 | | Journal (article/letter/editorial) | | Dezember 2001 The origin of colour of chrysoprase from Szklary (Poland) and Sarykul Boldy (Kazakhstan) Micha...M. (2001): The origin of colour of chrysoprase from Szklary (Poland) and Sarykul Boldy (Kazakhstan). –...Abstract: Samples of chrysoprase from the chrysoprase “type” locality in Szklary, Poland and from Sarykul...colour. The allochromatic “apple-green” colour of chrysoprase results from nanometer-size inclusions of aggregates...inclusions containing Fe3 + ions modify the chrysoprase green colour by adding yellowish hue. The bluish |  | | Journal (article/letter/editorial) | | “kerolite–pimelite” series and the colouring agent of Szklary chrysoprase, Poland Zdeňka Čermáková1 · David Hradil1,2...Abstract Green clay and chrysoprase samples from the Ni-laterite deposit in Szklary, Poland, were studied by...Subsequently, the XRD and EMPA analyses of Szklary chrysoprase indicated that chrysoprase’s colouring agent...UV–VIS–NIR spectroscopies. In addition, the Szklary chrysoprase, which has been quarried since the Middle...view. Keywords Pimelite · Interlayer water · Chrysoprase · Colourant · X-ray diffraction · Thermal analysis |  | Sojka, Zbigniew, Witkowski, Stefan, Żabiński, Witold, Dyrek, Krystyna, Bidzińska, Ewa (2004) TPR, EPR and UV-Vis studies of Ni(II) speciation in chrysoprase. Neues Jahrbuch für Mineralogie - Monatshefte, 2004 (1) 11-25 doi:10.1127/0028-3649/2004/2004-0011 | Journal (article/letter/editorial) | | EPR and UV-Vis studies of Ni(II) speciation in chrysoprase ‚ Zbigniew Sojka, Stefan Witkowski, Witold Zabi...EPR and UV-Vis studies of Ni(II) speciation in chrysoprase. – N. Jb. Miner. Mh. 2004 (1): 011– 025; Stuttgart...10Dq = 8897cm –1 and B = 953 cm –1. Key words: chrysoprase, Ni-speciation, TPR, EPR, UV-Vis. Introduction...Introduction The nature of NiII in the chrysoprase, a fine-crystalline variety of silica (chalcedony), was discussed...authors. It is well known, that the formation of chrysoprase is usually ascribed to lateritic weathering of |  | | Journal (article/letter/editorial) | | Article Microstructure and origin of colour of chrysoprase from Haneti (Tanzania) Heribert A. Graetsch With...With 4 figures and 1 table Abstract: Chrysoprase from Haneti, Tanzania, was investigated by optical...spectroscopy and X-ray powder diffraction. Different to chrysoprase from other sources, the green colour is caused...varieties of chalcedony, the microstructure of chrysoprase is characterised by planar lattice faults, a...crystallinity of chrysoprase from Haneti is higher than from many other sources. Key words: chrysoprase, gaspeite |  | | Journal (article/letter/editorial) | | held in Poland. Back in 2011, the first Mindat conference took place in Lwówek Śląski, Poland, where more...were introduced to the minerals and culture of Poland (Petrov 2011). This time the conference celebrated...birthday of Lwówek Śląski. Lwówek Śląski is located in Lower Silesia and has a population of about nine thousand...Hunting Adventure. Figure 2. Map of southwest Poland at its border with Germany and the Czech Republic...from the United States, Canada, United Kingdom, Poland, Germany, Spain, and Hong Kong. Leslie Gordon photo |  | Klemme, Stephan, Berndt, Jasper, Mavrogonatos, Constantinos, Flemetakis, Stamatis, Baziotis, Ioannis, Voudouris, Panagiotis, Xydous, Stamatios (2018) On the Color and Genesis of Prase (Green Quartz) and Amethyst from the Island of Serifos, Cyclades, Greece. Minerals, 8 (11) 487 doi:10.3390/min8110487 | Journal (article/letter/editorial) | | quartz is commonly referred to as chrysoprase. The color of chrysoprase varies from olive-green to pale...pale sea-green [3]. As far as we know, such chrysoprase has been described from Australian serpentinites...veins in lower Silesia [14]. Rossman concludes in his review [3] that the color of chrysoprase is caused...Ni-silicates [3]. Recent studies of chrysoprase samples from Szklary (Poland) and Sarykul Boldy (Kazakhstan)...slightly higher. Subsequently, the cores contain lower MgO and (3.8 wt %) and much less Al2 O3 (0.3 wt |  | Jiang, Yuansheng, Guo, Ying, Zhou, Yufei, Li, Xiang, Liu, Simin (2021) The Effects of Munsell Neutral Grey Backgrounds on the Colour of Chrysoprase and the Application of AP Clustering to Chrysoprase Colour Grading. Minerals, 11 (10) 1092 doi:10.3390/min11101092 | Journal (article/letter/editorial) | | Backgrounds on the Colour of Chrysoprase and the Application of AP Clustering to Chrysoprase Colour Grading Yuansheng...Munsell Neutral Grey Backgrounds on the Colour of Chrysoprase and the School of Gemmology, China University...Correspondence: guoying@cugb.edu.cn Abstract: Chrysoprase is a popular gemstone with consumers because...effective background of the Munsell Chart for chrysoprase colour grading under a 6504K fluorescent lamp...coloured gems for the first time. Forty gem-quality chrysoprase samples from Australia were studied using a UV-VIS |  | | Journal (issue) | | Ruby-Sapphire Review Nanocut Plasma-Etched Diamonds Chrysoprase from Tanzania Demantoid from Italy THE QUARTERLY...