 | | Journal (article/letter/editorial) | | system Simona Mazziotti Tagliani & Eugenio Nicotra & Marco Viccaro & Antonio Gianfagna Received: 21 November...ferroan-enstatite, hematite, pseudobrookite and tridymite as secondary mineralization. In addition to some...material, which is available to authorized users. S. Mazziotti Tagliani (*) : A. Gianfagna Dipartimento...Università di Roma, P.le A. Moro 5, 00185 Roma, Italy e-mail: mazziottitagliani@gmail.com E. Nicotra :...Università di Catania, Corso Italia 57, 95129 Catania, Italy E. Nicotra Dipartimento di Scienze della Terra, |  | | Book | | Mineralogia e Petrologia Universita di Modena Via S. Eufernia 19 1-41100 Modena Volumes 1 to 9 in this...connection of two prisms shown in Fig. O.2F; the sites S (centres of the cages, multiplicity = 24) and W (midpoints...all free bonds have the same direction, or the tridymite or cristobalite sheet, in which the free bonds...(black dots) or downwards (white circles). a - The tridymite (or bikitaite) sheet, with a regular alternation...-~ i- t-n c Ie n __ 3_ \14 _ ~ - m ~ s: g ::> N o § ~. 8' ::> ..... [ C1l ::> |  | | Journal (issue) | | 3 Pseudobrookite Twins from the Lemolo Lake Quarry Don Howard and Kent England Pseudobrookite was...consideration for this was put forward during the 1920‟s, and a number of twin planes of the form {hk0} were...the margins of a boulder in the west end of the quarry that was originally collected in 1982 and 1983...three minerals: enstatite, pseudobrookite, and tridymite, with ilmenite crystals conspicuously absent....found, as black needles at the contact where this basalt layer flowed over a scoria layer. The presence |  | | Journal (article/letter/editorial) | | striJverite, 605 British Isles ENGLAND Bosahan quarry, Carnmenellis, Cornwall, granite (weathered), kaolinite...mine, Bonsall, fluorite, 4oi Jughole mine, Masson Hill, Matlock, fluorite, baryte, 81 I Ladywash mine,...Masson opencast, Masson Hill, Matlock, fluorite, baryte, 81 I Oxclose mine, Masson Hill, Matlock, fluorite...Elbolton Hill, fluorite, 4Ol Hazlehead quarry, Penistone, muscovite, I76 Hepworth Iron Co. quarry, Hazlehead...Swinden Limeworks quarry, Linton, fluorite, 4oi WALES(Cymru) Dorothea slate quarry, Nantlle, muscovite |  | | Journal (article/letter/editorial) | | septa in the matrix above the letter S in Fig. 4a. The Quartz-basalt of Taradake, Japan. By T. OGURA....known. S. Kodzu mentioned the mode of occurrence and chemical properties of the quartz-basalt of Kasayama...Kasayama, Province Nagato (I).2 In the neighbourhood of the Taradake volcano in south-western Kyushu, the...the dacite and basalt intrude into or flow over the Tertiary sediments and are covered by agglomerate...hornblende-andesites. The order of eruption of dacite and basalt is obscure in this district, owing to the scanty |  | | Journal (article/letter/editorial) | | SANDERS, I. S., SCHWERTMANN,U., FRIEDRICH,G., and WIECHOWSKI, A., titanomaghemite in basalt, 299 Almandine-grossular...Greenland, 107 Analcime-bytownite intergrowth in basalt, Skye, Scotland, 382 ANDERSEN,T., carbonatite-related...Argentotennantite, Silvermines, Ireland, 293 ARes, C. E. S., see ZWAAN,P. C., 473 Arsenopyrite, spectroscopic...Asbestos, flexibility, 327 ASHWORTH,J. R., low-tridymite polymorphs, 89 Atacamite, synthesis and stability... J., see DE BRUIYN,H., 385 BEVAN, J., and SAVAGE,S., dissolution of K-feldspar, 415 BEVINS,R. E., see |  | | Catalog/List | | return of specimen(s), in good condition. Please quote the name and number of the specimen(s) required, and...£28.00. ATACAMITE. Duke of Cornwall Mine, Kadina, S. Australia. Pure, bright green, botryoidal masses...Quartz/Slate veinstuff. 