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| Vojany, Slovakia) Head of the Department of Natural History, Eastern Slovak Museum, Košice He finished...His Ph.D. study was at the Technical University, Košice (1992). Until 1990, he worked at the Dionýz Štúr...(1983). Ph.D. study at the Technical University, Košice (2000). Since 1980, he was employed in the Herman...Poland (Ewa Kos/.owska) Romania (Gheorghe Udubasa) Slovakia (Rudolf Duda) Ukraine (Orest Matkovs'ky) 31 31...(Ewa Kos/.owska). Romania (Gheorghe Udubasa), Slovakia (Rudolf Duda). Ukraine (Victor Kvasnytsya) 127 |
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| is it microphotograph of such an oldhamite rich region. Troilite, daubreelite, and ferro alabandite, t...modification of the element carbon. ROSE (1863), BREZINA (1889), COHEN (1894), CARTER and KENNEDY (1964)...occurrence of sinoite (Si,N,O) together with tridymite* in the meteorite further indicates that there...the troilite. The enstatite chondrites have * Tridymite was not observed in this specimen of Jajh deh...reheating. Certain minerals such as cristobalite, tridymite, and diamond have been used as pressure indicators |
 | | Journal (article/letter/editorial) |
| whitlockite, farringtonite, sehreibersite, and tridymite from four mesosiderite specimen were made using...were made by Rose (1864), Tschermalc (1885) and Brezina (1904). Prior (1918) assumed a formation from basaltic...whitlockite, schreibersite, troilite, ilmenitc, and tridymite were found in every meteorite sample as shown...Farringtonite Schreibersite Troilite Ilmenite Rutile Tridymite + + -+ -+ (+) (+ ) Estherville Crab Orchard...Cr-free, stoichiometric FeS. 3.6. T r i d y m i t e Tridymite was observed in each mesosiderite associated with |
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| Rose-Tschermak classification w a s gradually modified by Brezina into the system now most commonly used. In this...to confusion. Other modifications introduced by Brezina are also open to criticism as no improvement on...highly ferriferous ' bronzite' (hypersthene), but Brezina, calling the pyroxenes indiscriminately ' bronzite'...the complete development of the Rose-Tschermak-Brezina system, other classifications had been brought...Tschermak's classification, but not the chladnites of Brezina (Shalka, &c) ; i (8) Tschermak's name of diogenite |
 | | Journal (article/letter/editorial) |
| Rose-Tschermak classification w a s gradually modified by Brezina into the system now most commonly used. In this...to confusion. Other modifications introduced by Brezina are also open to criticism as no improvement on...highly ferriferous ' bronzite' (hypersthene), but Brezina, calling the pyroxenes indiscriminately ' bronzite'...the complete development of the Rose-Tschermak-Brezina system, other classifications had been brought...Tschermak's classification, but not the chladnites of Brezina (Shalka, &c) ; i (8) Tschermak's name of diogenite |
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| identity of tridymite and asmanite. I t occurred to the author that the relative solubility of tridymite and...was possible to devise, it was found that of tridymite from Siebenbiirgen 49'63 parts, and of asmanite...atmosphere. 1840.—De Calb Co., Caryfort, Tennessee.1 Brezina points out that in Tschermak's Catalogue - this...4-665 0-395 0-034 0-141 0-037 0-251 98-332 A. Brezina, Sitzber. Jkad. Wiss. 1880, lxxxii. Oct.-Heft. |
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| with minor pigeon&e and olivine and accessory tridymite. Heterogeneous mineral distribution and textural...TERM mesosiderite wa,s used in the Rose-Tschermak-Brezina classification of meteorites to refer to those...containing crystalline olivine and “bronzite” (BREZINA, 1904). The term g~u~u~~~e was used to define stony...been observed as discrete gains. Apatite and tridymite are ubiq~litous accessories. Other silica polymorphs...detected though GRANT (1968) has reported only tridymite in 7 mesosiderites. MARVIN and KLEIN (1964) reported |
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| employed in the old and outmoded Rose-Tschermak-Brezina classification) , the constructional name, and...IN TABLE 5 An examination of the Rose-Tschermak-Brezina classification as it is presented in, e.g., Chap...group, the 3 orthopyroxenes, and the silica a-tridymite, to 0:25; the 7 clinopyroxenes, to 1C:28; and...THESILICA(s) GROUP SiOz “S-aquartz bs-pquartz “d-a-tridymite = as- aS”-a-cristobalite manite as’-p- tridymi...THE PLAGIOCLASE FELDSPARS (f) THE SILICA(s) a -tridymite as’ SiOz (= “asmanite”) SC: 3 1 0:25 NOTESTO |
