 | | Report (issue) | | 12 26.81 45.93 Total 99.5 100.00 • (1) Scawt Hill, Ireland. (2) Ca6 Al2 (SO4 )3 (OH)12 26H2 O. Mineral...Association: Portlandite, afwillite, hydrocalumite (Scawt Hill, Ireland); afwillite, hydrocalumite, mayenite... Puy-de-Dôme, France. From Scawt Hill, near Larne, Co. Antrim, Ireland. In the Hatrurim Formation, Israel...Crestmore quarry, Riverside Co., California; in the Lucky Cuss mine, Tombstone, Cochise Co., Arizona. Name: For |  | | Report (issue) | | c = 16.271–16.292 X-ray Powder Pattern: Scawt Hill, Ireland. 7.92 (vvs), 3.99 (vs), 2.87 (s), 2.46 (s)...8 34.1 1.0 Total 98.4 100.6 99.3 (1–2) Scawt Hill, Ireland. (3) Boisséjour, France; corresponding to...limestone or in xenoliths in lava. Association: Afwillite, portlandite, ettringite, larnite, plombièrite... calcite. Distribution: At Scawt Hill, near Larne, Co. Antrim, Ireland. From Boisséjour, near Ceyrat...Mergoil (1963) Découverte d’hydrocalumite et afwillite associées à l’ettringite dan les porcélanites |  | | Report (issue) | | larnite-spurrite contact metamorphic rocks (Scawt Hill, Ireland); in fumaroles (Vesuvius, Italy); as a precipitate...Jordan). Association: Afwillite, calcite, larnite, spurrite (Scawt Hill, Ireland); calcite, halite (Jebel...district, Germany). Distribution: From Scawt Hill, Larne, Co. Antrim, Ireland. On Vesuvius, Campania, Italy....the Maqarin area, north Jordan. From Jebel Awq, Northern Oman Mountains, Oman. Large crystals and masses |  | | Report (issue) | | Ca3 (SiO3 OH)2 ² 2H2 O Afwillite c 2001 ° Mineral Data Publishing, version 1.2 Crystal Data: Monoclinic...Province, South Africa. In Ireland, at Scawt Hill, near Larne, Co. Antrim. From the Schellkopf, near...Ayalon, Israel. In the USA, at Crestmore, Riverside Co., California. In the Mihara mine and at Fuka, near...References: (1) Parry, J. and F.E. Wright (1925) Afwillite, a new hydrous calcium silicate, from Dutoitspan...ref. 1). (3) Switzer, G. and E.H. Bailey (1953) Afwillite from Crestmore, California. Amer. Mineral., 38 |  | | Journal (article/letter/editorial) | | habit and mode of occurrence the original find at Scawt Hiil. Crystals are in general poor, but it has been...cell dimensions: oo : 1 0 . 2 2A , aibic bo: co : 1 5 . 4 2A , 0.6628:1:0.4345 A: 6.70 A 100"29'...only at Scawt Hill, County Antrim, Ireland, Tilley (1930), and Ballycraigy, Larne, N. Ireland, McConnell...which also appears in similar massive veins of afwillite, which was recently identified from Crestmoreby...University, has completed a study of scawtite from the Scawt Hill and Ballycraigy occurrences.Our results are in |  | | Journal (article/letter/editorial) | | AFWILLITE FROM CRESTI,IORE, CALIFORNIA' GnoncB Swttzen, U. S. National Museum, Washington,D' C', AND...found as crusts of small crystals along cracks Afwillite,3cao in blocks of contact rock on the floor of...identified as afwillite,3cao 2sio2.3H2o, another in the seriesof hydrous calcium silicates. Afwillite was first...was noted at Scawt Hill, Larne County, Antrim, Ireland, by Tilley (1930), where afwillite was found as...with calcite in a spurrite rock. The crestmore afwillite becomesthe third known occurrenceand the fi.rst |  | | Journal (article/letter/editorial) | | 324 Ettringite from Scawt Hill, Co. Antrim. By F. A. BANNISTER, M.A. Assistant-Keeper in the Mineral...at Scawt Hill, near Larne, Co. Antrim. There it occurs with three other rare minerals, afwillite, portlandite...fresh cleavage fragments4 of ettringite from Scawt Hill handed to Mr. Hey for chemical analysis, Professor...the largest crystal of ettringite yet found at Scawt Hill, measures 1 j. Lehmann, Neues Jahrb. Min., 1874...