 | | Journal (article/letter/editorial) | | Eur. J. Mineral. 2004, 16, 789-799 Opals from Slovakia ("Hungarian" opals): a re-assessment of the conditions...temperature, possibly up to 190°C. Key-words: Slovakia, gem opal, Raman spectroscopy, oxygen isotopes...Introduction The "Hungarian" opal deposits (now in Slovakia) were the unique source of gem opal in Europe...located in south eastern Slovakia, in the Dubník area near Košice, in the Libanka-Šimonka mounts (Webster...known as Hungarian opals because in the past this region was part of Hungary until the end of World War |  | | Journal (article/letter/editorial) | | able to examine precious opal from Cervenica, Libanka-Ridge, CSSR, and this is identical in diagnostic...the same relation that chalcedony does to quartz". However, whereas chalcedony appears to be identical...distinctive PRESENT absorption spectra in this region and Lippincott 1. Infra-red data et al. correlated...increasing disorder in the the intensities of the 620 region. Quartz gives a distinctive absorption cristobalite...that there were distinctive differences in the region 650 to 710 c m - ) ; this is attributed to infra-red |  | | Catalog/List | | some and polychromatic these the Simonka and Libanka, Opal made are The Precious Fire-Opal. are... may as in fine very siliin from one Chalcedony, or of more presenting denominated veins...THE is CARNELIAN CARNELIAN. nothing of Chalcedony, by its of and blood-red seldom to striated...generally It is and suddenly as to the be Chalcedony, in in great of of Silesia, veins the greatest...or prisms, pebbles. Frankenstein. Quartz, Chalcedony, favourites. shades, local from serpentine |  | | Report (issue) | | History, and Lore BY SI AND ANN FRAZIER 12 Classic Slovakia 14 Rainbows, Harlequins and Pins Afire: Play...precious opal were more than likely those in eastern Slovakia (formerly Hungary), which have a documented history...the beads are accurately described as agate, chalcedony, white and green quartz, steatite, and several...this specimen with red body color from Herl'any, Slovakia (6.2 x 5.0 cm). Collection & photo Zbynek Bufival...and Mineral Museum; photo JeffScovil Classic Slovakia Peter Huber is a high school math and computer |  | | Catalog/List | | was exclufound porphyritic are Simonka 17 Libanka, and cavities The in Opal value. occurring...Composition... Silica. Hardness... Specific from Chalcedony, a siliceous in texture, usually presenting...signet hence Silica, ... with a CARNELIAN Chalcedony, is is used or crystalline for is a ...stained in is a green Frankenstein. company Chalcedony, Chrysoprase It possesses a demand was as...and in in Opal. beautiful and sprang the Chalcedony, occurs deserves great that upon of found |  | | Book | | excellent coral was being harvested Mediterranean region. At any rate, by land or near Hyeres on the Mediterranean...pay economic TWELVE APOSTLES Jasper Sapphire Chalcedony Peter Andrew James homage to the twelve birthstones...a source of emerald. The most 1927 the Lataba District of northeast Trans¬ popular aquamarine color...may be found in almost any color In the Mogok district of Upper Burma, source of corundum it seems to...“hessonite” or as “cin¬ Trebenice, in the Bohemian region of Czech¬ namon stone,” because all gem-quality |  | | Book (volume) | | VOL.2 Bauer, Max Precious stones J FOX LAKE DISTRICT LIBRARY 2§| £ J3RAND AVENUE 60020 - PRECIOUS.... . 496 496 496 497 499 502 C. Chalcedony .... Common Chalcedony Carnelian. Plasma ..... Heliotrope...p. 376.) LAPIS-LAZULI, TURQUOISE, MALACHITE, CHALCEDONY, AND AMBER. II II II 420 II cut Rock-crystal... Diamond-fields of the Diamantina. . . . district, Brazil .... „ 36. Occurrence of diamond in...stones ; milk-like, semi-transparent patches (“chalcedony patches ”) ; small internal cracks and fissures |  | | Book | | carats. It was found on the ground by a child in the region of Golconda. The Shah of Persia possesses two magnificent...to him by Oo-dwa-gee, Woon of the ruby mining district. The two best known rubies in Europe, brought... Panar and between that river Wajrah Karrur district. mouth of the Kistnah, and on brated At the...farther east, and on the northern This side district lies of the Kistnah, are the Partial almost...often used to distinguish the diamonds of this region, and sometimes as a designation of all Indian diamonds |  | | Journal (issue) | | Contributes to the mining history of Austria’s Habachtal region, which is regarded as one of the earliest emerald...pink and