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| Journal oF The Russell Society Volume 18, 2015 www.russellsoc.org Journal of the Russell Society...PaPerS an introduction to supergene mineral formation in an oxidising lead-, copper- and zinc-bearing ore...Trevor F. Bridges 5–16 mineral deposition in a cavity in Smallcleugh mine, Nenthead, Cumbria Trevor...Trevor F. Bridges and Roy Starkey 17–24 the history and occurrence of ‘buxton diamonds’ Roy Starkey and John...John Faithfull 24–45 Note amethyst from Screel Hill, Castle douglas, dumfries and Galloway, Scotland |
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| 483 The chemistry and mineralogy of the olivine nodules of Calton Hill, Derbyshire. By S. EL D. HAMAD...chromian spinel from olivine nodules from the Carboniferous basalt of Calton Hill, Derbyshire. Chemical...analyses of the nodules and of their host rock are also presented. The distribution of Mg and Fe in the coexisting...differs slightly in that the extension of the pyroxene tie-line intersects the Ca-Mg side of the C~-Mg-Fe triangle...triangle. The clinopyroxene is a normal augite rather than the hydrous augite previously reported (Tomkeieff |
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| Springer-Verlag 1978 Petrology of the Uppermost Upper Mantle Deduced From Spinel-Lherzolite and Harzburgite...Harzburgite Nodules at Calton Hill, Derbyshire Colin H. Donaldson Department of Geology, University of Manchester...porphyroclas- tic-textured spinel lherzolites and harzburgites from the Lower Carboniferous ankaramite...ankaramite vent at Calton Hill has been investigated for trends of modal variation and mineral composition and...and for variation in calculated bulk composition. The results indicate that the nodules are accidental |
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| gyrolite, 173, 187 British Isles ENGLAl~D SW. England: coffinite, lxi Sykes, Bowland Forest High, Yorkshire:...Bray, Altarnun: uraninite, xc Wheal Owles, St. Just-in-Roseland: uraninite, 1081 Bj61fur, Seydisfj6rdur;...Seatoller Fell; Steel Fell; and Stonethwaite (all in Borrowdale): epidote, gyrolite, gismondine, and...114 Sorfinnset, Glomfjord: chondrodite, humite, spinel, 1066 S w e d e n (Sverige) Aln5 island: kaersutite...pyromorphite, 722 Derbyshire Calton Hill: olivine, ortho- and clinopyroxene, spinel, 483 Golconda mine |
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| JOURNAL OF THE RUSSELL SOCIETY The journal of British Isles topographical mineralogy EDITOR: George...Australia B. Young, Newcastle, U.K. Aims and Scope: The Journal publishes refereed articles by both amateur...relating to the British Isles. Contributions are welcome from both members and non-members of the Russell...be found at the back of this issue, or obtained from the editor. Subscription rates: The Journal is free...free to members of the Russell Society. Subscription rate for non-members is £15 for two issues. Enquiries |
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| 1975 An Experimental Study of Spinel Clinopyroxenite Xenoliths from the Duncansby Ness Vent, Caithness...coarse-grained spinel-clinopyroxenite up to 15 cm in size occur in tuff in an isolated Permian vent on the Caithness...fragments of chrome-spinel lherzolite and wehrlite are also found in the tuff and in a body of monchiquite...monchiquite within the vent. Abstract. The spinel-clinopyroxenites consist of aluminous augite and aluminous...pleonaste spinel (FeO/MgO = 0.9) and their texture suggests the spinel to have exsolved from the augite |
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| journal homepage: www.elsevier.com/locate/lithos The lithosphere–asthenosphere system beneath Ireland...UCM), ES-28040 Madrid, Spain ARC Key Centre for the Geochemical Evolution and Metallogeny of Continents...a c t The lithosphere–asthenosphere boundary (LAB) depth represents a fundamental parameter in any quantitative...large extent the temperature distribution within the crust and the uppermost mantle. The tectonic history...Paleozoic closure of the Iapetus Ocean across the Iapetus Suture Zone (ISZ), and in northeastern Ireland |
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| 1984 The reversed alumina contents of orthopyroxene in equilibrium with spinel and forsterite in the system...Al203--SiO 2 T. Gasparik and R.C. Newton Department of the Geophysical Sciences, University of Chicago, Chicago...contents of orthopyroxene coexisting with spinel and forsterite in the system M g O - A 1 2 0 3 - S i O 2 have...different P - T conditions, in the range 1,030-1,600~ C and 10-28kbar. The present data and three reversals...components MgzSi206 (En) and MgAlzSiO 6 (MgTs), to yield the following equilibrium condition (J, bar, K): ject |
