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| with collectors, especially in recent decades. Scotland is one of several countries rich in agates, so...called 'Scotch pebbles'. The National Museums of Scotland house the national collection of Scottish agates... was not illustrated. The National Museums of Scotland welcome the opportunity to copublish Agates with...I. Rolfe Keeper of Geology National Museums of Scotland Edinburgh Outside and inside of halved agate...agates from the British Isles, especially from Scotland which is rich in agates of unsurpassed beauty |
 | Stephenson, D., Bevins, R. E., Millward, D., Highton, A. J., Parsons, I., Stone, P., Wadsworth, W. J. (1999) Chapter 9: Late Silurian and Devonian volcanic rocks of Scotland. In Caledonian Igneous Rocks of Great Britain (Geological Conservation Review Series - Geological Conservation Review No. 17. Joint Nature Conservation Committee, Peterborough. p.479-574. | Book (chapter) |
| Late Silurian and Devonian volcanic rocks of Scotland Introduction INTRODUCTION D. Stephenson The...magmatism within the Caledonian Igneous Province of Scotland took place during the later stages of orogenesis...rocks and swarms of minor intrusions. On mainland Scotland the products of this volcanism are restricted...many of the more prominent hill ranges of lowland Scotland. The locations of all significant outcrops of...of late Caledonian volcanic rocks in Scotland are shown on Figure 9.1. The volcanic province extends south-westwards |
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| which of is The mossy or stalactitic by purple Chalcedony, On both banks zoned by layers of pale lavender...sheathing layers around pendu- generally " The Chalcedony is, for the most part, of of Jasper. usual blue-grey...Partridge." earliest investing sheath of violet Chalcedony contains suspended spheres These spheres have...Cacholong centre, a surrounding mass of radiating Chalcedony, and a A still more inexplicable structure is...enveloped in alternating layers of Cacholong and Chalcedony. Occasionally a true agate structure of the |
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| year a trading standards officer from one of the UK city councils attended one of our one day courses...2001, 27, 5, 265-274 A glass imitation of blue chalcedony Henry A. Hanni 1 , Shun Tien Wu 2 , Yuan Xingqiang...and compared to natural blue chalcedony, blue opal and stained chalcedony. The gemmological characteristics...glasses. IR spectra of the artificial glass and chalcedony are also quite different. Wollastonite was identified...Taiwan, blue chalcedony, glass imitation, wollastonite, ED-XFA Introduction B lue chalcedony is one of |
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| of the Rocks .............................. (a) Montrose to Lunan Bay. (b) Lunan Bay to the Red Head. [II...be seen. On following the coast southwards from Montrose, one meets with higher beds in the volcanic series;...of lavas 1 'On the Mineralogy of the Redhead in Angus-shire' ]~Iem. Wern. Nat. Hist. Soc. vol. ii, pt...in dealing with the coast between Lunan Bay and Montrose. II. FIELD-RELATIONS OF THE ROCKS. (a) M o n...map, Sheet 57. 2 M. F. Heddle, ' Mineralogy of Scotland' 1901, vol. i, pp. 75-76, 106, 131, & vol. ii |
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| Hydrocarbon minerals in the Midland Valley of Scotland with particular reference to the Oil-Shale Group...Hydrocarbon minerals in the Midland Valley of Scotland , with particular reference to the Oil Shale Group...extent occur in the Lower Old Red Sandston e of Angus (A rmstrong, Dono van & Pat erson , 1978). The y...1983a), and uranium 277 HYDROCARBON MINERALS IN SCOTLAND 6 5 Fi rth of Forth • Glasgow .20 50 N o...1 Kilometres 00 50 Fig. 2. Map of central Scotland, showing localities discussed in text outwith |
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| 48E and 49 of the 1:50 000 geological map of Scotland. ‘The introductory chapter outlines the physical...deposits forming BRITISH GEOLOGICAL SURVEY Scotland M. ARMSTRONG, I, B. PATERSON and M. A. E. BROWNE...BSc, University of Liverpool PhD Printed in the UK for HMSO 8/85 C20 Dd 737400 MA and 1985 MAPS...One-inch to one mile (1:63 360) and 1:50 000 (Scotland) Sheet 39W (Stirling): Sheet 39E (Alloa): ...Fife, 1977 Sheet 40 Contributors Valley of Scotland, One-inch Sheet Memoirs Geology of the Perth |
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| GRIFFITH . ( Six sheets.) 1854. Stanford's Map of Scotland. ( Six sheets.) Reynolds's Geological Atlas of..." WIGHT, ISLE OF 78 77 MINERAL LOCALITIES IN SCOTLAND ABERDEENSHIRE 81 81 . ARGYLESHIRE . ISLANDS...OF 85 85 CONTENTS . MINERAL LOCALITIES IN SCOTLAND— (continued ). PAGR CAITHNESS CLACKMANNANSHIRE...counties, like the Malvern Hills, or Cairn Gorm in Scotland, are referred to the several counties in which...10.92 21:06 : Sub -species of - Phacolite. CHALCEDONY. See Quartz. Sub -species of - Haytorite. CHALCOTRICHITE |
