Recommendations of the International Union of Geological Sciences. In Subcommission on the Systematics of Igneous rocks. Cambridge University Press.

Vieten, K. 1980. The minerals of the volcanic rock association of the Siebengebirge. 1. Clinopyroxenes. 2. Variation of chemical composition of Ca-rich clinopyroxenes (salites) in the course of crystallization. Neues Jahrbuch für Mineralogie Abhandlungen, 140, 54-88.

Todt, W., & Lippolt, H. J. (1980). K-Ar age determinations on tertiary volcanic rocks: 5. Siebengebirge, Siebengebirge-Graben. Journal of Geophysics| IF 32.18, 48(1), 18-27.

Stindl, H., & Vieten, K. (1982). The minerals of the volcanic rock association of the Siebengebirge. II. Olivines 1. Idiocrysts and xenocrysts. Neues Jahrbuch für Mineralogie. Abhandlungen, 145(2), 183-199.

Vieten, K. (1983). Tertiary volcanism in the Siebengebirge mountains. In Plateau Uplift (pp. 131-132). Springer, Berlin, Heidelberg.

Moreva-Perekalina, T. V., & Moreva-Perekalina, T. V. (1985). Ultramafic xenoliths from alkaline basalts of Finkenberg (Siebengebirge, West Germany) (Vol. 78). Rijksmuseum van Geologie en Mineralogie. pp. 1-50.

Vieten, K., Hamm, H. M., & Grimeisen, W. (1988). Tertiärer Vulkanismus des Siebengebirges. Fortschritte Mineralogie 66. Beiheft, 2, 1-42.

Le Maitre, R. W. - Ed. (2002) Igneous Rocks - A Classification and Glossary of Terms (2nd ed.) Cambridge University Press. doi:10.1017/cbo9780511535581

Jung, S., Vieten, K., Romer, R. L., Mezger, K., Hoernes, S., & Satir, M. (2012). Petrogenesis of Tertiary alkaline magmas in the Siebengebirge, Germany. Journal of Petrology, 53(11), 2381-2409.

Kolb, M., Paulick, H., Kirchenbaur, M., & Münker, C. (2012). Petrogenesis of mafic to felsic lavas from the Oligocene Siebengebirge Volcanic Field (Germany): implications for the origin of intracontinental volcanism in Central Europe. Journal of Petrology, 53(11), 2349-2379.

Reference Search (possible matching items)

