 | | Journal (article/letter/editorial) | | and metamorphism in the Highland Border Suite, Scotland, U.K. NICHOLAS P. IKIN Formerly of Department...H-isotopic compositions between that of metamorphic antigorite (iD - -62%) and non-metamorphic lizardite 6D...lizardite-type serpentinization and higher-temperature antigorite-type serpentinization can be attributed to the...low-temperature, lizardite-type serpentinixation, whereas antigorite serpentinites from the same bodies have formed...occurs along the Highland Border Fracture Zone in Scotland, U.K. (Fig. 1). We present H- and O-isotopic data |  | Arai, Shoji, Ishimaru, Satoko, Miura, Makoto, Akizawa, Norikatsu, Mizukami, Tomoyuki (2020) Post-Serpentinization Formation of Theophrastite-Zaratite by Heazlewoodite Desulfurization: An Implication for Shallow Behavior of Sulfur in a Subduction Complex. Minerals, 10 (9) 806 doi:10.3390/min10090806 | Journal (article/letter/editorial) | | composite grain with awaruite and magnetite within an antigorite-rich part of the rock. The theophraste-zaratite...heazlewoodite, which contains or interlocks with laths of antigorite, suggesting their cogenesis. The desulfurization... the serpentinization process [15]. Shetland (Scotland) In nickel addition to theophrastite, hydroxyl...3 ] are precipitated during lowUnst, Shetland (Scotland) [18]. In addition to theophrastite, hydroxyl...ferritchromite and magnetite), titanoclinohumite, antigorite, chromian spinel (altered in part to ferritchromite |  | | Report (edition) | | GEOLOGICAL SURVEY OF GREAT BRITAIN I ' • I SCOTLAND Wartime Pamphlet No. 9 • • s . ~01..0~,c~...Price • ls. 6d. ' • FIG.I INDEX MAP OF SCOTLAND showing the one-inch sheets . 'blade) (se rpe... Figure 1 I. Introduction: by G. "\Vilson II. Scotland: by G. V. "\lfilson with contributions III. England...contaminated with such secondary minerals as antigorite, chlorite and carbonates, with perhaps relics...for oven soles, foot warmers, etc. Occurrence.In Scotland (see Section II) talcose rocks have been worked |  | | Report (issue) | | consists of fine to mediumgrained dark green antigorite-serpentine, most of which contains variable amounts...0.2 rmn. diameter, scattered through antigorite. The antigorite has the following optical properties:...Fe0.Cr 2 o 3 Fe0.Fe 2 o3 Chron1ite Magnetite Antigorite suggested:1. 6 5.3 93.1 • 100. 0 '.rhe fonnula...2 11g0. Si02) • + 2 H20 Antigorite fuses at 1,557° C. by which antigorite is converted into forsterite...coarsely granular carbonate enclosing flakes of antigorite and engulfed in a matrix of talc. Opaque grains |  | | Journal (article/letter/editorial) | | anal., opt., cell-size, 942. Angouria, Egypt, antigorite, 493. Anorthite, New Zealand, anal., opt., 375;...conditions for coexistence with hornblende, 923. Antigorite, Egypt, anal., X-ray, d.t.a., 394. Apatite, Nigeria...Augite, India, anal., opt., cell-dimensions, 417; Scotland, anal., epitaxic growth on bronzite, I I5 ; Comores...exsolution of quartz from, 815. Bit Meneiga, Egypt, antigorite, lizardite, 394. Bismuthinite, range of Sb content...mica, zo6. Epitaxic growth of augite on bronzite, Scotland, H5. Erebus, Antarctica, albite, anal., d2o i |  | | Report (issue) | | References 23 Illustrations Fig 1 Talc localities in Scotland 7 Fig 2 Distribution of talcose rocks on the...largely restricted to the Highlands and Islands of Scotland, although it also occurs in Cornwall and Anglesey...limited. Norwegian ground talc FWXO; Norwegian Talc (UK) Limited. Unst talc (Queyhouse quarry); English China...largely restricted to the Highlands and Islands of Scotland (see Fig. 1 page '7), aithough it is also found...Anglesey. Talc occurrences are widely distributed in Scotland but the most important deposits are found in the |  | Derbyshire, E.J., O'Driscoll, B., Lenaz, D., Gertisser, R., Kronz, A. (2013) Compositionally heterogeneous podiform chromitite in the Shetland Ophiolite Complex (Scotland): Implications for chromitite petrogenesis and late-stage alteration in the upper mantle portion of a supra-subduction zone ophiolite. Lithos, 162. 