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| Sites of Geological interest in England, Wales and Scotland compiled by Peter R Rodgers BRITISH BROADCASTING...of the similar, but much older rocks of South Scotland. Around Britain it is always more common to find...vents on Arthur’s Seat were Southern Uplands of Scotland. Further infilled with small intrusions and with...Period, some 70 million years ago, the West of Scotland, the Hebridean Islands and Antrim were all the...neck ofa volcano 1.12 Trap topography, Central Scotland 13 In many areas the slow cooling of the thick |
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| La., Ken has a 2x4 inch specimen of yellowish chalcedony which has the appearance of a dressed turkey...Nebr., sent us a few months ago a pebble of gray chalcedony which he had found on his farm. It fl. green...following item, dated Aug. 8, 1959, was sent in by Craig Burton, Box 41, RD 2, Berkshire, N . Y. "You might... quality. Among the lot were gray to bluish chalcedony, very good gem quality red carnelian, red jasper...banded agates, whitish common opal, and small chalcedony geode whose cavity was coated with a thin layer |
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| 48E and 49 of the 1: 50 000 geological map of Scotland. The introductory chapter outlines the physical...buried valley (D 1912) BRITISH GEOLOGICAL SURVEY Scotland M. ARMSTRONG, I. B. PATERSON and M. A. E. BROWNE...British Regional Geology The Midland Valley of Scotland, 3rd Edition, 1985 One-inch Sheet Memoirs Geology...BSc, PhD University of Liverpool Printed in the UK for HMSO Dd 737400 C20 8/85 1:625 000 Geological...One-inch to one mile (1:63 360) and 1: 50 000 (Scotland) Sheet 39W (Stirling): Solid 1982; Drift 1982 |
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| the Cambro-Ordovician Skarns on Isle of Skye, Scotland Brian Jackson Location Skye is the largest of...Hebridean islands. Its location in the north-west of Scotland is both remote and isolated. The coastline is...the Palaeocene Hebridean Volcanic Province of NW Scotland. It is exposed over much of northern Skye and...and related minerals. The National Museums of Scotland have been amongst those collecting extensively...zeolites to be found in Scotland. The lavas are silica rich with quartz and chalcedony (agate) abundant in |
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| org/details/fifeangusgeology0000macg Fife and Angus Geology • Fife and Angus Geology AN EXCURSION GUIDE A. R...Kincardincshire and Angus. ill. The subdivisions of the Carboniferous strata as used in Scotland by the Institute...correlation. VI. Late Glacial Tin1e Table for Fife and Angus. VII. Section through the Mons Hill Sill, South...extending northeastwards from Perth to the coast at Montrose, and those in turn are separated from the geologically...great fracture running south-westwards nght across Scotland from Stonehaven to the Clyde at Helensburgh. Strathmore |
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| traced by their geographical England and Wales, Scotland and Ireland occurrence. detail, in separate chapters...for such diverse and fascinating minerals as chalcedony and jasper, amethyst and tourmaline. Two chapters...ENGLAND AND WALES ROUND THE BRITISH ISLES PART 2, SCOTLAND 34 ROUND THE BRITISH ISLES PART 3, IRELAND 53...solution usually assumesa massive form called chalcedony. The arrangement of the atoms in the molecule...a volcanic pipe filling on Elie Ness, in Fife, Scotland. Yet even if the rising magma fails to reach |
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| "TOlVERSITY OF CALIFORNIA THE MINERALOGY OF SCOTLAND VOL. II. Printed by Neill and Company, Limited...Pyrites. DRAWN! eV DR HCDDLE THE MINERALOGY OF SCOTLAND BY THE LATE M. FORSTER HEDDLE, M.D., F.R.S...Stereograms of Gypsum, & and c Projections, Map of Scotland, Index to the one- inch Ordnance Survey . . ... Orthoclase. J . G. GOODCHILD. THE MINERALOGY OF SCOTLAND, VOL. II. OXYGEN II. SILICATES. ANHYDKOUS...Orthoclase. in is It Not acted upon by acids. Scotland of much more frequent occurrence than may be |
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| (55) III.—Chapters on the Mineralogy of Scotland. Chapter Sixth.— " Chloritic Minerals." By Professor...P 56 PROFESSOR HEDDLE ON THE MINERALOGY OF SCOTLAND. which plug the steam-holes of amygdaloids :—the...or new. PEOFESSOE HEDDLE ON THE MINEKALOGY OF SCOTLAND. 57 remarks (' Microskopische Beschaftenheit...characteristic of diabase; and those who look in Scotland for chlorite in rocks in all other respects entitled...rocks. 58 PROFESSOR HEDDLE ON THE MINERALOGY OF SCOTLAND. The members of first are not decomposed by chlorhydric |
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| Swvey of Great Britain ReBearc:11. . ' Scotland 11\fartime Pamphlet - - • No. 13 • • LIIVlESTONESOF...the convenient description of its lirnestones Scotland l1as been divided into 8 areas, covered by bloclcs...Hills (Perth and Claclanannan), and Sidla.v, Hills (Angus). _ Intrusive rocks sills and dykes of whinstone...i11. "che Lo-1,er Old Red. Sanasto11.e, e. g. in Angus, bu,t they are not utilized . • • The Carbo11iferous...(1.:.0/13) and Cults (40/1) i11. Fife. The Long Craig Upper 1,ir11estone, lying belo·rr the No1°tl1. Greens |
