 | | Journal (issue) | | emmo emmo 0 Volume 28 N o . 5 January 2003 Chrome chalcedony Sky-blue glass / Brazilian imperial totiaz...1082-4 J. Gemm., 2003,28,5,257-264 A new chrome chalcedony occurrence from Western Australia Margot J... e-mail: nyanga@icenet.com.au ABSTRACT: Chrome chalcedony, an ornamental rock variety new to Australia...properties are within the range characteristic of chalcedony with RI 1.539 and SG 2.57. The dark green colour...α-quartz form part of the chalcedony matrix. Mtorolite, a variety of chrome chalcedony first described from |  | Farkaš, Juraj, Chrastný, Vladislav, Novák, Martin, Čadkova, Eva, Pašava, Jan, Chakrabarti, Ramananda, Jacobsen, Stein B., Ackerman, Lukáš, Bullen, Thomas D. (2013) Chromium isotope variations (δ53/52Cr) in mantle-derived sources and their weathering products: Implications for environmental studies and the evolution of δ53/52Cr in the Earth’s mantle over geologic time. Geochimica et Cosmochimica Acta, 123. 74-92 doi:10.1016/j.gca.2013.08.016 | Journal (article/letter/editorial) | | and South America, and our results confirm that a chromite-hosted Earth’s mantle Cr inventory is uniform...indicate that the bulk Cr isotope composition of the chromite-hosted mantle inventory has remained uniform,...Kraubat 443 Poland Ophioloite settings (podiform chromite)1 N/A L. Paleozoic (540– 420 Ma) N/A 2 3 4...Fore-arc settings of the Alpine orogen (podiform chromite in residual dunite and harzburgites)2 Bosnia Mid-oceanic...settings, “MORB chromite” associated with peridotite/serpentine)1214 Macedonia MORB (?) chromite in dunite |  | | Report (edition) | | additional occurrences of emerald, opal, agate, chalcedony, organic gems, tiger eye jasper, aragonite, cordierite................. 15 Halls Creek Orogen — Lamboo Province.................................................................... 15 East Kimberley diamond province ................................................................... 20 East Kimberley diamond province .................................................................. 20 North Kimberley diamond province ............................................. |  | | Report (edition) | | sawable diamonds (average 2 ct) from Ellendale diamond mine (courtesy Kimberley Diamond Company) Contents...................... 21 East Kimberley Diamond Province.................................................................... 24 East Kimberley Diamond Province................................................................... 24 North Kimberley Diamond Province ................................................................... 26 West Kimberley Diamond Province.............................................. |  | | Journal (issue) | | micas, talc, pyrophyllite, chlorite, wollastonite, chromite, calcite, dolomite, Fe-oxide, apatite, quartz...quantities of talc, chlorite, quartz, albite, chromite, ilmenite, magnetite, apatite and fluorite (Moroz...1983. The genesis of an emerald from the Kitwe District, Zambia. Neues Jahrbuch für Mineralogie, 175-86...different deposits. Ringsrud, R., 1986. The Coscuez mine: a major source of Colombian emeralds. Gems and...353 Chrome chalcedony - a review Dr Jaroslav Hyrsl Kolin, Czech Republic ABSTRACT: Three chrome chalcedonies |  | | Journal (article/letter/editorial) | | Ceriopyrochlore Cerite Cerussite Chabazite-(Ca) Chalcedony Chalcocite Chalcomenite Chalcophanite Chalcopyrite...Choloalite Chondrodite Chrisstanleyite Christite Chromite Chrysoberyl Chrysocolla Chrysoprase Cinnabarite...Zr)(Si2O7)2OF3 Hg2I2 Ag2Hg3 Pb (Zn,Cu)(OH)(VO4) chrom chalcedony Na3Ti3.6 Nb0.4(Si2O7)2O4·4(H2O) KAl2(Si3Al)O10(OH...hanging wall. During a subsequent mining period, the