(1010). F. A. BANNISTER ON ETTRINGITE FROM CO. ANTRIM 325 1.1 x 0.8 • 0.5 mm., and has a specific |  | | Journal (article/letter/editorial) | | XXll. The dolerite-chal]c contact of Scawt Hill, Co. Antrim. The production of basic alkali-roclcs... Field Occurrence. Scawt Hill, situated six miles n o r t h of Larne, Co. Antrim, forms a prominent height...edge of the Antrim 'plateau basalt' lavas. The geological structure of this portion of Antrim is comparatively...chalk and older Mesozoic rocks is covered by the Antrim Tertiary basalts, which are divisible into a lower...of bauxitic and pisolitic iron-ore deposits. Scawt Hill itself forms a mass of olivine-dolerite breaking |  | | Journal (article/letter/editorial) | | disilicate (ranlcinite), a new mineral from Scawt Hill, Co. Antrim. (With Plate V.) By C. E. TILLEY, B.Sc...melilite, and wollastonite at the locality of Scawt Hill, but hitherto the compound itself has not been...of further material among the larnite-rocks of Scawt Hill has now revealed its presence in several specimens...to be obtained, and account of the mineral at Scawt Hill will therefore be prefaced by a note on the slag...v e l a n d , O h i o , 1928, n o . 11.) At Scawt Hill the disilicate is found in association with the |  | | Journal (article/letter/editorial) | | 419 Portlandite, a new mineral from Scawt Hill, Co. Antrim. By C. E. TILLEu Ph.D., B.Sc. Professor of...recently collected larnite-spurrite-rocks from Scawt Hill the writer observed crystals now shown to be...grained afwillite, forming infillings in these contact-rocks. In the previous record of afwillite at Scawt...to a spurrite-rock. Since that time, however, afwillite has been frequently observed in infillings associated...infillings now referred to consist essentially of afwillite, calcite, and a colourless hexagonal platy mineral |  | | Journal (article/letter/editorial) | | Hurlbut (seepage 1141in this issue)on crystalsfrom Scawt Hill, and the authors are forced to the conciusionthat...hexagonalcrystals associated with calcite and afwillite, and as somewhatlarger grains showing few crystal...crystal faces, usually penetrated by afwillite prisms. The wellformed crystals are stout prismatic in habit...small very steeprhombohedralcrystals,and the afwillite is normally in slender bladed prisms. Puysrcar...Hurlbut (1960). Tasln II. UNrr Crr-r, DnnnNsrons Co Ettringite Ettringite Ettdngite Ettringite 1 2 |  | | Journal (article/letter/editorial) | | Ballycraigy and Scawt Hill, both of which 673 I:[YDRATION OF LARNITE A~,TD BI:CEDIGITE are near Larne, County...County Antrim. In a previous paper the natural gel from Ballycraigy was briefly described, and identified...of the occurrence of I t these minerals at the Scawt Hill contact have been given by Tilley /// (1929,...in the endogenous zones at both contacts. At Scawt Hill they have been formed through the magmatic 5...S e a w t through the metasomatic reaction Hill, Co. Antrim. of flint nodules with the surrounding chalk |  | | Journal (article/letter/editorial) | | An Association of Afwillite with Spurrite. By C. E. TILLEY. rpHE mineral afwillite (3CaO.2SiO2.3H2O)...spurrite of the contact zone of the Scawt Hill dolerite Co. Antrim has revealed 1 Since the foregoing... 544, pi. xxxv.) Afwillite and Spurrite. 