 | | Journal (article/letter/editorial) | | volcanic rocks and massive sulphide deposits in Egypt Nagy Shawky Botros Egyptian Geological Survey, Dakahlia...Botros, Abtal El Faloga Street, Mit Ghamr 35611, Egypt Received 14 August 2002; accepted 1 July 2003 Abstract...sulphide (VHMS) deposits in the Eastern Desert of Egypt (e.g., Um Saki deposit) are associated with Precambrian...deposits in Egypt are hosted intensively altered volcanic rocks. Besides talc, chlorite, carbonates and...talc deposits of Darhib, El Atshan, Abu Gurdi, Egat, Um Selimat and Nikhira are similar to those occurring |  | Mubarak, Heba S., Azer, Mokhles K., Surour, Adel A., Moussa, Hilmy E., Asimow, Paul D., Kabesh, Mona M.L. (2020) Mineralogical and geochemical study of rodingites and associated serpentinized peridotite, Eastern Desert of Egypt, Arabian-Nubian Shield. Lithos, 374. 105720pp. doi:10.1016/j.lithos.2020.105720 | Journal (article/letter/editorial) | | associated serpentinized peridotite, Eastern Desert of Egypt, Arabian-Nubian Shield Heba S. Mubarak, Mokhles...associated serpentinized peridotite, Eastern Desert of Egypt, Arabian-Nubian Shield, LITHOS (2020), https://doi...associated serpentinized peridotite, Eastern Desert of Egypt, Arabian-Nubian Shield By Heba S. Mubarak1, Mokhles...Centre, 12622-Dokki, Cairo, Egypt 2 Department of Geology, Cairo University, Egypt 3 Division of Geological...re ophiolitic mélange at Um Rashid, in the Eastern Desert of Egypt. The Um Rashid ophiolite is lP strongly |  | | Journal (issue) | | of certainty ; but I think the history of the western geode as I have given it, will support my theory...consideration of geodic formations, outside of the western geode, embraces a large variety, which I will briefly...directly organic origin, having been secreted from sea- water by the living organisms ; in other cases where...deposited round organic bodies, sạch as sponges, sea -urchins, and mollusca, which are com pletely enveloped...chemical alteration on the floor of the Carboniferous sea .” From these authorities we may accept the segration |  | | Journal (article/letter/editorial) | | were investigated. These are the minerals of the chlorite and the carbonate series. The samples are from...(Czech Republic, France, Germany, United Kingdom, Egypt, Nigeria and USA); these deposits are identical...158 (on average). The analytical points of the chlorite analyses are presented in the (Fetot-Mg-AlVI =...chlorites of ferruginized ironstones (Aswan and Red Mountain Formation). These chlorites present brown...[Al/(Al+Fe+Mg)]-[Mg/(Mg+Fe)]-atom.% diagram the chlorite analyses are concentrated in a limited field, |  | | Report (edition) | | with cubic and octahedral cleavages, Pequea silver mine; middle left: azurite crystals on calcite, “old”...from the owners of the land, from the quarry or mine operators before entering to collect. (Land ownership...tested copper by Benjamin Franklin. In 1732 Gap mine land was owned by the honorable Proprietors Thomas...manganese locality Wharton mine manganese-wavellite Delaware County Behr garnet mine locality Chrome Run chromite...nickel-cobalt-copper mine Mud Lake goethite locality Pequea silver mine Red Pit chromite mine Wood chromite mine Lebanon |  | Barkov, Andrei Y., Shvedov, Gennadiy I., Flemming, Roberta L., Vymazalová, Anna, Martin, Robert F. (2017) Melonite from Kingash and Kuskanak, Eastern Sayans, Russia, and the extent of Bi-for-Te substitution in melonite and synthetic Ni(Te,Bi)2–x. Mineralogical Magazine, 81 (3) 695-705 doi:10.1180/minmag.2016.080.119 | Journal (article/letter/editorial) | | Krasnoyarsk, Russia Department of Earth Sciences, Western University, 1151 Richmond Street, London, Ontario...NiTe2, named after its type locality, the Melones mine, at Carson Hill in the Mother Lode