blue diamonds from the Argyle mine • Chalcedony-epoxy composite imitation of “candy agate” •...features blue sapphire and peridot from the Mogok region of Myanmar. The peridot crystal and cut gem on...history of emerald mining in Austria’s Habachtal region. Our lead article by Wasura Soonthorntantikul and...into the mining history of Austria’s Habachtal region, which is considered one of the early emerald deposits |  | | Book (volume) | | Rock-Crystal, 192 Fine-Grained Varieties, 195 Chalcedony, 195 Structure, 195 Optical Properties, 195...The structural identity of chalcedony with quartz and of calcined chalcedony and quartz with cristobalite...quartz are made to migrate in an electric field, the region cleared of Al acquires smaller cell dimensions...and well-resolved «,%, doublets in the high-angle region. The axial coefficients of thermal expansion are...constant up to at least 1250° in the high-quartz region. The most probable values of the ratio for various |  | | Book (edition) | | as Beryl, of the of in uses and pure Chalcedony, 8.—The indefinite 9. —The of friendly Sardonyx...Sales. with internally, attempts many and Chalcedony Agate, and husband more 39 to III., Chap...secret variety and Romans received mainly Chalcedony, matter colored every stones, in was at... The so-called great quantities Of late, Chalcedony, Carnelian exquisite of all it is polishers...registered. as of and, enigmatical was to the District. explanatory an was shewn mineralogist; |  | | Book (edition) | | experienced mineralogist to say at once from what district a given mineral has been obtained. But these... of the pure and gentle John. 4— The white Chalcedony, of the living James. 5— The friendly S a r...on the fact that the alternate layers o f the Chalcedony, in the Agate Nodule are not equally porous,... exquisite blue dyes have been found for the Chalcedony, by which the varied shades of the more valuable...contrary it is certain that their presence in this region was known to the European eighteenth century |  | | Book (volume) | | cm1 is called the fingerprint region. Usually IR spectrum in this region contains very complicated series...overlapping bands. The importance of the fingerprint region is that each mineral species produces a different...500 to 800 cm1 can be considered as “fingerprint region” sensitive to the composition and the topological...see Fig. 1.9), but generally IR spectrum in this region is characteristic of all these minerals. In IR...(2); Zn-enriched olivenite from Novoveská Huta, Slovakia (3); zincolivenite from Lavrion, Greece (4); Cu-enriched |  | | Book (edition) | | and the remainder are included in Section C. Chalcedony, turquoise, and jade have been transferred to...XXXYV. 307 FAMILY 397 C—ORNAMENTAL STONES CHALCEDONY 401 GREENISH 405 STONES 414 XL. JADE XLI...to crystallization, it is often transformed to chalcedony. CRYSTAL FORM (B) CRYSTAL AND STRUCTURE...contains a strong doublet (5896, 5890 A) in the yellow region. ‘wo corresponding dark lines, D, and D,, are prominent...when dealing with porous material like agate and chalcedony, since any kind of foreign matter may be absorbed |  | Gaines, Richard V., Skinner, H. Catherine W., Foord, Eugene E., Mason, Brian, Rosenzweig, Abraham, King, Vandall T. (1997) Dana's New Mineralogy (8th ed.) Wiley-Interscience. p.1872 | Book (edition) | | Co., Bonanza mine, Trinity Co., Michigan Bluff district, Placer Co., in AK, placers at Fairbanks, Iditarod...and quartz veins at Juneau. In Canada, Noranda district, PQ; Porcupine, Kirkland Lake, and Larder Lake...deposits, ON; Atlin and Caribou, BC; and Klondike district, YT. In Mexico, Altar and Magdalena, SON; Parral...localities, AZ; Calico district, San Bernadino Co., Cerro Gordo(*), Inyo Co., Bodie district, Mono Co., and other...in CA. In Canada, at Cobalt(*) and Thunder Bay district, ON, Highland Bell mine(*), Beaverdell, BC, and |  | | Book | | trat aber gar keine Änderung ein, man fand in der Region des Melaphyrs Menge Diamanten wie vorher. Zwischen...anzunehmen, daß Diamanten hauptsächlich oben in der Region dieser Schiefer im Riff sich finden, wo auch viele...Vorkommen sind unsicher und zweifelhaft. Westliche Region. Die westliche Gruppe besteht aus drei getrennten...im Jahre 1898 1905 Karat Diamanten Südöstliche Region. Das wichtigste Diamantvorkommen, das in der südöstlichen...trockenen Jahreszeit zugänglich. Die diamantführende Region liegt in den Tälern der beiden Quellflüsse des |
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