3x2xlt". £3.50. CINNABAR. Hunan Province, China. Fine, lustrous, reddish sharp twinned...silky masses lining numerous small cavities in Basalt matrix. This is the first occurrence of this rare...thiCk. £2.50; Specimen BVery rich deep reddish lustro~s vein section with minor Chrysocolla and Serpentine |  | | Catalog/List | | are payable without in U. S. dollars. Foreign accounts should be paid in U. S. ban~ dra ft, international... Few of the minute crystals you see on mine or quarry dumps or even on cabinet specimens will be satisfactory...at the pristine source underground ar an fresh quarry faces and the like. Very aften though, such source...desk blotter; it would be inconvenient to have one 1 s hand stuck to a desk or table top. MOUNTING TECHNIQUES...crystal form, habit and color depends on the observer•s familiarity with crystals of the minerals likely to |  | | Catalog/List | | limonite ....... . Utah Toelle County, Gold Hill, Gold Hill mine --=.rransparent micro crystals on limonite...Calcium magnesium iron aluminum silicate Spain Province of Huesca, Estopinian ~lue massive in ancient...white twin xl groups, minor muscovite PERICLINE Italy, Austria, Switzerland Alpine areas Fine large white...calcium magnesium iron titanium alumino-silicate Italy Island of Linosa ----Y:-ustrous black rectangular...hydrated phosphate of calcium and iron Spain Gerona Province, Bellaver de Cerdena ~ry sharp triclinic xls in |  | | Catalog/List | | 5mm vugh in lxl inch Basalt Zeolite lxl £5 166 II: ■ GISMONDINE Green road Quarry, Ballyclare, County...County Antrim Chalk')' white areas on Basalt. ½ inch £4 I inch £8 Zeolite 169 ■■ GONNARDITE Hillsport, Island...Antrim, N.lrelan Quite rich white radiating mass on Basalt Zeolite _{ Ix! £6 .~ 242 ■■ GUDMUNDITE Pezinok...metallic mass Ix½ £5 Ix! £8 Fe Sb S 370 ■■ HAINITE Bortolan Quarry, Pocos de Caldas Minas Gerais, Small...£4 lx2 £8 2x2 £16 Cu Al OH S0/4 H/20 Cu Zn Fe Sn S ✓418-■■ KORSHUNOVSKITE Udachnaya Pipe. Yakutia |  | de Souza, Zorano Sérgio, Wang, Chao, Jin, Zhen-Min, Li, Jian-Wei, Yang, Junlong, Botelho, Nilson Francisquini, Viana, Rúbia Ribeiro, dos Santos, Larissa, Liu, Peng-Lei, Li, Wei (2019) Pyrometamorphic aureoles of Cretaceous sandstones and shales by Cenozoic basic intrusions, NE Brazil: Petrograhic, textural, chemical and experimental approaches. Lithos, 326. 90-109 doi:10.1016/j.lithos.2018.11.033 | Journal (article/letter/editorial) | | light buchite has acicular clinoenstatite and tridymite, as well as microphenocrysts of sanidine, sekaninaite...shale starting materials sandwiched with olivine basalt. The experimental results indicated that melting...variably oxidized rock) and paralava, which have a basalt ACCEPTED MANUSCRIPT appearance with aphanitic...1994; Wood and Browne, 1996), Stromboli, Sicily, Italy (Renzulli et AC al., 2003; Salvioli-Mariani et...common minerals formed during pyrometamorphism are tridymite, fayalite, MA pyroxene, mullite, sanidine, ilmenite |  | | Book (edition) | | Sulfides with M : S > l : 1 2.C Sulfides with M : S = l : 1 2.D Sulfides with M : S = 3 : 4 and 2 : 3...3 2.E Sulfides with M : S < l : 2 2.F Sulfides of As, alkalies, with halides, oxide, hydroxide, H2O Sulfosalts...Sulfosalts 2.G Sulfosalts with M : S = l : 1 2.H Lead sulfosalts with a pronounced 2D architecture 2.J...CCM CM DANR EJM JMPS MM MP NJMA ZRMO Republic province prefecture county departement departamento ...cylindrite series). Tric\inic, PI, in two subcel\s: pseudotetragonal a,b,c = 23.4, 5.77, 5.83, a,p,y |  | | Book (volume) | | have been particularly fortunate in having Dr W. S. MacKenzie close at hand and are most grateful for...BARIUM FELSPARS.166 SILICA MINERALS.179 Quartz, Tridymite, Cristobalite . . . . .179 NEPHELINE GROUP...fast, intermediate and slow ray; also these rays s