Belt, Calaveras...accessory constituent of the ore at the Robb-Montbray mine in northwestern Québec, Canada. Although melonite...reported occurrences of melonite are shown by the red symbol. light of overall variations gathered in...and hosts zones rich in CuNi, Au-Ag and platinum-group elements (PGE); MELONITE FROM EASTERN SAYANS AND |  | | Book (edition) | | sometimes red tinges, cobalt shows pink shades, while iron displays pronounced tones of red, brown, and...terms (see also explanations chapter): - Strunz Group (Strunz (2001; version 9); this provides the mineralogical...optical characteristics or shapes. - The Point Group illustrates how symmetrical a particular mineral...minerals which appear within a particular Strunz sub-group (listed here) or in mineral assemblages of a closely...fast overview and reflect the abbreviated Strunz group. • Where necessary, abbreviations for important |  | | Book | | arnianthus, blue 100 ...amianthus, Cape 100 amphibole group 98 analcite 76, 108, I 11 anatase 34, 34 andalusite...fassaite 97, 98 fayalite 75 feldspars 111 feldspathoid group I08 ferrierite 122 ferrimolybdite 63 fluoborite...85 gahnite 24 galaxite 24 galena 12, 13 garnet group 76 garnierite 107 gaylussite 50 gehlenite 85 gismondine...mesotype 119 metacinnabarite 13 meyerhofferite 54 mica group 104 mica, white 104 microcline 112, 113 miJlerite...68, 68 pyrope 76 pyrophyllite 102, 103 pyroxene group 96 pyrrhotite 12, 12 quartz 28, 31, 95 quartz, amethyst |  | | Report (issue) | | E3 KIramH o Mt. • Th 0 'ELSON. n Mt. 1 1 Red We■ o 0 ek1ma ,na na�tu L.Gr111mer1 f'O •'If...(Photo: Wendy St George). Figure9 Arfvedsonite. Group ofcrystalswithin cavity in peralkaline rhyolite...George). 10 Figure 10 Arsenic, former Kapanga mine, near Coromandel township. (10 x 8 cm). (Photo:...x 8 cm). (Photo: Wendy St George). Figure 1S Chlorite, in vermicular aggregates in quartz vein cutting...Figure 27 Magnetite . Octahedral crystals in chlorite schis t , Mount Drow ne, Toaroha Survey District |  | | Report (volume) | | oti01prat CORUNDUM AND THE PERIDOTITES OF WESTERN NORTH CAROLINA BY JOSEPH HYDE PRATT and JOSEPH...GEOLOGIST VOLUME I CORUNDUM AND THE PERIDOTITES OF WESTERN NORTH CAROLINA BY JOSEPH HYDE PRATT AND JOSEPH...of the Corundum and the Peridotite Deposits of Western North Carolina, pre¬ pared by Dr. Joseph Hyde Pratt...rocks in eastern North America. Peridotites in western North Carolina. Clay County. Macon County. Jackson...Dunite at the Bad Creek mine. Dunite of the Asbestos mine. Dunite of the Sapphire mine. Vicinity of Glenville |  | | Report (issue) | | A. Burdick, Manager of the Laurel Creek Corundum Mine, Pine Mountain, Rabun Co., Ga., Mr. Corn of Visage...Christian era, and that, as Scariabean gems. From Egypt, they were worked in such writers, also, we... ; 3rd Edition, p. 7. 1 HISTOR Y OF COR UND UM. We find, 1 nevertheless, certain writings of...near Canton, China. At St. Gothard, it occurs of a red or blue tinge in dolomite, and near Mozzo in Piedmont...hexagonal in Gellivara, Dr. J. Lawrence Smith; Emery Mine of Chester; Scientific Kesearches, p. 42. 3 |  | | Journal (article/letter/editorial) | | basal spacing of 7 A, belonging to the serpentine group. Brindley's (1982) generalized formula for this...