformation...form and arrangement on a hexagonal prismatic calcite crystal show that the mineral is not hexagonal...of corrosion figures on a hexagonal prismatic calcite crystal. THE ISOMETRIC SYSTEM crystallographic |  | | Journal (article/letter/editorial) | | brecciasand algal reefsin the Prairie du Chien calcite, marcasite,jasperoid,and drusy quartz, and Group...medium-yellow sphalerite (rarelypale purple),barite,calcite,kaolinite,and pyrite (Hatchet al., 1976a).The ...northwestof Lansing, striking, vertical vein in Oneta and Trempealeau Iowa Formations is narrow Heyl...Leonard, 1897, p. 58-56 but rich; smithsonite,calcite, hemimorphite, cerussite are also present Mineral...sec. galena,limonite, and 15, T. 84 N, R. I E calcite km southwest of Baldwin on north side country |  | | Journal (issue) | | Doug Morgan, John Nowak, Bob Snowball, Alan Dyer, Oneta Wilson, John and Daphne Hall, Kemp Mcikle, Phil...Arkengarthdale he contributed barite and the elongated calcite crystals mentioned in UK Journal of Mines and Minerals...MATTHEDDLEITE SPHALERITE BIOTITE SMITHSONITE WITHERITE CALCITE BARITE SIDERITE WULFENITE COWLESITE AZURITE WULFENITE |  | | Report (issue) | | in these deposits include carbonates (ankerite, calcite, dolomite, and siderite), albite, biotite, and...infrequently. The second rank nonsulfide reported is calcite, which is in at least 10 percent of the deposits...member. COUNTRY Country, country-state and country-province are expressed in fourletter codes (Appendix A)...A). For country-state and country-province codes, the first two letters represent country and the second...second two letters represent state or province. AREA Unusally a local political subdivision. In the United |  | | Report (issue) | | interested in the Levant mine in Cornwall as well as calcite and barite. Richard, who was a policeman, also...underground locations and has a particular interest in calcite, the metallics and the secondary genesis of metals...and Fossil Collectors Club, the International Calcite Collectors Club as well as being members of the...the minerals of Derbyshire and Laurion in Greece. Oneta Wilson is a teacher whose specialist interest is...specimens. She has limited access to XRD facilities. Oneta is also a member of the Open University Geological |  | | Journal (issue) | | Examples of applications Quartz Fluorite Halite Calcite Baryte Garnet Pyroxene Gold mineralisation, sedimentary...Examples of minerals containing fluid inclusions are calcite, as precipitated from groundwaters (e.g. stalactites);...lighter hydrocarbons (hosted in di age netic vein-calcite). The existence of fluid inclusions has been known...generation of fluid inclusions, associated with calcite + tetrahedrite + galena + gold. This is an alternative...,j<-- - - ; ' - - I.58m wide win complex with calcite. baryte am Ouorite \ \ L/' \ SK410 South quarry |  | | Journal (issue) | | ..... _........... Of Microlights and Minerals Oneta Wilson 16 ........................................or slightly hidden tips or mines from the air! Oneta Wilson explains how she took a microlight flight...rocks, in other words their principal minerals are calcite and dolomite instead of the usual silicates. They...description was given of the occu rrence of silver in calcite veins associated with sulphide rich 'fahlbands'...complex and fascinating. Pictures were shown of calcite collecting underground in a mine where limestone |  | | Journal (issue) | | Al�O., i n apophyllites from Poona. India. 4. Calcite : CaCO., Reported by Polden ( 1 983) to occur as...{although abun da at some other Tasmanian sites calcite an d saponite in amy of Skye, Scotland (Sweet from...11-14 1 1 . PORCELLINI, G. (1 986). Notes from Italy. Mineralogical Record, Vol. 17, pp.205-206. 1...Tel : (206) 293-2255 Zeol ites Alan Dyer and Oneta Wilson U n iversi ty of Sa lford, D e p a rt m...Neopolitan yellow ashes in Phlegrean Fields, South Italy, were laid down from eruptions dated at 10,000 years |  | | Book (volume) | | lstftuto ltallano Edlzlonl Atlas S.p.A. 24100 Bergamo - Via Crescenzl, 88 • tel. 035/249711 Tutti I dlrlttl...1. volume lstituto Italiano Edizioni Atlas - Bergamo ,?- ad Adriano Raffo Presentazione Segno caratteristico...modificazioni cristalline (e quindi mi nerali: vedi calcite e aragonite, ecc.; vedi anche pag. 72). diorite...parziale delle fessure si puo trovare anche la calcite, non d i rado ben cristallizzata. In quantita subordinata...lVli11era/i sempre presenti, come ii la clorite e la calcite; ria, 1 'albite, 2) 1Vli11erali « guida •• e |  | | Journal (issue) | | informally on a dark and cold evening. Minerals from Italy and Barry - recent observations Stepping in to...longer account of their recent holiday in northern Italy than was given in the last newsletter, with quite...sphene on calcite with chlorite and haemetite, emerald in mica schist from the Salzburg province, garnets...Zillertal, sphene with calcite, quartz with epidote and chorite on pericline and calcite, sphene and pericline...as seen from his microlight, very reminiscent of Oneta Wilson's report in the March 2005 newsletter. At |  | | Journal (issue) | | the other and the differences between quartz and calcite were still grey! But I did have an eye for the...VANADINITE CLINOCHLORE CORNWALLITE IIIDALGOITE CALCITE PSEUDO-MALACIIITE SIDERITE BIRNESSITE AGARDITECE...Leicestershire LE6 OBJ David Whioo Ike Wilson Oneta Wilson Max Wirth 47A Marlow Road, Anerley, London |  | | Book | | Filrnset by Kcyspools Ltd, Golbornc, Lanes Printed in Italy 3 6 8 8 9 10 l1 11 23 30 33 36 45 205 209 2I...bite, adularia and often even some marvellous calcite crystals. Less frequent, but still presenting good...ofstalactites and stalagmites, or of travertine or fine calcite crystals. T he same happens to dolomites, although...