	*Kars, H. (1982) Een vijzel van Drachenfels-trachiet uit Dorestad. Grondboor & Hamer, 36 (3) 72-76*	Journal (article/letter/editorial)
	recognized. Two fragments are consisting of quartz trachyte to quart latite. This rock was quarried at...Drachenfels a volcanic mountain situated in the Siebengebirge near Königswinter, WestGermany. INLEIDING Als...recognized. Two fragments are consisting of quartz trachyte to quartz latite. This rock was quarried at the...volcanic mountain situated in the Siebengebirge near Königswinter, West-Germany" />
	Ulrych, Jaromír, Krmíček, Lukáš, Tomek, Čestmír, Lloyd, Felicity E., Ladenberger, Anna, Ackerman, Lukáš, Balogh, Kadosa (2016) Petrogenesis of Miocene alkaline volcanic suites from western Bohemia: whole rock geochemistry and Sr–Nd–Pb isotopic signatures. Geochemistry, 76 (1) 77-93 doi:10.1016/j.chemer.2015.11.003	Journal (article/letter/editorial)
	basalt–trachybasalt-(basaltic) trachyandesite–trachyte–rhyolite (13.5 to 10.2 Ma) and (ii) silicaundersaturated...basalt–trachybasalt-(basaltic) trachyandesite–trachyte–rhyolite suite suggests the presence of an as...der Erde xxx (2015) xxx–xxx 2 France through Germany to the Czech Republic and Poland (Wilson and Downes...suite comprised of trachybasalt–trachyandesite–trachyte–rhyolite, also termed the weakly alkaline series...contrasting volcanic series have been reported from Siebengebirge (Wimmenauer, 1974; Vieten et al., 1988; Kolb
	*Tyrrell, G. W. (1926) XIX.—The Petrography of Jan Mayen. Transactions of the Royal Society of Edinburgh, 54 (3). 747-765 doi:10.1017/s0080456800016161*	Journal (article/letter/editorial)
	olivine basalts, with one example of segirine-trachyte.* Four analyses were given, but theirquality is...described according to the following scheme :— 1. Trachyte. 2. Trachyandesite. 3. Trachybasalt. a. Saule...agglomerate and conglomerate of Egg Bluff.* 1. Trachyte. The rock which has been taken as the type of...pyroxene. There is a very small amount of visible quartz, and the rest of the 9 per cent, of free silica...mossy aggregates, and there is a larger quantity of quartz visible in the groundmass than in the type rock
	*Eleftheriadis, G. E. (1988) Zoned clinopyroxenes from the volcanic rocks of almopia (Voras Mts), Central Macedonia, Greece. Mineralogy and Petrology, 38 (2) 117-126 doi:10.1007/bf01164316*	Journal (article/letter/editorial)
	Almopia range from trachytes and quartz-trachytes through latites and quartz-latites to andesites. According...Pefka (MP) and Kamila (KM), classified as quartz-trachyte, latite and andesite, respectively, have similar...(An30-Ans0) are not rimmed by sanidine. In the quartz-latite of Gologereo (GOL), hornblende and biotite...composition: © trachyte (PET, PV), • quartz-trachyte (SAM), [] latite (MP), [] quartz-latite (GOL), •...during the fractionation in the trachytes and quartz-trachyte, whereas it remains almost constant in the
	*Washington, Henry S. (1897) Italian Petrological Sketches. V. Summary and Conclusion. The Journal of Geology, 5 (4) 349-377 doi:10.1086/607816*	Journal (article/letter/editorial)
	over 65 per cent. of silica with or without free quartz; while those of Radicofani, and probably also those...Ricciardi's two analyses of "olivine-bearing andesitic trachyte," Nos. 3 and 4, are quite typical, though the...orthoclase, plagioclase, augite, a little biotite and quartz, and quite abundant, generally serpentinized, olivines...mineralogical and chemical grounds, the well-known "trachyte" of L'Arso on Ischia. This has long been known...instance of the exceptional occurrence of olivine in trachyte, and has been taken by Rosenbusch' as the type
	*Hull, Edward (1892) Volcanoes: Past and Present. Walter Scott, Ltd, London.*	Book
	canoes o f the Basin o f N enw ied on the Low er Rhine (1832). Dr. Hibbcrl’s work is one of remarkable...the volcanic phenomena of the Eifcl and the Lower Rhine, but it anticipates the principles upon which modern...and in working out the physical history of the Rhine valley below Mainz, and its connection with the...associated rocks over the region extending from the north of Ireland to the Inner Hebrides; and in dealing...that of Schchallion in Scotland, also composed of quartz-rock; and others may be found amongst the ranges
	*Phillips, John, Seeley, H. G. (1885) Manual of Geology - Theoretical and Practical* Vol. 1 - Physical Geology and Palæontology. Charles Griffin and Co., London.**	Book (volume)