-type layer silicate representing the Fe-rich chlorite end member. Moreover, the presence of kaolinite...fragments which were subsequently washed into the sea and winnowed by wave agitation and accumulated as...leading to a quartz-kaolinite-goethite-illite-chlorite mineral assemblage. Although he does not observe...sediments under reducing conditions containing a 7-A chlorite (possibly berthierine?) that formed at the expense |  | | Book (edition) | | Italy, The Netherlands, Switzerland, Saudi Arabia, Egypt, Bangladesh and Nepal. He is a life fellow of The...tectonic activities, and interactions between land and sea). FIGURE 1.2 One of the long-tunnel roads in Europe...the study to reliably determine the boundaries of sea and land, and the existence of lakes and rivers in...indicators, it is clear that the boundaries of land and sea in the past have frequently changed. Many areas that...rock structures on the western bank of “Lake Nasser” in Nubia, southern Egypt. The temples are originally |  | | Book (edition) | | the extrusive (volcanic) igneous rocks 5.3 Main group of igneous rocks and their composition 113 114...the mineral industry and human consequences 11.6.1 Mine waste catastrophe 11.6.2 Mineral process plant failure...Italy, The Netherlands, Switzerland, Saudi Arabia, Egypt, Bangladesh, Nepal, Bhutan, Jordan, and Israel....volcanism, earthquakes, mineral deposition under the sea, and exhibition on the City of Pompeii. The youngest...activities, and interactions between the land and sea). Fossils in Latin (fossus 5 being dug up) are the |  | | Book | | Origin of Blue Sapphire in Newly Discovered Spinel–Chlorite–Muscovite Rocks within Meta-Ultramafites of Ilmen...coloured by chromium and sometimes vanadium. The first group of authors in their review proposed an enhanced...in various places around the globe. Ruby is the red variety and sapphire is the blue variety, while all...These sapphires were formed together with a spinel–chlorite–muscovite rock during the metasomatic alteration...andalusite, garnet -grossular, and spessartine- and red-epidote) of “near” gem-quality from Thassos Island |  | | Book | | virtue of their chemistry where a discussion of the group properties is relevant. In addition to these cases...Consequently not just those pigments found on Western European easel paintings are detailed (though there...categories are used to group related terms that appear at the foot of each entry. The ‘Group’ category (bold...indication of the broad class of colour (blue, green, red and so forth). However, for a variety of reasons...seemed practicable to introduce broader ranges (‘Red-Orange-Yellow’) where this better suited the colours |  | | Journal (article/letter/editorial) | | No. 4 No. 5 No. 6 Downloaded by [University of Western Ontario] at 00:34 02 February 2015 Cover Photographs...photos. September/October: Silver crystals, Bachelor mine, Amethyst vein system, Mineral County, Colorado;...Arizona, 22 Agate, Turkey, 128–32 Agates from Western Australia Found in a 3,480-Million-Year-Old Host...Colorado, 413; Nevada, 515 Annabergite, Kilometer 3 Mine, Laurium District, Greece, R. B. Cook, 154–59 Apatite...485–87 Chlorargyrite, Nevada, 516 Chlorite–group minerals, 318–25 Chlorite, New York, 162 Chloritoid, Quebec |  | | Journal (article/letter/editorial) | | Ironstones Deposit in the Chulym-Yenisey Basin (Western Siberia) Maxim Rudmin 1,2, * , Santanu Banerjee...Ironstones Deposit in the Chulym-Yenisey Basin (Western Siberia). Minerals 2021, 11, 1008. https://doi...The clay components include minerals of the chlorite group (possible chamosite), nontronite, kaolinite...paleochannel sediments in the Pilbara region of Western Australia [1,16,22,23]. Continental ironstones...the neighboring marine epicontinental basin of Western Siberia [35,36]. The continental Chulym-Yenisey |  | | Journal (volume) | | Earth, Editorial and Design by T he Brown Reference Group pie ISBN O 7489 7935 2 NO i 07 04 18 Printed in...Mexico. Eight-sided crystals from the Traversella mine, Piedmont, Italy. .