 | Parker, R. L., Stalder, H. A., de Quervain, F., Niggli, E., Graeser, St. (1973) Die Mineralfunde Der Schweiz (2nd ed.) Verlag Wepf & Co., Basel. | Book (edition) | | Rauchquarz (etwas vcrgroOert). Cavradi, unierstes Val Curnera. (Phot. I<. Buri, Sammlung V. Sichcr) DIE...3-85977-002-0 Copyright by Wepf & Co., Basel Printed in Switzerland Buchdruckcrci Birkhauser AG, Basel inTIWNRI...Talschaften des Valle d'Ossola und des Val Mera, allenfalls auch des Val Malenco einzubeziehen. Unsere Begri...GoUhardmassiv 38 Fundgebiet 1 : Amsteg-Maderanertal-Val Cavrein (H. A. Stalder) . Fundortgruppen 1 a bis.... . . . . . . . . . . . Fundgebiet 3 : Fellital-Piz Giuv-Oberalpstock (F. de Quervain) . Fundortgruppen |  | | Book | | the private Bally foundation at Schonenwerd, Switzerland; and the Folch Museum at Barcelona, Spain. Because...Germanspeaking countries (Germany, Austria, Switzerland). The reasons for this are partly because they...should be of specimens from localities within the region of that museum, or at least from the country concerned...rose", 10cm across, from Fibbia, St Gotthard, Switzerland. lnstitut fur Mineralogie und Lagerstattenlehre...Mineralogical Museum, University of Bonn. 22 Quartz (Rock crystal), of Dauphine habit, from the classic |  | | Book | | second piece: the flakes are mica, the glassy grains quartz, and the yellowish grains feldspar. The whole specimen...hich feldspar, quartz, and mica are the main constituents. Quartzite consists of quartz only, mica schist...schist of quartz and mica, and eclogite of garnet and augite. There are also rocks which consist of fragments...100,000 years ago, beads made of limestone and quartz were found, and when man began to decorate cave...hexagofja/ and trigomiiPI. 12corundum, Pls. 14- 17 quartz, Pls. 22, 23 calcite, Pl. 30 apatite and -pyromorphite |  | | Journal (issue) | | looking squarely into the top of a stone at the culet region; doubling is only seen when focusing deeper at...gemstone material in facets, but not in the culet region (here somewhat out of focus) because the view is...2300°C; • growing crystal 100°C cooler than the feed region; • seed crystal orientation slightly off axis and...relative transparency in the near-ultraviolet, a region where near-colourless diamond is transparent and...diamondiferous gneiss and marble from the Lake KumdyKol region of the Kokchetav Massif, N Kazakhstan. The examination |  | | Book | | Litchfield County, where good crystals were taken from quartz veins in a variety of metamorphic, plutonic and...Litchfield, where a mass of white quartz on a ridge had once been mined for quartz, and large ilmenite masses...ilmenite crystals to 7 .5 cm in matrix of massive quartz from these dumps-adding that, in his judgment,...localities for good ilmenite crystals exist in the region (Brunet, I 977b ). NEW YORK Amity, Orange County...9: 1 (Gaines, 1971; Pimentel er al., 2009). SWITZERLAND Maderanertal east of Arnsteg, Uri. In the world |  | | Journal (issue) | | Gemmological Institute, Falknerstr. 9, CH-4001 Basel, Switzerland 3. Institutfiir Mineralogie, Ruhr-Universitat...following collections: E. Gubelin, Lucerne, Switzerland (5); F.H. Pough, Reno, Nevada, USA (8); M. Schaeffer...study: Professor Dr E. Giibelin of Lucerne, Switzerland, Dr F.H. Pough of Reno, Nevada, USA, and M. Schaeffer...Detmold, Germany. Professor H.A. Hanni of Basel, Switzerland, kindly reviewed the manuscript. References...News, 9, 10--11 Van Praagh, G., 1947. Synthetic quartz crystals. Geological Magazine, 84, 98-100 Walrafen |  | | Book | | Several specimens of a particular mineral, e.g. quartz, may vary not only in colour (see plates) but also...graphite. The basic element of the commonest mineral — quartz — is silica (SiO,), a compound of silicon and oxygen...— some 40-50 — are generally rock-forming, e.g. quartz, felspar, mica, pyroxene, amphibole and olivine...At a later stage they often become filled with quartz, agate or chalcedony. The largest part of the gases...walls of the fissures. Well known minerals, such as quartz and calcite, originate at this stage and are known |  | | Book (edition) | | very old origin, often without lrnown source. e.g. quartz or cinnabar. Current practice most often names...polished mineral surface, expressed in clase. 7 - quartz. 8 - topaz, 9 - corundum, 10 - dia- percentage...are not abbreviated, e.g. canton (Switzerland), vilayet (Turkey), region (Chile), kray and oblast (Russia)...by Mobutu, and is now the Katanga administrative region again. The former Kivu province is now divided...United States or of the Upper Silesian historical region in Poland, where the importance of ore-bearing | | | Book | | Several specimens of a particular mineral, e.g. quartz, may vary not only in colour (see plates) but also...graphite. The basic element of the commonest mineral quartz — is silica (SiO2), a compound of silicon and oxygen...— some 40-50 — are generally rock-forming, e.g. quartz, felspar, mica, pyroxene, amphi bole and olivine...At a later stage they often become filled with quartz, agate or chalcedony. The largest part of the gases...walls of the fissures. Well known minerals, such as quartz and calcite, originate at this stage and arc known |
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