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| a red heat with hydrogen ing alloy sulphide. Tridymite.-This mineral has been positively identified in...silica and gave it the name of asmanite. Since tridymite is now known, however, to exhibit biaxial characters...respects, they are generally considered identical. Tridymite occurs in meteorites in the form of rounded grains...made to be should reference these, of Meunier,' Brezina" or Wiilfing.3 A few general observations may be...(82 kilos), of meteoritic matter, bronzite and tridymite In the group of mesosidare associated with the |
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| siderable height above the Earth’s surface—the region of delay (Krinov, 1961). Below this point, the...Plowever, the meteorite passes rapidly through this region and below the point where it has completely lost...Study of Table 3 shows that within a specific region the recognition and recovery of meteorites depends...of only 6 meteorites from the whole of China, a region certainly comparable to India and Pakistan in respect...April-July period the Earth may pass through a region which is comparatively densely populated with meteorites |
 | | Report (chapter) |
| silica, which he named asmanite (later called tridymite). He was the first researcher to recognize enstatite... These included several trades with Aristides Brezina (18481909), custodian of the collection in Vienna...classification system for chondrites was the Rose-Tschermak-Brezina (RTB) classification, which reached its final form...meteorites that had been found in the Nullarbor region of Western Australia, where the add climate ensured...collection of meteorites found in the Allan Hills region of Antarctica in 1988 (collected by a group of |
 | | Report (issue) |
| and structure, a subdivision later extended by Brezina, until in his final presentation (1904) no fewer...classification, commonly known as the Rose-Tschermak-Brezina classification, was generally adopted and is still...slight excess of SiO, in the form of quartz, tridymite, or cristobalite. The enstatite chondrites are...MgO-FeO-Si0,. Bull. Geol. Soc. Amer., vol. 60, pp. Brezina, A. 1904. The arrangement of collections of meteorites |
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| Chromite Amorphouscarbon Diamond Daubreelite Tridymite Lawrencite Magnetite Oldhamite Hydrocarbons A...the mineral as a fused feldspar, while Groth and Brezina consider it a distinct species allied to leucite...have been observed which have been referred by Brezina to the hexagonal and by Linck to the isometric |
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| .......................................... 52 Slovakia ( Rudo lf Ducfa) ...............................(Ewa Koszowska). Ro mania (Gheorghe Uduba~a), Slovakia (Rudolf Ducfa). Ukraine (Victor Kvasnytsya) Native...wa especially rich in specimens from the Banal region and Gutiii Mts. (fu loppite was named in his honor)...detailed. unified mineralogical encyclopaedia of the region had been planned by the Commi!.sion on Mineralogy...Verde§ (Gold Museum. Brad) - for photography. Slovakia: Eva Sitasova (Eastern Slovak Museum. Kosice) |
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| nickel-h'on, troilite, chromite, ilmenite and tridymite. The pyroxene--plagioclase achondrites can be...composition of Ansi, i.e. a calcium-rich bytownite. Tridymite: A few ~ a i n s of this mineral were found in...there is a slight excess of SiO 2 in the form of tridymite. The appearance of olivine in the norm is a consequence...plagioclase is replaced b y the glassy form maskelynite; BREZINA (1904) elevated it to a distinct type, which he |
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| case. Cohen (1905: 302) gave a description, and Brezina & Cohen (1886-1906 : plate 35) presented two photomacrographs...cuneiform or platelike crystals forming imperfect Brezina lamellae, usually 0.2-0.4 mm wide, 14 mm long,...made inquiries about meteoric phenomena in the district. He collected wellsubstantiated eyewitness reports...2 x 0.1 mm in size. They appear to be oriented Brezina lamellae, but the examined sections were too small...described by Cohen (1905: 384), and figured by Brezina & Cohen (1886-1906: plate 39). Mauroy (1913) presented |
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| Guejarite: a New Mineral Species discovered in the District of Guejar, in the Sierra-Nevada, Andalusia: by...Zinc-furnaces and A. STETMEK into Zinc-spine11 and Tridymite. By H. SCHULZE (Jahrb.f. Mi%., 1881, 1,Mem. 120--160)...zinc-spinell, and crystals and crystalline groups of tridymite. The g l a s s is colourless, yellowish-brown...i l i c a : A1203,Si02 ZnO = ZnO,AI20, SiOz. Tridymite.-The silica set free in the reaction just mentioned...crjstals, which exhibit the characters of native tridymite, such as occurs in the trachyte of Endobenye and |