&. crystals. It can also be...are often replaced by pyrite. FACT FILE PYRITE Group: Sulphides Crystal system: Cubic Habit: Cubes,...quartz rather brittle. FACT FILE ROSE QUARTZ Group: Oxides Crystal system: Trigonal Chemical formula:...CHARACTERISTICS Rose quartz is a member of the oxide group of minerals. It is an oxide of silicon, and it gets |  | Chmielowski, Riia M., Jansson, Nils, Persson, Mac Fjellerad, Fagerström, Pia (2016) 3D modelling of hydrothermal alteration associated with VHMS deposits in the Kristineberg area, Skellefte district, northern Sweden. Mineralium Deposita, 51 (1) 113-130 doi:10.1007/s00126-014-0572-x | Journal (article/letter/editorial) | | parameters: the Ishikawa alteration index, the chlorite–carbonate–pyrite index and calculated net mass...geological mapping; namely that the sericite- and chlorite-rich alteration zones have complex and cross-cutting...coincidence of high values for the alteration index and chlorite–carbonate–pyrite index and large MgO gains, which...silicates. These zones are interpreted as the original chlorite-rich, Editorial handling: B. Lehmann Electronic...tremolite, talc, chlorite and dolomite with lesser clinozoisite, which have high chlorite–carbonate–pyrite |  | | | | amianthus, blue 100 -amianthus, Cape 100 amphibole group 98 annabergite 73 arduinite 119, /2/ argentite...dialogite 42, 42 diamond 5, 6 galena 12, /3 garnet group 76 garnierite 107 gaylussite SO gehlenite 85 gismondine...97, 98 fayalite 75 feldspars 111 feldspathoid group 108 ferrierite 122 ferrimolybdite 63 fluoborite...119 metacinnabarite 13 meyerhofferite 54 mica group 104 mica, white 104 microcline 112, //3 millerite...102, /03 pyroxene group 96 pyrrhotite 12, /2 siberite 96 siderite 42 silica group 31 silicates 75 sillimanite |  | | Journal (article/letter/editorial) | | micaceous phyllosilicates, kaolinite-, smectite-group minerals and the composition of glauconite are observed...taken as an equivalent. Some ferroan saponite and chlorite represent the basic branch of the bimodal rift...multifunction display. Corrensite and mixed-layer chlorite-corrensite are not only in altered basic magmatic...impacts. The glauconite-kaolinite-illite-smectite-chlorite assemblages are efficient tools for the depositional...can be used as a proximity indicator from land to sea from the 3 various subenvironments, e.g., from |  | | Journal (issue) | | Ceramic Age Field Report from Iran’s Largest Turquoise Mine Fall 2021 VOLUME 57, No. 3 EDITORIAL 185 Pinctada...mining and production at Iran’s largest turquoise mine. p. 247 REGULAR FEATURES 238 258 p. 264 Lab Notes...violet spinel • GIA Library and Museum Facebook group • James Shigley receives Shipley Award Editorial...add GST. Discounts are available for renewals, group subscriptions, GIA alumni, and current GIA students...publisher. About the Cover The Neyshabur turquoise mine in Iran is the subject of an in-depth field report | | | | | surrounded ce ne white calcite, from!iheBluebell Mine; Riondel, Digitized by the Internet Archive...groups: Minerals that have oxygen tightly bonded in a group around a central non-metallic ion. Oxides or carbonate...feldspar, nepheline, zeolite, sodalite, bonded in a group around a central silicon atom. kyanite, topaz, titanite...titanite, zircon, amphibole, pyroxene, chlorite, talc, clay, chrysotile, chrysocolla, quartz, lazurite...mineral samples. For example, steelgrey hematite has a red-brown streak, while steel-grey molybdenite has a | | | Book | | amianthus, blue 100 _amianthus, Cape 100. amphibole group 98 analcite 76, 108, 111 anatase 34, 34 andalusite...coquimbite 60 cordierite 95 galena 12, 13 garnet group 76 garnierite 107 gaylussite 50 gehlenite 85 gismondine...eye 31 fayalite 75 feldspars 111 feldspathoid group 108 ferrierite 122 ferrimolybdite 63 fluoborite...119 metacinnabarite 13 meyerhofferite 54 mica group 104 mica, white 104 microcline 112, /13 millerite...pyrolusite 34 pyrope 76 pyrophyllite 102, 103 pyroxene group 96 pyrrhotite 12, /2 quartz 28, 31, 95 nepheline |
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