 | | Journal (article/letter/editorial) | | R.S.E., A.R.S.M., Director Geological Survey of Egypt; and H. F. HAEWOOD, M . S C , Ph.D., A.I.C., Lecturer...Dr. Hume on the igneous and metamorphic rocks of Egypt, and in the course of his kind criticism of the...from the region in the South-Eastern Desert of Egypt, where this type of rock is most GKOT,. MAG. 192O...Nos. 2 to 5 were obtained from the region in S.E. Egypt where these rocks are most conspicuously developed...Khrug. The majority of the gneisses occurring in Egypt may be classed either as granite-gneisses (crushed |  | | Journal (article/letter/editorial) | | combustion. Bright red hematite (red ocher) is also found with the sulfur, the red and yellow making a...pebbles), carnelian (red pebble), chalcedony (gray pebbles), jasper (red, brownish red, and yellow brown...Kansas. Kentucky—Almandite garnet occurs in small red crystals in the peridotites near Fielden, Elliott...from Bailey's Island, Casco Bay, Cumberland Co., Me. Mrs. Constance Trott, 36 Mt. Vernon St., Gardiner,...limestone quarry, located in Rogers City, Presque Island Co., Mich., was donated to R & M by Cal O. Gettings |  | | Book | | Sheet Gem Deposits: 115 119 The Zabargad Island, Egypt, Peridot Deposits 9. Diamond Pipes: 129 The...respectively. The classic peridot of Zabargad Island, Egypt and the new find at Argyle in Western Australia...Australian opal mining. Photographs of Zabargad Island were generously provided by Dr. Peter Bancroft...of all placer deposits are found on the tropical island of Sri Lanka (formerly Ceylon), without doubt,...coast of India. It has commonly been called the "island of gems" because of the large and spectacular array | | | Book | | Sheet Gem Deposits: 115 119 The Zabargad Island, Egypt, Peridot Deposits 9. Diamond Pipes: 129 The...respectively. The classic peridot of Zabargad Island, Egypt and the new find at Argyle in Western Australia...Australian opal mining. Photographs of Zabargad Island were generously provided by Dr. Peter Bancroft...of all placer deposits are found on the tropical island of Sri Lanka (formerly Ceylon), without doubt,...coast of India. It has commonly been called the "island of gems" because of the large and spectacular array |  | Vannucci, R., Shimizu, N., Bottazzi, P., Ottolini, L., Piccardo, G. B., Rampone, E. (1991) Rare Earth and Trace Element Geochemistry of Clinopyroxenes from the Zabargad Peridotite--Pyroxenite Association. Journal of Petrology, Special_Volume (2) 255-269 doi:10.1093/petrology/special_volume.2.255 | Journal (article/letter/editorial) | | lherzolites and pyroxenites from the island of Zabargad (St. John's Island, Red Sea) were analysed for rare earth...northern sector of the Red Sea, where the island of Zabargad (St. John's Island) crops out, exposing a...a very fresh uplifted fragment of sub-Red Sea upper mantle (Bonatti et al., 1981, 1986; Nicolas et al...(Piccardo et al, 1988), related to the opening of the Red Sea (Bonatti et al, 1983, 1986; Nicolas et al, 1985)...with Ca- and alkali-rich metasomatic minerals (apatite, scapolite, and colourless Ti-poor phlogopite) |  | | Journal (issue) | | Zusammenfassung ,, Die kleine Insel Zabargad (St. John's Island) im Roten Meer ist ein herausgehobenes Stück...auf englischen Karten findet sie sich als „St. John's Island". Wechselhaft wie die Namen ist auch die Geschichte...Phosphate Company, Cairo, und dem Geological Survey of Egypt, Cairo, konnten wir im Jahre 1980 eine Expedition...Herrn Ibrahim KAMEL, und dem Geological Survey of Egypt , Cairo. Weiters danken wir den Herren Mahmoud A... Osman Abd Akadar HASSAN, Geological Survey of Egypt und Herrn Walter ZWINGER, 182 KURAT. G .. NIEDERMA |  | | Journal (article/letter/editorial) | | et al. Bard, J.P., Metamorphism of an obducted island arc: example of the Kohistan sequence (Pakistan)...REE and isotopic study of alkaline magmas and apatite-rich mantle xenoliths from the Southern Highlands... et al. Styles, P. and Gerdes, K.D., St. John's Island (Red Sea): a new geophysical model and its implications |  | | Journal (article/letter/editorial) | | microscopebrownish-red, weakly pleochroic,Z dark brownish-red, X light brownish-red, absorption Z > X...crystals lessthan thermonatrite, associated with apatite, aegirine, and baryto0,005mm, of cubo-octahedralform...4t0.6. M.F. Schmeiderite = gshmi3rjsyif6 Violet-red grains, associatedwith rhodochrosite, were found...cancriniteand its alteration products from St. John's Island, Red Sea,Egypt. N euesJahrb. Mineral. M onatsh., |  | | Journal (article/letter/editorial) | | ferrobasalt and uplift of ultramafic rocks to above the sea-level which is suggested by detritat ultramafics...serpentinites - Evidence of a fossil transform fault On the island of Tviberg (Fig. 1) there