mine was re-opened to recover sideritic parts of the...greater than 90% olivine, with minor pyroxene and chromite. A coarse-grained mafic (basaltic in composition) | | | Journal (article/letter/editorial) | | Ceriopyrochlore Cerite Cerussite Chabazite-(Ca) Chalcedony Chalcocite Chalcomenite Chalcophanite Chalcopyrite...Choloalite Chondrodite Chrisstanleyite Christite Chromite Chrysoberyl Chrysocolla Chrysoprase Cinnabarite...Zr)(Si2O7)2OF3 Hg2I2 Ag2Hg3 Pb (Zn,Cu)(OH)(VO4) chrom chalcedony Na3Ti3.6 Nb0.4(Si2O7)2O4·4(H2O) KAl2(Si3Al)O10(OH...hanging wall. During a subsequent mining period, the mine was re-opened to recover sideritic parts of the...greater than 90% olivine, with minor pyroxene and chromite. A coarse-grained mafic (basaltic in composition) |  | | Catalog/List | | ENSTATITE EPIDOTE EUCLASE EUXENITE CELSIAN CERUSSITE CHALCEDONY CHALCOCITE CHALCOPY1UTE CHAPINITE CHAROITE CHERT...CHLOROMELA.NITE CHLOROSPINEL CHONDRODITE CHROME TOURMALINE CHROMITE CHRYSANTHEMUM STONE CHRYSOBERYL ALEXANDRITE...TOURMALINATED QUARTZ TOURMALINE ACHROITE BUERGERITE CHROME TOURMALINE DRAVITE ELBAITE JNDICOLITE lIDDICOATJTE...green symhetic corund11m Mixture of variscite, chalcedony and quartz. Glass (strass) Amazonstone (feldspar...Sky-bl11e 1mithso11ite Azurmalachice Pale blue chalcedony Dacalite [Baffa diamond} Bal de /e11 [Balas |  | | Journal (issue) | | primary solid and gaseous inclusions, viz. (1) chromite, magnetite, ilmenite, (2) graphite, (3) olivine...individual crystals; only spinel minerals a n d olivine-chromite occur a t places in aggregates. T h e physical...Majhgawan ( 2 4 ° 3 8 ' N : 8 0 ° 4 ' E ) in P a n n a district, M a d h y a Pradesh, and its geology has been...magnetite and a n d subsubrounded rounded chromite chromite in in diamonds; d i a m o n d s ; grains grains...and triangular magnetite, chromite and ilmenite. magnetite,chromite chromite and a n d ilmenite. ilmenite |  | | Book (edition) | | ay yst Q 140 Hawk’s-Eye 140 Tiger’s-Eye 140 Chalcedony 142 142 see 142 oo 120 Garnet Group ie ‘...Color-change sapphire Artificially blue-tinted chalcedony Moldavite (natural glass) Rock crystal (quartz)...crystal (quartz) Artificially blue-tinted jasper (chalcedony) Citrine (quartz) Aventurine (quartz) Yellow...Zunyite Lizardite tetragonal Bixbyite Boleite Chromite Anatase Garnet Grossularite Hackmanite Apophyllite...Bytownite Calcite Carnelian Cat’s-Eye Quartz Chalcedony Chromdravite Chrysoprase Citrine Cinnabar Corundum |  | | Book (edition) | | extensive fields in the prophetically named Kimberley district of Western Australia promise to be of world importance...Smith gave valuable information on the new chrome chalcedony found in Rhodesia. The staff of both western...First Edition For two decades, an earlier work of mine – Practical Gemmology – has proved a useful elementary...intermediate and acid members of the volcanic province in southern Brazil and Uruguay, and the fire opals...particularly in the Yun Yang deposit in Hubei Province, China. For many years on the basis of experimental |  | | Book (chapter) | | Mn2+-rich calcite, Dana 6th, 269 (1892). calcined chalcedony = quartz-mogánite mixed-layer, Dana 7th III,...green-yellow beryl, Thrush 168 (1968). canary chalcedony = yellow quartz-mogánite mixed-layer, Bukanov...Chalcedon-Tierchen = animal inclusion, Chudoba RI, 15 (1939). chalcedony = quartz-mogánite mixed-layer, EJM 4, 693 (1992)...