	of crystalline rocks, &e. 3ae Quartz-bearing plagioclase rocks . Quartz-orthoclase rocks 36) . Cuapter...illore e LOy] - 108 LOO 2) CLIO aig 5 + ITO North and West Britain . . I19\| Sand-dunes . : 5 Mid Britain...Propylite . . é . Quartz propylite . : c . Andesites . C S 3 . Dacite . c a c : . Trachyte CONTENTS. 252]... - 356] Gneiss . : 357 \| Mica schist . é 4 Quartz rock . 5 - 361 \| Crystalline limestone XXJ...Along the Grampians In the North-Western Scenery of gneiss and Scenery of quartz rock : > 343 345 ‘
	Washington, H.S. (1903) Chemical analyses of igneous rocks published from 1884 to 1900, with a critical discussion of the character and use of analyses. Professional Paper 14. US Geological Survey doi:10.3133/pp14	Report (issue)
	so low in alkalies that 10 or more per cent .of quartz must be present, even though in the calculation...composition, for the more brittle minerals, as quartz and the feldspars, will be first reduced to powder...ia that in S. Zaleski's study of the amount of quartz in granites (Tschermak's Mineral. Mittheil., Vol...granites is notably richer m feldspar relatively to quartz and-dark minerals than the coarser portion of the...sodium-acetate method in separating MnO is that of the quartz-syenite of Fourche Mountain, iu Arkansas. a One
	*Le Maitre, R. W. - Ed.* (2002) Igneous Rocks - A Classification and Glossary of Terms (2nd ed.) Cambridge University Press. doi:10.1017/cbo9780511535581**	Book
	granites; the most frequent granites were named quartz-monzonite in America and adamellite in England...demand that quartz-monzonite in relation to monzonite must have the same status as quartz-syenite to syenite...syenite and quartz-diorite to diorite. On this critical point, Paul Bateman made an inquiry concerning...respondents declared themselves willing to accept quartz-monzonite as a term for field 8, i.e. for a straight...which volume modal data must be determined: Q = quartz*, tridymite, cristobalite A = alkali feldspar, including
	*Prior, G. T. (1903) Contributions to the Petrology of British East Africa. Mineralogical Magazine and Journal of the Mineralogical Society, 13 (61) 228-263 doi:10.1180/minmag.1903.13.61.05*	Journal (article/letter/editorial)
	consist mainly of an aggregate of microcline and quartz with very little ferromagnesian mineral, and show...hypersthene-granulite consisting of a granulitic aggregate of quartz and oligoclase, with strings of pleochroic (colourless...red rutile in large amount are included in both quartz and kyanite. At Lugard Falls, on the Sabaki River...structure, and the garnet contains inclusions of the quartz-felspar-groundmass and also of the green hornblende...Cape system, with the auriferous Witwatersrand quartz-conglomerate immediately above it. The Swaziland
	Civetta, L., D'Antonio, M., Orsi, G., Tilton, G. R. (1998) The Geochemistry of Volcanic Rocks from Pantelleria Island, Sicily Channel: Petrogenesis and Characteristics of the Mantle Source Region. Journal of Petrology, 39 (8) 1453-1491 doi:10.1093/petroj/39.8.1453	Journal (article/letter/editorial)
	compositions ranging from comenditic trachyte to comendite and pantelleritic trachyte to pantellerite, with progressively...Africa; East Greenland; British Columbia in North America; China–North Korea in Asia; Pantelleria island in...Australia, the Basin and Range Province in western North America, Volcàn Las Navajas in Mexico, and SW Sardinia...pantellerite, through pantelleritic trachyte and comenditic trachyte, to mildly alkali basalt, in order...the base upwards from pantellerite to comenditic trachyte (Civetta et al., 1984). All the other silicic
	*Shand, S. J. (1951) The Study of Rocks* (3rd ed.) Thomas Murby & Co, London.**	Book (edition)
	possible proportions of orthoclase, albite, anorthite, quartz and other simple molecules which the rock may contain...up by the magma, or· secondary minerals such as quartz and calcite which were introduced into gas-vesicles...relatively few points, from which delicate fibres of quartz and feldspar grow out in all directions, producing...grains towards the base, and with feldspar and quartz towards the top, apparently in consequence of the...sometimes crossed by '' ladder veins '' of white quartz; and basic sills may show transverse dykel~ts of
	*Gupta, Alok K., Yagi, Kenzo (1980) Petrology and Genesis of Leucite-Bearing Rocks* - Minerals and Rocks No. 14. Springer Berlin Heidelberg. doi:10.1007/978-3-642-67550-8**	Book