279-300 doi:10.1016/j.lithos.2012.11.013 | Journal (article/letter/editorial) | | chromitite in the Shetland Ophiolite Complex (Scotland): Implications for chromitite petrogenesis and...Geographical Sciences, Keele University, Keele, ST5 5BG, UK Dipartimento di Matematica e Geoscienze, Università...the ~ 492 Ma Shetland Ophiolite Complex (SOC; Scotland) contains abundant compositionally heterogeneous...serpentine (lizardite with minor chrysotile and antigorite). Magmatic sulphide (e.g., pentlandite) in dunite...structure in the Shetland Ophiolite Complex (SOC; Scotland) immediately above and below which most of the |  | | Journal (article/letter/editorial) | | STUDY OF A NE\\! VARTETY OF SERPENTINE (ORTHO-ANTIGORITE) By G. W. BRINDLEY The Pennsylvania State University...Unst, one oi the Shetland Islands to the north of Scotland. It ranges in color from a greenish yellow to...respects discussed later the material resembles the antigorite rather than the chrysotile variety of serpentine... OMg 1. - Structure of amesite and of ortho-antigorite projected on the ac plane. EVIDENCE FOR A SUPERLATTICE...(1945) in x-ray studies of single crystals of antigorite, but it does not agree satisfaetorily with the |  | | Journal (article/letter/editorial) | | miles (240 km.) north-east of the mainland of Scotland and 200 miles (320 km.) west of Bergen, Norway...peridotite is altered to antigorite-talc-magnesite rocks, dunite to antigorite-magnesite rocks, pyroxenite...pyroxenite to antigorite-tremolite-schist and Greenstone to greenschists containing such minerals as tremolite...dislocations, the ultrabasic rocks are transformed to antigorite-serpentines (Read, 1934a, 666). Thin sections...pyroxene, the antigorite-serpentines are completely recrystallised to a mesh of antigorite flakes, with |  | | Report (issue) | | (Mg; Fe2+ )3 Si2 O5 (OH)4 Antigorite c 2001 ° Mineral Data Publishing, version 1.2 Crystal Data: Monoclinic... 100.00 0.35 (1) Nikka Vord quarries, Unst, Scotland. (2) State Line pits, Rock Springs, Cecil Co....Tirol, Austria. At Glen Urquhart, Inverness-shire, Scotland. From Hsiu-Yen Hsien, Liaoning Province, China...von Knorring (1954) A new variety of antigorite (ortho-antigorite) from Unst, Shetland Islands. Amer.... K. (1979) Microstructures of chrysotile and antigorite by high-resolution electron microscopy. Can. |  | | Journal (article/letter/editorial) | | water. The antigorite in the Valmalenco is the first reported example of continental antigorite with an...predominate up to the middle of the Oberhalbstein, and antigorite is the most abundant mineral with the transition...typical metamorphic association is antigorite-olivinediopside; antigorite is the only serpentine mineral...stable isotope analysis has been reported for antigorite collected from the ocean floor, and this is a...Description. C: chrysotile; L: lizardite; A: antigorite; B: bastite; cpx: clinopyroxenc; diop : diopside; |  | Kawai, T., Windley, B.F., Shibuya, T., Omori, S., Sawaki, Y., Maruyama, S. (2008) Large P–T gap between Ballantrae blueschist/garnet pyroxenite and surrounding ophiolite, southern Scotland, UK: Diapiric exhumation of a Caledonian serpentinite mélange. Lithos, 104 (1) 337-354 doi:10.1016/j.lithos.2008.01.005 | Journal (article/letter/editorial) | | pyroxenite and surrounding ophiolite, southern Scotland, UK: Diapiric exhumation of a Caledonian serpentinite... The University of Leicester, Leicester LE1 7RH, UK Received 25 July 2007; accepted 29 January 2008 Available...Abstract The Ballantrae ophiolite in southern Scotland includes a NEE–SWW-trending serpentinite mélange...diapiric exhumation in the Caledonian orogen of SW Scotland. © 2008 Elsevier B.V. All rights reserved. Keywords:...background Fig. 