(2006). chalcedony moonstone = white quartz-mogánite mixed-layer, Thrush 193 (1968). chalcedony onyx =...Fe2+-Cr3+-rich beryl, GG 42, 137 (2006). chromate de fer = chromite, de Fourestier 71 (1999). chromate de plomb brun |  | | Book (edition) | | Cat's Eye 124 Hawk's Eye 124 Tiger's Eye 124 Chalcedony 126 Cornelian 126 Grossular 106 Sard 126 Moonstone...opal German diamond German lapis Gold topaz chalcedony Rock crystal Pyrope or rose quartz Bluegreen...Peridot Whewellite Yugawaralite Sphalerite Chalcedony Chrysopase Cinnabar Prehnite Sulphur Citrine...61/2-7 Willemite Cancrinite Charoite Diopside Chalcedony Chrysopase 61/2-7 Hyperstene 61/2-7 61/2-7...Coral Agat Fossilized wood Jasper Cordierite Chalcedony Chrysoprase Moss agate Tiger's eye Skalpolite |  | | Book | | stone came from — some¬ times down to the actual mine. Today it is commonplace to see in sale catalogues...in garnet, kornerupine, corundum and spinel • chromite in emerald • diamond in diamond Formation of...spinel; emerald from Muzo, Colombia • chrome diopside in diamond • chromite in peridot • olivine in diamond...commonest ones are olivine, garnet, diamond, chrome diopside, chrome enstatite, pyrrhotite, pyrite, pentlandite...olivine colour response; some contain grains of chromite. The crystallites are found either as individuals | | | Book | | the stone came from - sometimes down to the actual mine. Today it is commonplace to see in sale catalogues...in garnet, kornerupine, corundum and spinel • chromite in emerald • diamond in diamond Formation of...spinel; emerald from Muzo, Colombia • chrome diopside in diamond • chromite in peridot • olivine in diamond...commonest ones are olivine, garnet, diamond, chrome diopside, chrome enstatite, pyrrhotite, pyrite, pentlandite...olivine colour response; some contain grains of chromite. The crystallites are found either as individuals |  | | Book | | common ❍ Amethyst with Chalcedony (Quartz) Mineralogy: amethyst with chalcedony stripes (trigonal, primary)...[1] [2] [3] Rarity: common ❍ Carnelian, banded (Chalcedony) Mineralogy: carnelian-coloured agate (quartz...always available ❍ Carnelian, orange Mineralogy: chalcedony containing hematite (quartz, trig., prim.) Indications:...organs. Bib.: [2] Rarity: readily available ❍ Chalcedony, blue Mineralogy: fibrous quartz (trigonal, primary/secondary)...[1] [2] [3] Rarity: readily available ❍ 22 Chalcedony, blue banded ‘Blue Lace Agate’ Mineralogy: fibrous |  | | Book (edition) | | 142 Emerald 106 176 176 178 Pyrite 136 Chalcedony 142 Sapphire 102 Aquamarine 134 Thulite ...Color-change sapphire Artificially blue-tinted chalcedony Moldavite (natural glass) Rock crystal (quartz)...crystal (quartz) Artificially blue-tinted jasper (chalcedony) Citrine (quartz) Aventurine (quartz) King’s...Almandine Analcite Andradite Bixbyite Boleite Chromite Cuprite Demantoid Diamond Fabulite Fluorite Gahnite...Gold Beryl Gaspeite Carnelian Cat’s-Eye Quartz Chalcedony Chromdravite Chrysoprase Citrine Cinnabar Corundum |  | | Journal (issue) | | Iran and its Sunni Arab neighbors, and between Turkey and the Kurds. Iraq, of course, is at the center...mastering the market. Looked at The New York diamond district has long been the center of diamond distribution...Shown here is the recovery plant at the Jwaneng mine in Botswana. Photo courtesy of Debswana. another...for a total value of about US$3.5 billion. The province of Saskatchewan will likely be an important player...tourmaline, lemon and Madeira citrine, peridot, chrome tourmaline, green onyx, smoky quartz, and diamonds |  | | Journal (issue) | | beryl in the world: the Ruby Violet (or Red Beryl) mine in Utah’s Wah Wah Mountains. Shown here is a unique...ACCESS Dr. Pezzotta guided the senior author to the mine in July 2003. It is located about 140 air-km (87...to the GEMS & GEMOLOGY WINTER 2003 285 The mine is situated on a low hill (figure 4), at coordinates...the famous Ampandramaika-Malakialina pegmatite district, one of many areas in central Madagascar that...four-wheel-drive vehicle. Photo by Brendan Laurs. mine. The assistance of local guides was necessary for |  | | Book (edition) | | donlцssite. .4m. ЛСп. 50, 476 (1965). А1-chromite = :Uлiсн chromite, J1iп. .'lag. 59, 449 (1995). A1-clinopyraxeпe...Egleston 8 (1892). AlumivatcЬromit = А1-Mg-ricн chromite, "(1п. „lag. 38,988 (1972). 