is evidence for the existence...dykes are exposed on the SE and W coast of the island. The dykes strike E-W to NE-SW and have shallow...overgrown by small fibers of actinolite. Zircon, apatite and opaques are typical accessory phases. Some...of low-MgO ferrogabbro have anhedral grains of apatite and irregular grains of a leucoxene/opaque intergrowth |  | | Journal (article/letter/editorial) | | the Nile River or east to the shores of the Red Sea for further transport to the gem-cutting and goldsmithing...and sold many specimens of this beryl. These early red beryl crystals were very small, rather dull colored...yellowgreen peridots of Zabargad (St. John's Island) in the Red Sea. Possibly the rarest of all beryls...beryls, until the discovery of the unique red beryl of Utah, was the colorless variety known as goshenite...if not rare. A few special words about the Utah red beryl are not amiss here because of its extreme rarity |  | | Book | | Item ITEMS - Mohs' Scale Item 1 Talc 5 Apatite 7 2.5 Finger nail 5.5 Glass window 8 Topaz...others. There are six planes of symmetry. iv, H7 apatite beryl Similar to the hexagonal system. There...less. The “absorption spectrum” produced except red and green light and through when white light passes...through a gem¬ the filter a true emerald appears red while stone can be viewed using an instrument imitation...colour. A ruby coloured by radiation chromium and a red almandine garnet although these may fade with time |  | | Journal (article/letter/editorial) | | et al. Bard, J.P., Metamorphism of an obducted island arc: example of the Kohistan sequence (Pakistan)...caicalkaline volcanism on Santorini and Milos, Aegean Sea, Greece Baumann, A., see Jarrar, G. et al. Br, K...and origin of smectites in the Atlantis II Deep, Red Sea Collette, B.J., see Williams, C.A. et al. Condomines...H., see Rison, W. and Craig, H. Crough, S.T., Apatite fission-track dating of erosion in the eastern...W., The isotopic and chemical evolution of Mount St. Helens Halverson, J.E., see Scott, M.R. et al. Hamilton |  | | Journal (article/letter/editorial) | | manganese and aluminum have been measured for St. John's olivine undergoing cation exchange with synthetic...synthetic, apatite-saturated silicate melts containing relatively high concentrations of Sin, St, and Pb...olivine (approximately 90% forsterite) from St. John's Island, Egypt was immersed in olivine-saturated, basaltic...striking difference between the Watson et al. (1985) apatite-diffusion experiments and these olivine-diffusionexperiments...Watson et al. study, the REE, Sr and Pb in the apatite were present in trace or minor quantities and therefore |  | | Journal (article/letter/editorial) | | t e d . Gunnar Bjareby, 147 W o r t h i n g t o n St., Boston 15, Mass. EXCHANGE — Copper arsenates and...i n g material. John Parnau, 1 3 4 2 N . Lincoln St., Stockton, Calif. STAMPS W A N T E D , U.S. A N...t e l l a at 40(Z a lb. or 100 lbs. at 2 0 g lb. Red desert agate at $ 1 . 0 0 a lb. Tell me your needs...needs in rocks. Steve J . Jackovich, 1030 Arapahoe St., Rock Springs, W y o m i n g . ROCKS A N D MINERALS...Enterprises, Box 92C, A i d more, Okla. FOR SALE (TEXAS RED C R I N O I D FOSSIL R O C K — Y o u w i l l hfive |  | | Book | | fine hematite "Iron rose", 10cm across, from Fibbia, St Gotthard, Switzerland. lnstitut fur Mineralogie und...Rhodochrosite Witherite Malachite Azurite Anglesite Apatite Barite Hureaulite Strengite Galena (ps. after Pyromorphite)...Cassiterite Cassiterite Manganite Scheelite South Africa St Andreasberg, Harz, FRG Shikoku, Japan Grube Georg...Cumberland, GB Vlb Nordmark, Sweden VI la St John's Island, Red Sea, Egypt Vllb Morawicza (Ocna defier), Banat...Kirgizia, USSR Vllb Miralani Hills, Tanzania Vllb St Andreasberg, Harz, FRG VII lb Ain Babouk, Constantine |  | | Book | | ite stones, like on green made Compos- the red garnet glass (above), are of more than one piece...erosion, are carried by rivers to lakes or the sea. SEDIMKN TARY Metamorphic Rocks ROCKS may are...tree resin, collected from soft sediments or the sea. Jet is fossilized wood, found in some sedimentary...gemstone, are still viable. Treasure from i he Sea The action of seawater has given amber {fossilized...gem may of course Japan China OO Pakistan Egypt occur in other places, but probably not in sufficient |  | | Book | | tombs. Lapis was im¬ ported from Turkestan into Egypt nearly ten centuries before Moses led the Hebrews...the absorbed colors. A ruby, for example, appears red because it absorbs blue, yellow, and green wavelengths...in most jewelry shops. To most people garnet is a red gem, yet it occurs in shades of purple, orange, pink...Jade is not only green, but can be blue, purple, red, brown, gray, white, or yellow. In