	restricted as compared with the olivine-basalt trachyte kindred, but it is distributed at widely scattered...Rocks of the Laacher See and Other Areas of West Germany ............... 5.13 Leucite-Bearing Rocks of the...197 17.2 Tectonics in the East Eifel Area ofW. Germany ... 198 17.3 Plate Tectonic Model for the Generation...Analcite Kalsilite Albite Anorthite Plagioclase Quartz Tridymite Orthoclase Potash feldspar Diopside Clinopyroxene...series and alkali basalt (Si0 2 -undersaturated), trachyte series. In orogenic belts there is another volcanic
	*Middlemost, Eric A. K. (1985) Magmas and magmatic rocks* - An introduction to igneous petrology. Longman.**	Book
	Geochemistry and normative composition Basalt-trachyte rock 74 as 7.6 dal 7.8 Wo 7.10 Chapter 8 8.1...10:2 10.3 10.4 10.5 10.6 10.7 Chapter vi The trachyte-syenite clan 11 List 11-2 compositions associations...substantiated the concept that drift had occurred between North America and Europe. Harry Hammond Hess introduced...partially molten materials. Seismic studies in north-east Iceland have, for example, the indicated...within the mantle be- neath oceans such as the North Atlantic. It is anticipated that the materials participating
	*Kemp, James Furman (1911) A Handbook of Rocks* (5th ed.) D. Van Nostrand Co., New York.**	Book (edition)
	Mineralogie, Geologic und Palaeontologie, Stuttgart, Germany. Quar. Jour. Geol. Soc., or Q. J. G. Geological...geologischen Geseli- Germany. Zestschrift ftir Krystallographie, Munich, Germany. TABLE OF CONTENTS...The Igneous Rocks, continued. 25 The Dacite- Quartz-Diorite Series and the Andesite-Diorite Series...ice, calcite, serpentine, cemented fragments of quartz, kaolin and a few others are in sufficient quantity...important rock makers. The oxides and opal, include quartz and related minerals chalcedony magnetite and
	Washington, H.S. (1917) Chemical analyses of igneous rocks published from 1884 to 1913, inclusive, with a critical discussion of the character and use of analyses. Professional Paper 99. US Geological Survey doi:10.3133/pp99	Report (issue)
	deter- collection · of descriptions and analyses of North mine 1nost of the 1ninor constituents. An1erican...the specimen so low that 10 or more per cent of quartz must be analyzed is representative of the rock...them may be mentioned the analyses of the Butte quartz monzonite, (No. 5, I. 4. 3. 3 and Nos. 6, 7, 8...composition for the more brittle minerals, such as quartz and the feldspars, will be reduced to powder first...oxide. that In S. Ztlloski's study of the amount of quartz in granites (Tschermak's MineraL 11fltthcll., vol
	*Shand, S. James (1947) Eruptive Rocks* (3rd ed.) Thomas Murby & Co. , London.**	Book (edition)
	Fluid enclosures in crystals Peg'matites and quartz veins The temperature of The temperature of Tabular...PRESSURE The pressure upon the Hig-h and low quartz IN THE MAGMA mag-ma •• Tridymite Calcite and...AND GENESIS Definition Syenite and shonkinite Trachyte Monzonite and diorite Andesite Gabbro, anorthosite...SATURATED (aND SLIGHTLY OVERSATURATED) ROCKS Trachyte 389 390 392 396 E. Shonkinite and monzonite...Classification and nomenclature Sub-syenite Sub-trachyte Sub-shonkinite, sub-monzonite Sub-diorite, sub-anorthosite
	*Dana, James D. (1887) Manual of Mineralogy and Petrography* (4th ed.) John Wiley & Sons, New York.**	Book (edition)
	SILICA III. l. AND SILICATES. SILICA. 253 Quartz Opal 259 2. SILICATES. General Remarks.- 262...sometimes called a quartzoid, because it occurs in quartz. (3) Twelve-sided double pyramids. Two planes of...rhombohedrons. They are combined in Figs. 20, 21, forms of quartz. Ehombohedrons vary greatly in the length of the...hemihedrism and common in crystals of tetarto- quartz, and when existing, the crystals are said to... CRYSTALLOGRAPHY. 56 Some examples are given under quartz. Some systems. rhombohedral species, as dolomite
	*Shand, S. James (1943) Eruptive Rocks* (2nd ed.) Thomas Murby & Co. , London.**	Book (edition)
	.. Fluid enclosures in crystals Pegmatites and quartz veins ... The temperature of crystallization The...the magma The geological thermometer High and low quartz Tridymite ... Calcite and wollastonite Action of...265 266 Definition ·... Syenite and shonkinite Trachyte Monzonite and diorite An...rocks Classification and nomenclature Syenite Trachyte Shonkinite and monzonite Diorite and anorthosite...Classification and nomenclature Sub-syenite Sub-trachyte Sub-shonkinite, sub-monzonite Sub-diorite, sub-anorthosite