1 shows a simplified geological map of Scotland and Ireland and a cross-section based on the NEC |  | | Journal (article/letter/editorial) | | :(Hall, ]92".2); Cunning~burgh, Shetland islands, Scotland (Read and Di.xofa, ]933) and the Black Lake area...529 (Frondel, 1941) and that of Cunningsburgh, Scotland, had No = 1.559 and N E = 1.543 (Read and Dixon...filtration and Cr203 remains as an insoluble residue. Antigorite and magnesio-chromite are the main associates...stichtite-dominant assemblage, containing minor amounts of antigorite and chromite by wet chemical analysis, following...at room temperature, with minor association of antigorite, magnesio-chromite and magnesite are given in |  | | Journal (article/letter/editorial) | | layer with unusual textures and structures, 465 Antigorite, in the Bergell aureole, N. Italy, 367 Antiphase...the, 617 Armenite, from the Middle Dalradian of Scotland, 135 Arsenic-silver, incompatibility in fahlore...low grade contact metamorphic decomposition of antigorite serpentine, 367 Beryl, from Southeast Ireland...Australia, 549 Coire Loch Kander, armenite at, Scotland, 135 Corlorado, metamunirite--a new anhydrous...FORSYTH, D. M., 95 FORTEV, N. J., armenite from Scotland, 135 FOXFORD, K. A., the Panasqueira W-Cu-Sn deposit |  | | Journal (issue) | | type comprises the foliated varieties, such as antigorite and marmolite. From X-ray studies G. Selfridge...serpentines into two groups, serpentine a n d antigorite, a n d he suggested the n a m e serpentinite...serpentinite for the rock-like forms of serpentine, antigorite or mixtures of both. E. Whittacker and J . Zussman...divided serpentine into three groups, lizardite, antigorite and chrysotile. Further, there is an aluminous...generally considered to be a sub-variety of the antigorite group of serpentines and an X-ray analysis of |  | | Journal (article/letter/editorial) | | Selfridge for distinguishing between chrysotile and antigorite are shown to be unreliable, but valid criteria...serpentine mineral, distinct from chrysotile and antigorite, for which the name lizardite is proposed. Four...rather than antigorite. All the serpentine minerals examined consist either of antigorite or of one or...1936) for distinguishing between chrysotile and antigorite is unreliable, but that more accurate work permits...forms of ehrysotile or lizardite rather than of antigorite. It is apparent from the powder data that all |  | | Journal (article/letter/editorial) | | curling material is disPersed. In the caseof antigorite' which has a platy morphologv, interest cen*...arA Chrysotile (clino) Chrysotile (ortho) 2 Antigorite 3 . Lizardite 6,4 J.JZ 9.2 5.32 9.2 43.5 9...tes OxforduniversityMuseum.Hard dark 8. Platy antigorite(Antigorio,Italy). fl0.16327, green platy specimen...veins are often found is often designated as antigorite. The fallacy of this is shown by r-ray powder...patterns. (Compare Fig. 36 with those of the antigorite group, Fig. 4D and d.) The pattern obtained from |  | | Catalog/List | | micro spots of melanite garnet Loch Borralan North Scotland 6x3 £8 6 BREWSTERlTE small crystals on the surface...attractive piece 6x4. Whitesmith Mine Stontian Scotland £25 7 ElJDIAL YTE rich red masses with very minor...metallic mass 4x3cm Shierglas Quarry Blair Atholl Scotland £6 37 AGRELLITE pure grey cleavage 4x3cm one edge...small rich piece of colourless bladed mass in antigorite ,(looks like selenite) about lx2 cm Pentreath...was the largest producer of manganese ore in the UK, mainly during the second world war. next seven pieces |  | | Journal (article/letter/editorial) | | valency of Ti in, 553, 554 Aegirine-augite, Assynt, Scotland, anal., 529 and M7 Afwillite, Ireland, 529 Alabandine...stability relations, 534 Anhydrite, lsrael, 233 Antigorite, Western Australia, anal., X-ray, paragenesis...guide to porphyry copper deposits, 288; Assynt, Scotland, Cl-poor, anal., 529 and