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| late position in the crystallization sequence. Tridymite (t) occurs as irregular grains that have crystallized...grain at the bottom can be traced upward into a region texture. The where it has been partially replaced...plagioclase and pigeonite, with srnail amount of tridymite. Fig. 10. Bialystok, plane light. Various elasts...consist of clinopyroxene, plagioclase, and minor tridymite in aggregates of grains ranging in size from about...olivine (Fig. 11) are observed in Estherville. Tridymite in coarse grains is associated with these textures |
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| Sphalerite Spinel Stanfieldite Sulfur Taenite Tridymite (Mg,Fe)6Si4O10(OH)8 Accessory in Ce and Ae Common...Tschermak (6), who was a superb petrographer, and Brezina (7), who eventually subdivided the chondrites into...into more than 30 classes. The Rose-Tschermak-Brezina classification was widely used by students of meteorites...superficial basis of much of the Rose-Tschermak-Brezina classification had been pointed out by Prior (3)...virtually no olivine, free silica as quartz, tridymite and cristobalite in small amounts, approximately |
 | | Journal (article/letter/editorial) |
| Macroscopic phosphides (hieroglyphic or star-shaped and Brezina lamellae) form from the liquid if the meteorites...meteoritic occurrences of silica minerals (quartz, tridymite, and cristobalite) are reported in the literature...(diogenites) Howardites and Eucrites* Quartz Tridymite Cristobalite 2 1 14 15 3 3 2 7 4 Total...reported: Atlanta (tridymite), Barratta (quartz), Bath (cristobalite), Bishopville (tridymite), Cachari (tridymite)...Springs (tridymite), Daniel's Kuil (tridymite), Hainholz (tridymite), Johnstown (tridymite), Khairpur |
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| photograph of the exterior was given by Howell (1890). Brezina (I896 : 280), in describing the Vienna specimens...Toluca (Michigan fragment) Milly Milly , Murchison District, Western Australia 26°7'S, 116°40'E Medium octa...really authentic Misteca material (see, e.g., Brezina I896: 268, 273,275, 299). As this study shows,...Meunier I884: I2I and figure 4; I893a: 52; Brezina I896: 275). Brezina (I 896: pia te 9, figures I 7 and I8)...Yanhuitlan mass. In I856 and following years (Brezina I885: 24I, 262) specimens of authentic Misteca |
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| a feature common to many of the valleys in the region. Some of the mineralized clefts and caverns are...also the site of a centuries-old copper mining district, more or less dormant since the middle 1800s....Alps, and a number of localities existed in the region where cop per ores could be found. Many settlements...northwest. The cultural heritage now discernible in the region stems from this Germanic in fluence of the Middle...locality cir170 culating in Vienna, Aristides Brezina, associated with the Imperial Mineral Cabinet in |
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| modification and enlargement by Tschermak (1883) and Brezina (1904), this system now forms the basis of modern...Rose-Tschermak-Brezina classification scheme and its more recent equivalents^^\ Rose-Tschermak-Brezina Alternatives...CV chond. Table 1.1. —cont. Rose-Tschermak-Brezina Alternatives used here Prior-Mason Enstatiteanorthite...Lodran). Additional class: siderophyre (bronzite-tridymite stony-iron, Steinbach). **°'Now recognised to...explosion occurred in a sparsely 16 populated region in Siberia near the Tunguska River. The force of |
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| of had а fallen Zhigailovka, in the former district of Kharkov. According to the test= imony of his...which had fallen in the former Semipalatinsk district on May 9 1840 (22). Major investigation of...the village of Tomakovka, former Ekaterinoslav district, which occurred The study was made by an astronomer...should be mentioned: Czech scientists Chermak and Brezina; French - Daubrée and Meunier; German - Reichenbach...-which had fallen on February 27 1918 near the town district. In 1921 a Meteorites of Kashin, former Tversk |
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| pools of impact-produced melt in the near-surface region of a chond~ti~ parent body, The positive As-Ni...similarities in the metal structure illustrated in BREZINA and COHEN( 1886- 1906) and those in genuine V....silicate free. Accessory tiny s&ate grains (mainly tridymite) seem to reflect exsolution of oxides previously...in different bodies though in the same nebular region. We see no advantage to incorporating such complexities |