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| THE CAMBRO-ORDOVICIAN DURNESS GROUP, NORTHWEST SCOTLAND H.R. YOUNG Department of Geology, Brandon University...the Cambro-Ordovician Durness Group, northwest Scotland. Sediment. Geol., 22: 287--303. Quartz nodules...Group) in a section on Balnakiel Bay, northwest Scotland. The nodules, up to 4 cm in diameter, occur in...and are composed of megaquartz and length-slow chalcedony (lutecite and quartzine). Lath-like textural...the Cambro-Ordovician Durness Group of northwest Scotland. Although the presence of chert in the Durness |
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| Mortimer House, 37-41 Mortimer Street, London W1T 3JH, UK Annals and Magazine of Natural History: Series 4...while, on the other hand~ a rod of botryoidal chalcedony (fig. 10) may represent the once homogeneous...rods have disappcared~ an irregular congeries of chalcedony spheroids . . . taking . their place. Lastl.y...the 82onges. The Carboniferous Limestone in West Scotland is divided into an upper and lower series by a...show, when undcnuded, a thickness of 40 feet (R. Craig " O n the Carboniferous Basin of Dalry," Trans. |
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| across the Inner Moray Firth Basin, northeastern Scotland. The southern exposures of the Cherty Rock near...throughout the Inner Moray Firth Basin, northeastern Scotland (Linsley er af. 1980) (see Figure I ) and is generally...Hickling (1914) compared it to the superficial chalcedony of modern semiarid areas. More recent discussions...edge of the Inner Moray Firth Basin, northeast Scotland. The location of commercial offshore wells in...Red Sandstone of the Hebridean Basin, Western Scotland (Steel 1974). In discussing the results of this |
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| MOXON 55 Common Lane, Auckley, Doncaster DN9 3HX, UK [Received 15 June 2016; Accepted 30 November 2016;...consequences for water quantification in agate and chalcedony using infrared or thermogravimetric techniques...long after their host. K E Y WO R D S : agate, chalcedony, silanol, water, relative humidity, genesis,... mogánite. Introduction AGATE and chalcedony are microcrystalline members of the quartz family of minerals...microstructure, whereas chalcedony shows a fibrous form. Agate is banded or variegated chalcedony. Although fibrosity |
 | Duarte, Lauren C., Hartmann, Leo A., Ronchi, Luiz H., Berner, Zsolt, Theye, Thomas, Massonne, Hans J. (2011) Stable isotope and mineralogical investigation of the genesis of amethyst geodes in the Los Catalanes gemological district, Uruguay, southernmost Paraná volcanic province. Mineralium Deposita, 46 (3) 239-255 doi:10.1007/s00126-010-0323-6 | Journal (article/letter/editorial) |
| the δ18O values of silica minerals in geodes (chalcedony, quartz, and amethyst) are much larger and the...zeolites) and the late filling of geodes (mostly chalcedony, quartz, and amethyst) during silica alteration...isotope-ratio massspectrometer (Optima, Micromass, UK) coupled online with a CSN element analyser at Karlsruhe...Following the deposition of celadonite, a layer of chalcedony was deposited, succeeded by colorless quartz...Table 4; Figs. 10a–l). The values obtained from chalcedony from the first sequence of filling in all Fig |
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| occurrence of riebeokite in a micro-granite from Ailsa Craig. The following year it was described in a granitite...quarter-sheet No. 25 of the Geological Survey of Scotland. The specimens were obtained from three hills...casts, which are sometimes partly filled with chalcedony. This character is, however, not very constant;...unnecessary. Between these rocks and that from Ailsa Craig described by Mr. Teall, there is a great similarity...ground-mass is almost identical with that of the Ailsa Craig rock ; the riebeckite is in ophitic patches, and |
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| structure are more varied than perhaps at any other in Scotland. Basalt as a rule does not yield many of the zeolites...country ranging from the Path of Struay to Partan Craig, had been so much more pasty than the basalt of...the appearance of the pectolite of the West of Scotland,—whether found in veins in dykes, as at Manor...extracted the half of such an agate of zoned chalcedony, which was nearly 9 inches in length by 2 in...itself, but also some 12 square inches of solid chalcedony. The fact that the intervening rents of a basaltic |
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| Colorado Plateau has been presented in a report by Craig and others (1955). Over most of the Colorado Plateau...member on the Colorado Plateau ranges, according to Craig and others ( 1955), from about 200 feet to more...and eastward from an apex in south-centr.allTtah (Craig and others, 1955). RECAPTURE SHALE MEMBER The Recapture...grayish red; it is commonly silty to slightly sandy. Craig and others (1955, p. 140) report that the Recapture...streams from a source south of Gallup, N.Mex. (Craig and others, 1955}. ~tnd BRUSHY BASIN SHALE MEMBER |
Craig, Montrose, Angus, Scotland, UK