M7; and see Fluorapatite...migmatites in the Huntly-Portsoy area, north-east Scotland. A reply, 295 AXON (H. J.) and NASIR (M. J.),...Paragonite in chloritoid schists from Stonehaven, Scotland, 21 I BARBER (C.), see DICKSON (J. A. D.), t45 |  | | Journal (article/letter/editorial) | | ensuing formation of "bladed m a t " texture (antigorite) may have resulted f r o m the inhomogeneous...fensterstruktur serpentine, in Glen Urquart, Invernessshire, Scotland. Only one other texture of serpentinite has received...species of serpentine (lizardite, chrysotile, and antigorite), and some efforts have been made to relate these...shown by X-ray diffraction to be composed of antigorite. Their formation seems to take place first along...principle species of serpentine (namely, lizardite, antigorite, and chrysotile) can be distinguished by X-ray |  | | Journal (article/letter/editorial) | | 136; ref 4) 7. Antigorite (picrolite), fibrous, Shipton, Quebec, (ref.3, p 136) 8. Antigorite, platy, Glen...Glen Urquhart, Scotland, (ref.3, p. 136) The absorption curves are shown in Fig. 1' In constructing this...6Jayer ortho-serpentine, fibrous, (7) antigorite, fibrous, (8) antigorite, platy. attempt has been made to...the curvesfor the other serpentines.The term ',antigorite" is used for a mineral with the structural characteristicsof...the infra-red data may serve to distinguish an antigorite from other serpentine minerals. The antigorites |  | | Journal (article/letter/editorial) | | Cornwall; 2 from Somerset; 1 from Cheshire; 2 from Scotland; and 2 from Ireland). Geographical distribution...minerals: of the 287 minerals listed, 121 are from Scotland; 116 244 H. G. M A C P H E R S O N from England...64 are from England (48 from Cornwall); 35 from Scotland; 19 from Ireland; and 7 from Wales. The remaining...Pennines and northern England, Wales, Ireland, Scotland, etc. When this has been done the way ahead will...checking references in publications unobtainable in Scotland, and for confirming the existence of certain specimens |  | | Journal (article/letter/editorial) | | abbreviations: Liz = lizardite, Tc = talc, Atg = antigorite, Br = brucite, Fo = forsterite, Mag = magnesite...metamorphism. The serpentine minerals lizardite and antigorite form from the hydration of olivine in the temperature...to antigorite + brucite (owing to the slight difference in SiO2 between lizardite and antigorite) at...The only serpentine mineral in the database is antigorite. The composition axis is logarithmic to emphasize...magnesite. Antigorite-bearing assemblages are restricted to fluid with less than 30% CO2. The antigorite field |  | | Journal (article/letter/editorial) | | foliated, rich in olivine and diopside, and poor in antigorite. The diopside has low Al, Cr and Na contents...tremolite and olivine to produce diopside and antigorite under stable conditions of olivine, at temperatures...rare types of serpentinites, such as retrograde antigorite serpentinites and serpentinite mylonites, are...composed of pseudomorphic lizardite and prograde antigorite serpentinites (Wicks & Whittaker, 1977; Escartı́n...respective diagnostic mineral assemblages of olivine + antigorite + diopside, olivine + tremolite (without talc) |  | | Journal (article/letter/editorial) | | A NEW VARIETY OF ANTIGORITE (ORTHO-ANTIGORITE) FROM UNST, SHETLAND ISLANDS G. W. Bnrwolny* ANDO. voN...petrographical data are given for specimens of antigorite from Unst, Shetland Islands. The r-ray powder...magnetite, the other with kdmmererite (Cr-chlorite). Antigorite LYo.1, is of olive-green color containing scattered...precious serpentines. Thin section examination of antigorite No. 1 revealed no significant textural features...features, the mineral being too fine-grained. Antigorite No. 2 appeared to be patchy in ordinary light. In |
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Clay Geo, Mainland, Shetland Islands, Scotland, UK