169 a second occurrence of afwillite, lining a cavity in...distinct from that recorded for the original afwillite where the face 100 is inconspicuous. Crystals...010). The other distinctive optical features of afwillite are the close approximation of the refractive |  | | Journal (article/letter/editorial) | | first discovered (Nawaz, 1974) at Inishcrone, Co. Sligo, Ireland. It occurred in association with afwiUite...occurrence of killalaite is noted at Carneal, Co. Antrim. The chalk-dolerite contact here (Sabine and...I975) is mineralogically similar to those at Scawt Hill (Tilley and Harwood, I931 ) and Inishcrone (Nawaz...plombierite-killalaite- afwillite plombierite-afwillite-portlandite-killalaite plombierite-afwillite-killalaite-calcite...colourless, isotropic base in which it occurs. Afwillite occurs either as anhedral-bladed crystal aggregates |  | Katona, I., Pascal, M.-L., Fonteilles, M., Verkaeren, J. (2003) THE MELILITE (Gh50) SKARNS OF ORAVITA, BANAT, ROMANIA: TRANSITION TO GEHLENITE (Gh85) AND TO VESUVIANITE. The Canadian Mineralogist, 41 (5) 1255-1270 doi:10.2113/gscanmin.41.5.1255 | Journal (article/letter/editorial) | | accompanied by monticellite, spurrite (or tilleyite, afwillite, kilchoanite) and, at a later stage, a granditic...monticellite et la spurrite (ou kilchoanite, tilleyite, afwillite) et, à un stade ultérieur, le grenat calcique...larnite), such as Scawt Hill (Tilley 1929, Tilley & Harwood 1931) and Carneal, Ireland (Sabine 1975, Sabine...One such case is that of dolerite contacts at Scawt Hill, where a melilite also occurs, with a different...seems reasonable to ask whether the gehlenite at Scawt Hill could be metasomatically derived from such melilite |  | | Journal (article/letter/editorial) | | pohwatp@si.edu Ettringite N’Chwaning II Mine, Northern Cape Province Republic of South Africa C oncrete...N’Chwaning II mine, Kalahari manganese field, Northern Cape Province, Republic of South Africa. This...between limestone and diabase at Scawt Hill, near Larne, County Antrim, Ireland, has produced microcrystals...microcrystals of ettringite. Scawt Hill ettringite is associated with afwillite, portlandite, and hydrocalumite (Palache...N’Chwaning II mine, Kalahari manganese field, Northern Cape Province, Republic of South Africa. Scott |  | | Journal (article/letter/editorial) | | Manual of the Mineralogy of Great Britain and Ireland (1858). These lists were published in the Reports...Somerset; 1 from Cheshire; 2 from Scotland; and 2 from Ireland). Geographical distribution of the minerals: of...England (75 of which are from Cornwall); 28 from Ireland; and 10 from Wales. (The remaining 12 minerals...(48 from Cornwall); 35 from Scotland; 19 from Ireland; and 7 from Wales. The remaining 5 are simply British...example, for SW England, Pennines and northern England, Wales, Ireland, Scotland, etc. When this has been |  | | Journal (article/letter/editorial) | | (4CaO.AI~O3.12H20), a new mineral from Scawt Hill, Co. Antrim. By C. E. TILLEY, Ph.D., B.Sc. Professor...portlandite 1 amongst the vug minerals of the Scawt Hill contact-zone, attention was drawn to some infillings...the hybrid zone of the contact, 2 consist of afwillite, portlandite, ettringite, and aggregates of a...This mineral is most intimately associated with afwillite, and examination of it shows it to be a hitherto...... 41.5 18.8 0 - 7 4 0 ... 0 - 1 8 4 ... H20 CO s ... ... 