birefringence * polar coordinate: azimuth angle...nomenclatures we have been guided princip¬ ally by Dr. W. S. MacKenzie, whose assistance is gratefully acknowledged...members of the ternary system NaAlSiaOs-KAlSiaOs-CaA^S^Os. These compositions are referred to respectively |  | | Journal (article/letter/editorial) | | from Buchite Ejecta of Stromboli (Aeolian Islands, Italy) DIPARTIMENTO DI SCIENZE GEOLOGICHE, TECNOLOGIE...SCIENTIFICO, LOCALITA' CROCICCHIA, 61029 URBINO, ITALY 1 2 DIPARTIMENTO DI SCIENZE DELLA TERRA, UNIVERSITA'... PARCO AREA DELLE SCIENZE 157/A, 43100 PARMA, ITALY RECEIVED NOVEMBER 17, 2009; ACCEPTED NOVEMBER 30...rocks from Stromboli volcano (Aeolian Islands, Italy) were studied by combined polarizing microscopy...cordierite^plagioclase, mullite^plagioclase palisade and tridymite^clinopyroxene) are recognized among the buchites |  | Larsen, Esper S., Irving, John, Gonyer, F. A., Larsen, Esper S., 3rd, (1936) Petrologic results of a study of the minerals from the Tertiary volcanic rocks of the San Juan region, Colorado. American Mineralogist, 21 (11) 679-701 | Journal (article/letter/editorial) | | VOLCANIC ROCKS OF THE SAN JUAN REGION, COLORADOI Espnn S. Lansnw,Jonx Invrnc, F. A. GoNvnn,axn EspBnS. LansnN...dge, M ossachus etts. 1. GEOLOGICSETTING Bv Espnn S. LenspN This paper gives only a brief statement of...Andesite. Local domes, mostly in New Mexico. Andesite-basalt. Mostly fl ows. Rhyolite. Flows and tuffs. Los...the Director of the U. S. Geological Survey. 2 Cross, Whitman, and Larsen, E S., A brief review of the...the San Juan region of southwestern Colorado: U , S . Geol,Surtey, Bull.843, 1935. 679 THE AMERICAN |  | | Journal (article/letter/editorial) | | anal., replacement of augite by, 857 ADUSUMILLI (M. S.), KIEFT (C.), and BURKE (E. A. J.), Tantal-aeschynite...crystallizing from melted lavas at high pressures, 768; Italy, anal., hourglass zoning in, 32i; Spitzbergen, anal...astrophyllite, 97 Baryte, Masson Hill, Derbyshire, paragenesis, 8I t Basalt, Lorne Plateau, Scotland, anal...and mechanics of synthesis, 89 Bayldonite, Tsumeb, S.-W. Africa, anal., celldimensions, twinning, 716 BERNARDINI...Syhadree Mtns., India = Khandala Ghat, Poona, 658 Bien S~tr mine, Pirogues Valley, New Caledonia, chrome-picotite |  | | Journal (article/letter/editorial) | | over three-quar~rs of a mile. 4 (2) F ~ d R e / ~ n s . The principal exposures are indicated on the sketch-map...east. The largest and most important outcrop is a quarry some 250 yards north-west of Brockhill farm, on...the Pakeozoic districts of Abberley, Woolhope, May Hill, Tortworth, and Usk. Mere. Geol. Surv. Great Britain...Britain, 1848, vol. 2, part 1, pp. 155-158. s Trans. Worcestershire Nat. Club, 1874, vol. 1, pp. 211-212... . . . . . . ".. -- , ' \'~ "~K~':,". FIG. 1. S k e t c h - m a p of t h e B r o c k h i l l dike |  | | Journal (article/letter/editorial) | | form from this temperature to 1470"+ 10o C is B2-tridymite. Above this temperature B-cristobalite is stable...low temperatureforms of tridymite: a-tridymite stable below 117oand B1-tridymite stable between 1170and...and reversible. The high temperature form, pr-tridymite persistsbetween 1630and 7470"+ 10o at which temperature...e r s l o nt e m p e r a t u r e . Fenner'sthesisfor the Ph.D. degreewas on the Watchung basalt and the...the secondary minerals occurring in the Watchung basalt Fenner solved two problems,namely: (a) the early |  | | Book (edition) | | are partly based on the C:.ecl1book 'Encyclopedic S)nopsis of Minerals", published by the Academia Publishing...Cu 12[S(SbS 3).d Cu-rich freibergite (Ag,Cu) 12[S(SbS 3)4] Ag-rich tetrahedrite [Cu,Ag) 12[S(SbS3).d...in English, German, and other Gennanic lan2'Ua2:e s. French. and other Larin Ianguages. and in the- Polish...Sulfides with M : S > 1: 1 2.C Sulfides with M : S = 1: 1 2.D Sulfides with M : S = 3:4 and 2:3 2.E Sulfides...Sulfides with M : S < 1:2 2.F Sulfides of As, alkalies, with halides, oxide, hydroxide, H 2O SulfosaJts |  | | Report (volume) | | Title. IV. Series. QE75.B9 no. 2054 [QE390.5] 557.3 s---dc20 [549.9795'61] 93-12199 CIP CONTENTS Abstract................................ . Columbia River Basalt Group ................................................................ .. Still Creek and Laurel Hill Intrusions .......................................wairakite from outcrops associated with the Laurel Hill intrusion.................... Electron-microprobe...hole and outcrop samples associated with the Laurel Hill intrusion...................................... |  | | Journal (article/letter/editorial) | | recorded from the railroad tunnels through Bergen Hill, Bergen County, and similar specimens have been...Jersey City and Weehawken areas and quarries at Snake Hill, Hudson County. Exceptional analcime specimens have...single analcime crystal on serandite from the Demix quarry, Mont Saint-Hilaire, Quebec. This 3.7-cm specimen...Montclair and Verona in Essex County, the Houdaille quarry at Summit in Union County, and quarries near Millington...Gainesville diabase quarry, Prince William County, and from an unusual analcime gabbro at Spring Hill, Augusta County |  | | Journal (issue) | | FERRIERITE Ferrierite-NH4 Type locality: Libous Quarry, Chomutov District, Usti and Labern Region, Czech...N.V., Zubkova, N.V., Meisser, N., Ansermet, S., Weiss, S., Pekov, I.V., Belakovskiy, D.I., Vozchikova...(formerly cuprian Adamite) on hydrohaeterolite Gold Hill Mine, Tooele Co., Utah 5 Mineral Environments:...3). The matrix material at Obsidian Cliffs is tridymite. In the rocks at Lemolo Lake and Summit Rock,...rarities, such as cuprorivaite and volborthite. Basalt, that is common and widespread in the northwest |  | | Journal (article/letter/editorial) | | Streymoy. Parent rocks are represented by the “middle basalt” formation. Investigated opals generally show vitreous-dull...type with variable contents of cristobalite and tridymite and, in some cases, chalcedony. In order of abundance...activity that generated the North Atlantic Igneous Province, which also includes the basalts of Greenland...the North Atlantic ocean. The formation of this province is considered to be linked to the Iceland hotspot...and are divided into a lower, middle and upper basalt formation, separated by two horizons (named A and |  | | Journal (issue) | | The minerals found here are pseudobrookite, tridymite, hornblende, hypersthene, and apatite. Hypersthene... although a few crystal groups may be found. Tridymite is the most common accessory mineral present with...with hypersthene and hornblende also occurring. Tridymite is a very common mineral at Lemolo Lake, occurring...occurring as a lining in most all vugs. Tridymite is Si02 and forms pseudohexagonal orthorhombic crystals...the pseudobrookite, the tridymite is the most interesting present. After tridymite, the most common mineral |  | | Report (issue) | | For sale by the Superintendent of Documents, U. S. Government Printing Office Washington 25, D. C. ...average groundmass of andesite from Saipan, average basalt of the Izu Peninsula region of Japan, and Daly's...groundmass of andesite and dacite from Saipan, average basalt of the Izu Peninsula region of Japan, and Daly's...of Saipan, average basalt of the northern Mariana Islands, average olivine basalt of the Hawaiian Islands...Islands, and average basalt of the Izu Peninsula region of Japan._____________________________________ |
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