gems, subtleties...Incandescent lamps give a light that is warm and yellowish-red, while fluorescent lamps tend to be bluish. A good |  | | Book | | tangled mass of fine, blackishgreen needles with shiny red grains between them. The freshly fractured surface...name to you. The green needles are hornblende, the red grains are nothing else but garnets, the same 'garnet'...choice of three colors: black, red and yellowish-brown. Two of these, red and yellowish-brown, were supplied...Pls. 14- 17 quartz, Pls. 22, 23 calcite, Pl. 30 apatite and -pyromorphite, Pl. 37 beryl, Pl. 38 tourmaline...93), quartz (Figs. 17 and 19 and Pls. 14--17), apatite (Pl. 30, p. 142), idocrase (Pl. 36, p. 164), augite |  | | Journal (article/letter/editorial) | | Boakite. A trade name for a brecciated green and red jasper. R. Webster, Gems, I962, P. 753. Bombollalite... Acta, 54, 1112. The 'IO A Manganite' from deep-sea nodules described by W. Buser (in Oceanography, Amer...[M.A. 15-352.] Creolite. A superfluous name for a red and white banded jasper from California. R. Webster...unspecified green and white rock from Vancouver Island, British Columbia. R. Webster, Gems, 1962, p. 755...An objectionable trade name for artificial light-red corundum. R. Webster, Gems, I962, p. 755. Not to |  | | Journal (article/letter/editorial) | | Rhinegraben. - - In: Graben Problems, J. H. ILLIES & St. MUELLEa, Eds. Stuttgart (Schweizerbart'sche Verlagsbuchhandlung)...Glaukophansehiefern dem *) Author's address: Prof. ST. ArnTON, Institut de Min6ralogie-P6trographie, Universit6...Lausanne, Palais de Rumine, Lausanne, Switzerland. 430 ST. AYRTON - - Rifts, evaporites and the origin of certain...evolution in the alkali (especially sodium) content of sea water, which in turn may correspond to progressive...and in particular to alkaline syenites and 432 ST. AYRTON - - Rifts, evaporites and the origin of |  | | Journal (issue) | | may also take on shades of black, brown, green or red or combinations of all these colours. m VARIETIES...section through an agate nodule showing alternate red and white bands (Brazil). Below: Agate pebbles from...are often, but not always, coloured with alternate red and white bands. Historically, the most famous source...plentiful deposits of agate have been found in China, Egypt, the Italian Alps, Madagascar and Mexico. Agate...colourless, although various shades of brown, grey, pink, red or yellow may also be found in limited areas. The |  | | Journal (issue) | | Miller Famous Mineral Localities—Saint John’s Island, E gypt..........................................Harker, 42 Oxford St., Leicester LE1 5XW South Africa: Horst Windisch, 30 van Wouw St., Groenkioof, Pretoria...MINERALS Telephone 624-2 132 111 W. W A S H IN G T O N ST., TUCSO N, A R IZ O N A 85701 F. CURETON II & SONS...by F M members. Ed. CALVIN MITCHELL FARM DeKalb, St. Lawrence Co., New York by George Robinson This famous...467-0212 Pink a p o p h y llite , St. Andreasberg, Harz; Raspberry red rhodoch ro site , “Wolf” mine, Herdorf |  | | Journal (issue) | | Minas Gerais, Brazil. Joe Budd photo. Gold, 8 cm, St. Johns, Newfoundland, Canada. Joe Budd photo. Supplement...January-February, 2009 KEVIN BROWN COLLECTION Red beryl, 2.1-cm crystal, Wah Wah Mountains, Beaver...DIANE & KEITH BROWNLEE COLLECTON lt----------- Red beryl, 4.3 cm, Violet cl Mountains, Utah. Ex Dea...JANIS COUNTISS COLLECTION Aquamarine beryl with apatite-(CaF) on muscovite, 13.5 cm, Chumar Bakhoor, Hunza...2009 SANDRA B. GEE COLLECTION Gypsum, 4.9 cm, Red River Floodway, Winnipeg, Manitoba, Canada. Joe Budd |  | | Journal (article/letter/editorial) | | knowledges on the geodynamic evolution of the Afar-Red Sea system. R6sum6 Dans ce travail nous presentons...Danakil Alps, between the Afar Depression and the Red Sea, and it has been built along an E - - W fracture...NNW tectonic trend of the Afar Depression and Red Sea rift (Fig. 1). This transversal volcanic activity...(andesine-labradorite), pyroxene, olivine, opaque minerals, apatite and brown glass. Picritic basalts, mugearites,... Fig. 1. Sketch map of the Assab and southern Red Sea area. 1 = limits of tile escarpements; 2 = axial |  | | Journal (issue) | | naming was largely based on their colour. Thus all red stones were thought of as some inferior form of ruby...gemmological nomenclature. Since about 1979 orange-red coloured garnets have been offered in the gemstone...it now reaches the market enhanced by heat. The red ruby coloration is not affected by heat, but undesirable...Gems & Gemology (Vol. 16, p. 194) the testing of a red-orange natural sapphire in which most of the colour...a full range of diffusion colours from orange to red to pink. At that time we did not anticipate seeing |
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