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| THE AMERICAN LIQUID MINERALOGIST, VOL 50, OCTOBER, 1S65 CO, INCLUSIONS IN OLIVINE-BEARING NODULES...basaitic), r'ere Iound in the minerals of every occurrence of olivine-bearing nodules in basalts studied, from...from 72 localities throughout the worid. They were found in olivine, clinopyroxene, orthopyroxene, and...numbers of these inclusions are secondary in origin, trapped during the healing of fractures, but many are found...types require the existence of immiscible giobules of a dense, supercritical COz fluid in the basaltic liquid |
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| are review,cal.Spinelgarnet stability relationships in these nodules are discussed and ar¢~shown to be controlled...chemical as well as physical (P/T) considerations. On the basis of a survey of spine~ compositions it is proposed...Al-spincl Iherzolitcs (spinel 100 Cr/(Cr+AI)<25], Cr-spinel lherzolites [spinel 100 Cr/(Cr+Al) 25-65]...25-65] and chromite lberzoliges [spinel 100 Cr/(Cr+AI)>65]. All lherzolite nodules yield sub-solidus P/T equilibration...during the volatile c~aeged eruptions Depths of derivation increase from <60 kms for most nodules in alkali |
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| Ross ABSTRACT The remarkable xenolithic dyke described in this paper is one of the little-known swarm...dykes of probable Permian age in the Northern Highlands of Scotland. It is the first intrusion containing...xenoliths of ultrabasic rock to be recorded fnJm the Glenfinnan area, although such xenoliths have been...known(Permian age in Caithness in the extreme north of Scotland, and in Ayrshire and elsewhere in the south of...xenolithic dyke is seen in a deep gully high up in the corrie on the south side of the peaks Streap (2,988 |
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| GEMSTON. = = O {the Br itish Isles VAL AXEL FIRSOFF Gemstones of the British Isles is the ideal book for...for the avid rock-hound to keep in his car or knapsack, next to his geological hammer, ready to identify...le Street. It is the first comprehensive guide to the location of gemstones in the United Kingdom and...hundred years. Based on many years’ personal experience in gemhunting and on a large number of references from...Firsoff has compiled an invaluable reference book for the ‘rock-hound’. A short introduction contains hints |
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| Rogers /JaHEF'' ■■T'-' vW v ■' INTRODUCTION In the summer of 1971 GEMS Magazine published an issue...issue devoted mainly to mineral and gemstone sites in the British Isles. Owing to popular demand, this rapidly...demand for it. We have therefore decided to reprint the relevant parts and, while we are about it, to include...material from other issues which will be of value to the collector. There has been an opportunity to correct...already appeared in the magazine. A word about the purpose and also the arrangement of the book may not come |
 | | Catalog/List |
| Catalosue The BMS N ational Reference Collection has r eached th e 2000 miles ton e somewhat in adnnce of...of the Gregorian Calendar. This catalogue has been published to mark this achievement bu t. more Importantly...encour.age members to use th e collection . The success of the collection to date is t estament to Roy Starkey...suggested starting it in an article in newsletter No. 12 (November 1 98◄ ) to all the BMS members who have... Th e Society acknowledges and thanks them all . In his articl e Roy published a list of 100 speetcs |
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| 93:207-214 9 Springer-Verlag1986 Constraints on the origin of mafic alkaline voleanies and included xenoliths...limited range in (metamorphic) textures and modal mineralogy, there is significant variation in mineral chemistry...chemistry. Mineral thermometric data applied to the geotherm of O'Reilly and Griffin (1985) suggests equilibration...compositional variations exist over a small depth interval in the subcontinental mantle. Basaltic host rocks show...have been used to constrain the modal amounts of clinopyroxene and garnet in a presumed garnet peridotite |
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| Springer-Verlag 1986 Petrology of spinel harzburgite xenoliths from the Kishb Plateau, Saudi Arabia Lung-Chuan...Abstract. Two spinel harzburgite xenoliths from a Pleisto- cene alkali basalt unit erupted at the northwestern...northwestern corner of the Tertiary Kishb Plateau (Saudi Arabia) are characterized by an incipient transition...pyroxene occur in all the enstatite porphyroblasts. Olivine neoblasts are, in many cases, in contact with...with one another, with the triple grain junctions rarely approaching 120 ~. Chemical zoning is undetectable |
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| BINNS ABSTRACT Basic and ultrabasic xenoliths found in Tertiary basaltic and lamprophyric volcanic rocks...pyroxenites and gabbros also occur. The xenoliths are unstable in their host rocks and show marked marginal...xenoliths has been observed in 40 per cent of other basaltic rocks in the New South Wales Tertiary volcanic...available in the literature favours the hypothesis that such xenoliths represent portions of the earth's...earth's mantle incorporated in magmas originating from within that zone. Analyses of xenoliths and host rocks |