(rhombic) ; diamond (cubjc) and graphite (hexagonal) ; calcite (trigonal) and aragonite (rhombic). ISOMORPHISM...carbonates afford an example of an isomorphic series: calcite (CaCO 3 ), rhodocrosite (MnCO 3 ) , sideritc (FeCO |  | | Book (volume) | | Spain by F. Vazquez Guzman Portugal by D. Thadeu Italy by P. Zuffardi European part of the U.S.S.R. by...borates, potash, salt, diamond, graphite, quartz, calcite, mica, feldspar, asbestos, talc, barite, fluorite...Southwest Europe embraces France, Spain, Portugal and Italy. Each volume has an introductory chapter of the...Baixo Tejo and Sado Basins Silica sand deposits Italy by P. Zuffardi Introduction Geological setting Stratigraphy...provinces Polymetamorphic Caledonian-Hercynian-Alpidic province Northern Alpine chain Southern Alpine chain C |  | | Journal (issue) | | excellent crystaJs of sphalerite, dolomite and calcite (some crystals of the latter being over 60 cm long...some excellent specimens of galena, sphaleritc, calcite and dolomite (all very useful indeed for teaching...sphalerite but with associateu pyrite, marcasite, calcite and dolomite, afmost invariably on a brecciated...chert matrix with a single 6x4 crystal of cream calcite (Photo 2). Jn the mine's final years it was worked...regarding exact source is a 6x4 creamy yellow calcite crystal (Photo 5) sitting an an I I x9 chert matrix |  | | Journal (issue) | | and some equally micro dentic forms. Some nearby calcite/zeolite vugs have traces of copper sulfides too...East Branch is proposing to mount a display of 'Calcite and Calcareous Rocks' at the Reunion. Our displays...dilute hydrochloric acid to samples of calcite and dolomite. With calcite we get a lot of bubbling as it dissolves...again giving off carbon dioxide. So we can tell calcite and dolomite apart by how they react with hydrochloric...oak can give off tannic acid which might attack calcite (more so for fossils than minerals). Don't use |  | | Journal (issue) | | Roy Starkey, Frank Bouweraerts, Michael Dunmore, Oneta Wilson, Harry Critchley and the late Sheila MacDonald...Gino Cervi, 2, 40033 Casalecchio di Reno, Bologna, Italy. Exeter Hall, Kidlington, Oxford, UK. OX5 1AB ...older weathered former working faces are seen in calcite crystals. the background. For the visiting group...groups of large reddish -brown tipped dog toothed calcite crystals, occasionally scattered with goethite...angular clasts of dolomitised limestone cemented by calcite with crystals formed in any void or cavity. Deeper |  | | Journal (volume) | | from Cornwall, the first occurrences in England Oneta Wilson, Alan Dyer, Vincent Holyer & Craig Williams...partially oxidised sulphides on vein quartz. CALCITE, CaC03 Calcite is uncommon in the quartz veins tone at...this dump, ankerite is common and there is some calcite. High on the east slopes of Swinburn Gill are two...are abundant quartz and baryte with ankerite and calcite. Further south on the east side of the gill the...the main East Side Level. In the current study calcite has only been found on two specimens from the main |  | | Journal (issue) | | Zeolites from the Kilpatrick Hills Alan Dyer & Oneta Wilson 34 .......................................were visited. Rne dolomite with occasional gemmy calcite crystals on it were collected from the working...along strike, together with weathered barite and calcite. The surprising observation was, as with Bendrick...quickly found a nice hand specimen of Dog tooth calcite in the lower level, many smaller dog tooth samples...tremolite which were found at the margin of a thin calcite vein. Crystalline prehnite was added to the bag |  | | Journal (issue) | | donated by members (Neil Hubbard, Roy Starkey, Oneta Wilson, Alan Dyer, Chris Jewson, Michael Doel, Frank...them. Doubling of images such as seen through a calcite rhomb is perhaps one of the most readily observed...Gino Cervi, 2, 40033 Casalecchio di Reno, Bologna, Italy. Exeter Hall, Kidlington, Oxford. UK. OX5 1AB ...“clean” pile there were plenty of boulders of dense calcite and fluorite vein material but crystal lined vugs...full, the minerals found included:- fluorite, calcite, baryte, galena, smithsonite and wulfenite. A very |  | | Journal (issue) | | nan Cearcall in veins and irregular masses with calcite, laumontite and pumpellyite. Prehnite is commonly...excellent specimens of stilbite, apophyllite and calcite in late 2009 and 2010. Unusually large crystals...is good to report, therefore, the discovery of calcite crystals at Sligachan Quarry in 2010 by French...early article in the UKJMM (Todd, 1989). Barytc, calcite, chalcopyrite, dolomite, fluorite, gypsum, millcrite...at a recent Bakewell show. Fluorite occurs in calcite-lined cavities in trachyte (an unusual geological |
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Oneta, Bergamo Province, Lombardy, Italy