38.5 1.8 2.137 -- 100.6 ... ... II |  | | Journal (article/letter/editorial) | | 838 The thermal decomposition of afwillite. By Mrs. K. M. MOODY.1 Crystallographic Laboratory, Cavendish...Cambridge. [Read January 24, 1952.] HE mineral afwillite is one of the hydrated calcium silicates which...being linked directly to silicon atoms. When afwillite is heated it loses water. Parry and Wright S observed...products formed, using-X-ray powder methods. Natural afwillite crystals from Kimberley, South Africa, were used...vol. 20, p. 277. THERMAL DECOMPOSITION O F AFWILLITE 839 in intensity relative to the others ; they |  | | Journal (article/letter/editorial) | | 0.5 mm in diameter associatedwith calcite and afwillite in open fractures in the contact rock. An interesting...Ettringite I 458t.002 1 4618 I 455 002 Syntbetic Scawt Hill Crestmore, Calif. Thaumasite Thaumasite Thaumasite...Sweden Great Notch, N. J. Ducktown, Tenn. Co. Down N, Ireland Enclosed by thaumasite overgrowth Overgrowth...BANNrsrrn, l'. A. (1936) Ettringite from Scar-t Hill, Co. Antrim. Mineral. Mog. 24, 324329. Bnowr, GrnN V....Kwrr,r,, DraNr c. (1960) Thaumasite from co. Down, Northern rreland. Mineral,. Mag. 32,416-418. Lrncn |  | Marincea, S., Dumitras, D.-G., Calin, N., Anason, A. M., Fransolet, A. M., Hatert, F. (2013) SPURRITE, TILLEYITE AND ASSOCIATED MINERALS IN THE EXOSKARN ZONE FROM CORNET HILL (METALIFERI MASSIF, APUSENI MOUNTAINS, ROMANIA) The Canadian Mineralogist, 51 (3) 359-375 doi:10.3749/canmin.51.3.359 | Journal (article/letter/editorial) | | ASSOCIATED MINERALS IN THE EXOSKARN ZONE FROM CORNET HILL (METALIFERI MASSIF, APUSENI MOUNTAINS, ROMANIA)...Belgium Abstract The high-temperature skarn of Cornet Hill (Apuseni Mountains, Romania) is known as one of...Tithonic-Kimmeridgian reef limestones. The Cornet Hill skarn is clearly zoned. The zoning is defined by...hydrothermal and weathering (secondary) minerals such as afwillite, fukalite, scawtite, thaumasite, hibschite, xonotlite...firstly described in the Romanian skarns, i.e., afwillite, thaumasite, and fukalite, are reported here. |  | | Journal (article/letter/editorial) | | (Peacor et al., 1983), ettringite at Scawt Hill, Northern Ireland. (Moore and Taylor, 1970) and charlesite...growing in conjunction with calcite (CaCO 3), afwillite (3CaO. SiOz.Hz O), xonotlite (Ca 6 Si 6016 (OH)4)...(OH)4) and datolite (CaB(SiO4 (OH)). At Scawt Hill, Northern Ireland, ettringite is found in conjunction...portlandite (Ca(OH)z), afwillite and hydrocalumite (Moore and Taylor, 1970). Afwillite and xonotlite are naturally |  | | Journal (article/letter/editorial) | | and recently as a natural mineral a t Scawt Hill, County Antrim, to which Tilleya applied the name rankinite...was discovered t h a t rankinite is formed when afwillite is heated to about 1000 ~ C. 5 Natural rankinite...crystals were extracted from sections of the Scawt Hill rock, supplied b y the D e p a r t m e n t of |  | Clark, A. M., Smith, D. A., Symes, R. F., Tandy, P. C., Hart, A. D. (1995) Catalogue of Type Mineral Specimens in the Natural History Museum, London - With an appendix listing mineral species and varieties originally described from the British Isles. Natural History Museum, London. | Book | | (Cotype) BM 1979,00135 Green River Fonnation, Uintah Co., Utah, USA A. Pabst, P.A. Estep, E.J. Dwornik, R...(1968) Bull. Soc. fr. Min. Crist. 91, p. 34. Afwillite (Cotype) BM 1925,00080 Dutoitspan mine, Kimberley...Apachite (Cotype) BM 1980, 00532 Christmas Mine, Gila Co., Arizona, USA F.P. Cesbron & S.A. Williams (1980)...BM 86511 Borax Consolidated mines, San Bernardino Co., California, U.S.A. W.B. Giles (1903) Min. Mag....Bannisterite (Cotype) BM 1967,00321 Franklin, Sussex Co., New Jersey, USA M.L. Smith & C. Frondel (1968) |  | | Journal (article/letter/editorial) | | Trr-r-rv: Portlandite, a new mineral f rom Scawt Hill, Co. Antrim' Mineral' M a g . , 2 3 , N o . 1 4 2 ...OccunnrNcn: Found with afwillite in larnite-spurrite rocks at the contact zone at Scawt Hill. Results from the |
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