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| 1975 I Now that Spring g I yourself a new out The Mark II Wessex ATC MULTIDRIVE Tnmhlinff Tumbling...Grind—MEDIUM SPEED THE SAME TIME—WITH ONLY ONE MOTOR. Polish—SLOWLY ALL AT REMEMBER THE MORE ADD-A- BARREL...BARREL UNITS YOU USE THE CHEAPER YOUR SYSTEM BECOMES! If in difficulty write for the name and address of...Manufacturers and Wholesalers of Everything for the Lapidarist WHEN REPLYING TO A U V t H T I S E...305 308 310 316 318 GEMCRAFT WORLD DAVID THOMAS, THE GOLDSMITH UKRAINIAN PAINTED EGGS — PYSANKA FLUORESCENT |
 | | Journal (article/letter/editorial) |
| (1979) 9 by Springer-Verlag 1979 Spinel-Olivine Geothermometry in Peridotites From Ultramafie Complexes...France Abstract. An empirical calibration of the spinel-olivine geothermometer (Evans and Frost, 1975)...parageneses of lherzolitic rocks. In ultramafic complexes, most of the derived temperature estimates range...A comparison of the different thermometric data in two well studied occurrences, the Ronda ultramafic...ultramafic complex and the San Carlos xenolith field, suggests that differential rates of diffusion and recrystalization |
 | | Journal (article/letter/editorial) |
| 137 © by Springer-Verlag 1988 Spinel-Lherzolite Xenoliths from the Aritain Volcano, NE-Jordan S. Nasir...Summary Fresh spinel-lherzolite xenoliths occur within the pyroclastic components of the Aritain volcano...volcano, NE-Jordan. The average modal composition of the xenoliths is 67vo1.% olivine, 23vo1.% orthopyroxene...orthopyroxene, 9vo1.% clinopyroxene and 1.6vo1.% spinel. All xenoliths exhibit a protogranular texture. Selected...probe analyses of enstatite, diopside, olivine, and spinel are given. Temperatures of their last equilibration |
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| A L T E R A T I O N OF C H R O M E SPI.~IEL IN A DUNITE NODULE FROM LANZAROTE, CANARY I S L A N D S THOMAS...chrome spinel in a :lunite nodule from Lar~zarote, Canary Islands. Lithos 4, 83-91. Chrome spinel coexisting...coexisting with fresh olivine in a duni:e nodule from tuff shows partial to complete alteration to an opaque...variety of chz-omize. The spinel has the composition (Fe].4Mg0.6) (Feo.lCro.sAl 1.t)zO4; the chromite is variable:...late-magmatic process prior to erapti¢,~J. Chrome spinel should always be carefully examined optically before |
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| received. Numerous testimonials as to quality on display in our shop. STILL ONLY £2.60 including p. & p. For...designed by one of the Continent's leading craftsmen. Super designs. We have the largest selection ol...ol rough gemstone in the U.K. Why not pay us a visit and see for yourself. Shop open daily, including...76525 GEMS Still a few places left for GEMS' The British Lapidary Magazine AMBER HUNTING EXPEDITION...Editorial and advertisement offices: 29 Ludgate Hill, London EC4M 7BQ Telephone 01-248 3430 17p per |
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| The Olivine-Orthopyroxene-Spinel Oxygen Geobarometer, the Nickel Precipitation Curve, and the Oxygen...Oxygen Fugacity of the Earth's Upper Mantle by H.St.C. O'NEILL 1 * AND V. J. WALL2 Research School of Earth...ABSTRACT The common upper mantle assemblage olivine-orthopyroxene-spinel may be used to calculate the oxygen...equilibrated. The equilibrium has been calibrated using the large amount of existing data on the thermodynamic...phase in this assemblage. A by-product of this procedure is a new calibration of the olivine-spinel Mg-Fe2 |
 | | Report (chapter) |
| June 16, 2015 Carboniferous and Permian magmatism in Scotland B. G. J. U P T O N 1, D. S T E P H E N S...of Edinburgh, West Mains Road, Edinburgh EH9 3JW, UK (e-mail." bupton@glg.ed.ac.uk) 2British Geological...EH9 3LA UK 3British Geological Survey, Maclean Building, Wallingford, Oxfordshire OXIO 8BB, UK Abstract:...Abstract: Extensional tectonics to the north of the Variscan Front during the Early Carboniferous generated...fault-controlled basins across the British Isles, with accompanying basaltic magmatism. In Scotland Dinantian magmatism |
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| TITLES CLASSIC OF RELATED GEOLOGY INTEREST IN EUROPE SERIES l. Italian mlcanoes Chris Kilburn...)' Islands Juan Carlos Carracedo & Simon Day 5. The north of Ireland Paul Lyle 6. Leinster Chris Stillman...Costas Xenophontos 8. The Nortlrn·est Highlands of Scotland Con Gillen 9. The Inner Hebrides of Scotland...Scotland Con Gillen 11. The Gulf of Corinth Mike Leeder. Julian Andrews. Richard Collier. Rob Gawthorpe....A1ow11Pelee and the desrruction ~ 5 im-Pierre. Jfartinique Al\\yn Scarth Monitoring the Earth: physical |