	*Bauer, Max (1904) Precious Stones* Vol. 2. Charles Griffin & Co Ltd, London.**	Book (volume)
	Brooks. (22245-4) $5.00 Gems and Precious Stones of North America, George F. Kunz. (21855-4) $6.00 The Curious....... 3. South Africa 4. Borneo 5. Australia 0. North America 7. British Guiana 8. Urals .... 9. Lapland...Jadeite (Chloromelanite) Quartz . A. Crystallised Quartz . Rock-crystal .... Smoky-quartz .... Amethyst ........ Citrine ..... Rose-quartz .... Prase .... Sapphire-quartz Quartz with enclosures . . . . 420 420...Cat’s-eye . . . . Tiger-eye. . . 491 493 B. Compact Quartz Hornstone .... Wood-stone .... Chrysoprase ...
	*Geikie, James (1886) Outlines of Geology. Edward Stanford, London.*	Book
	again a few stones. It has been observed that the quartz-grains in the blowing sands of deserts are often...been recognised in the south of France and the north of Italy. According to Baron Richthofen a yellowish...fulgurites. The summit, composed of a reddish white trachyte (a volcanic rock), is completely riddled with...some places as a hundred yards. In temperate and north temperate regions such great depths of decomposed...compacted volcanic sand, containing blocks of trachyte (a volcanic rock). r' 18 i OUTLINES OF GEOLOGY
	*Williams, Howel, Turner, Francis J., Gilbert, Charles M. (1954) Petrography* - An Introduction to the Study of Rocks in Thin Sections. W. H. Freeman and Company, San Francisco, CA.**	Book
	processes has given rise to alkaline lavas such as trachyte and phonolite, and the other a subsialic (tholeiitic)...and labradorite are typical associates; so are quartz and fayalite; so are orthoclase and oligoclase...Hornblende \ Oligoclase . Biotite \ Albite Quartz Potash feldspar I Zeolite <- .i Water-rich solutions...go together, so that mica, alkali feldspars, and quartz are closely associated in such rocks as granite...certain minerals tend to be antipathetic; thus quartz and bytownite, and orthoclase and labradorite,
	*Shand, S. James (1950) Eruptive Rocks* (4th ed.) Thomas Murby & Co. , London.**	Book (edition)
	water Fluid enclosures in crystals Pegmatites and quartz veins The temperature of crystallization The temperature...AND OBNSSIS Definition Syenite and shonkioite Trachyte Monzoniie and diorite Andesite Gabbro, anorthosite...rocks Classtficstkin and nomenclature Syenite Trachyte Sbonidnite and moozontte Diorite and anorthosite...plex, New York Sute Ui Vb. Similar to Va. 118 VI. Trachyte plugs (light coloured) in olivioe-hasatt, St,... Helena 272 VII. “Lot", St. Helena—a trachyte plug poshed up through olivine-basalts. In the distance
	*(1995) The Minerals and Gemstones Collection [Collated] : Minerals. Treasures of the Earth. Orbis Publishing Ltd.*	Journal (issue)
	mechanisms of many watches contain diamonds, rubies or quartz. Th ese gemstones are very hard and wear down much...many uses. The laser in the photograph is checking quartz windows to ensure that they are flawless. Left:...the rock at Taxco silver mine in Mexico. Right: North Sea drilling rig 'Claymore-A' in full production...England. The British coast is worked extensively for quartz grains, which are used in glassmaking, and for...plutonium and uranium. The Minas Gerais region north of Rio de Janeiro has mines that contain amethysts
	*Hatch, F. H., Wells, A. K., Wells, M. K. (1961) Text-Book of Petrology* - Petrology of the Igneous Rocks Vol. 1. Thomas Murby & Co.**	Book (edition)
	lGNEO US ROCKS Page II ROCKS CONTAINING ESSENTIAL QUARTZ: THE "ACID" IGNEOUS ROCKS 188 Granites, Adamellites...41. Quartz crystals, simple and twinned 42. Fluid-filled cavities with gas bubbles, in vein quartz 43...equilibrium diagrams relating to the occurrence of quartz, the alkali-feldspars and feldspathoids. (Fig....Riebeckite-microgranite, Mynydd Mawr, Carnarvonshire, North Wales 85. Devitrified porphyritic pitchstone, Petit...Spherulitic riebeckite-rhyolite, near Ayaka Leru, North Nigeria 87. Some types of crystallites 88. Porphyritic

Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2024, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: May 9, 2024 13:38:03

Go to top of page

Quartz-trachyte from Siebengebirge, Cologne, North Rhine-Westphalia, Germany

Quartz-trachyte from
Siebengebirge, Cologne, North Rhine-Westphalia, Germany