5 Aluminate = synthetic...A1umoЬeresofite = А1-Mg-rich chromite, Deer et a1. V, 78 (1962). A1umo6eresoиi = А1-Му-riсh chromite, Неу 325 (196.2)...Alumoberesouзlit = А1-Mg-rich chromite, Chudoba 4 (1971). Alumo-berezдsite = А1-Mg-rieh chromite, Afin. „fag. 35,..."lag. 25, 621 (1940). Alumochronite = Al-rich chromite, Abahlain et a1. 10 (1968). Alumochmysocolla = |  | | Book | | Group Tourmaline and Zircon Quartz, Agate and Chalcedony Opal Peridot, Sinhalite, Zoisite and Spodumene... H. Zircon I. Quartz group J. Opal K. Chalcedony group L. Jade minerals M. Lapis lazuli, turquoise...Underground working at Premier Diamond Mine zb. Grease tables at the Premier Mine 3. Removing the overburden covering...in Tanzania 15 b. Zoisite crystals from Merelani Mine 16. Large-scale production of synthetic corundum...am very grateful. The photographs of the zoisite mine and the crystals therefrom were kindly sent to me |  | | Report (issue) | | Regional Surveys in the Southern Uplands, the Lake District, East Anglia and the Worcester Basin. Here, aspects...Provincial Geological Surveys concerned only with district geological surveying, but additionally a 'Federal...(London) until accommodation is built at Keyworth. District Offices in Belfast, Aberystwyth, Exeter and Newcastle-upon-Tyne...postings), in Edinburgh of about 250, and in the District Of fices and Observatories of about 50. Such...to the stratigraphy and structure of the Lake District. In Scotland sin1ilar surveys have been mounted |  | | Journal (issue) | | 187 Peñas Blancas: An historic Colombian emerald mine R. Ringsrud and E. Boehm 251 Book review 254...Colombian emerald mine Ron Ringsrud and Edward Boehm Abstract: The Peñas Blancas emerald mine is part of Colombia’s...and La Pita mines. This is the largest emerald district in Colombia, and it is the most productive and...Peñas Blancas emeralds, and compares this historic mine to other famous producers in the region. Keywords:...Blancas, located in the famous Muzo mining district. This mine has rarely been mentioned in gemmological |  | | Book (edition) | | varieties of feldspar from the varie¬ ties of chalcedony that may resemble them. Tiny breaks often pres¬...feldspars, but are shell-like with a waxy luster on chalcedony. Th e presence of cleavage in a gem is proof...garnet. Quartz & Syn. Danburite. Dumortierite. Chalcedony. Peridot. Jadeite. Andradite garnet. Axinite...Turquoise . . . AlbiteOligoclase. Coral. Iolite. Chalcedony. Serpentine. Orthoclase. Microcline. Variscite...Penfield Balance (as well as its modifications) deter¬ mine specific gravity directly. The balances mentioned |  | | Journal (issue) | | ..............30 Bronze Sapphire• at th• Mincey Mine by Paul Broughton ................................Is priced at only . . . $.85 per lb. BLACK SPIDER MINE TURQUOISE - All ring size stones, mostly of a medium... $1.50 per lb. Are Agate, Mexico. nice brown chalcedony with many fire layers..........................(Bryozoa) Mudstone SIiica Carbonate Rock Roscoelite Chalcedony Oil Sandstone • llsemannlte with Jordislte Lipa...Goethite Hematite Limonlte Stibnite Orpiment Enargite Chromite Fluorite Cinnabar Braunite hours, and experienced |
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Chromite mine, Harmancık District, Bursa Province, Turkey