& NEW TECHNIQUES ___________ pg. 267 271 Chrysoprase and Prase Opal from Haneti, Central Tanzania...and gemological characteristics of Tanzanian chrysoprase and green prase opal are revealed. 280 Demantoid...sapphire. Since the mid-1990s, large deposits of lower-quality ruby have been found and worked at Mong...in Bangkok, though the color tended to be much lower in quality than that of traditional Mogok material |  | | Journal (article/letter/editorial) | | orogen which extended across three continents from Poland, through Morocco to the USA (Fig. 2). The Variscides...rocks which formed the Precambrian through the Lower Carboniferous, when the Visean folding put an end...extension was at its maximum during the Devonian and Lower Carboniferous. Basic submarine volcanic activity...Ruhr District, Germany, to the Upper Silesian Coal Basin, Poland. The basin fill began in a flysch-type...Feist-Burkhardt et al., 2008) (Table 2). During the Lower Jurassic (Liassic) dark claystones, black shales |  | | Journal (article/letter/editorial) | | can consider that weathering processes occur at lower temperature than hydrothermal processes. Biological...431 is an opal-CT from Virgin Valley, Humboldt County, Nevada, USA. Several authors have proposed a hydrothermal...we shifted the position toward both higher and lower wavenumbers avoiding the neighboring absorption...structure: three chalcedonies (including one “chrysoprase”, i.e. green chalcedony), 11 opal-A and 24 opal-CT...Guadalupana, Nayarit, Mexico Hydrothermal Humboldt County, USA Hydrothermal Wegel Tena, Ethiopia Weathering |  | | Journal (issue) | | chalcedony, has many varieties of which the green Chrysoprase, known from several localities, is the most valuable...oldest known commercial Chrysoprase deposit was near Szklary in today's Poland, where the first written...nineteenth century. The most important recent Chrysoprase deposits were discovered in the 1960s in Queensland...1981). Green opal very similar to Chrysoprase is known from Szklary and from Dodoma in Tanzania, where...1976). Opal can be distinguished by means of its lower refractive index. Occurrences of chrome chalcedony |  | | Journal (issue) | | to the c-axis, the c-axis runs diagonally from lower left to upper right. Crossed polarizers. 20x. 473...(reddest) stones. The chrome values are slightly lower than those reported by Hughes (1990) for Mangari...grains Plate 12. 12. Intergrowth of clustered in lower left hand corner of the plate. Sample 9. Field of...440 —chalcedony, dendritic, from Mt. Isa, 305 —Chrysoprase from Marlborough, Queensland, 444 —Cowell jade...—chrysoberyl crystals from Pancas, Espirito Santo, 242 —Chrysoprase: from Goiâs, bunsenite in, 443; fluorescent in |  | | Journal (issue) | | represent residual solutions which delivered the lower fold axes of the carbonaceous shales but light elements...is have been examined by the authors. Cracks are lower (2. *6—3.*4 wt.%) than in Al-rich opals. In artificially...K.A., MALISA, E.J., 1990. Gem- quality chrysoprase from Haneti-Itiso area, central Tanzania. Bulletin...showed that the chrysoprase consists mainly of a-quartz and some opal-CT. The chrysoprase has RI 1.548-1...mean SG 2.56. Microscopically the Tanzanian chrysoprase consists of spherules which are highly disordered |  | | Journal (issue) | | peraluminous pegmatoids in the upper mantle or lower crust, then, bearing in mind the loch, rock and...later found in the River Vishera (1939), Basin of lower Tungusska (1948), River Vilyuy (August 1949), River...alluvial deposits were found in the basin of the lower Tunguska river, and Sobolev's plan started to work...FIG. 12. Taiga (deciduous forest), Lena River, Lower Yakutia. J.Gemm., 1984, XIX, 4 361 The Siberian...awareness of the natural stone and created a secondary lower-priced market. So there should be no cause for alarm |  | | Journal (issue) | | dunklen Grün, das sehr genau mit der Farbe guter Chrysoprase aus Schlesien oder Australien übereinstimmt....Gemengtei1 der Chrysoprase gefunden werden konnte. Die Farbe schlesischer Chrysoprase wird Beimengungen...und schlesischer Chrysoprase sowie die hier beschriebenen grünen Opale und Chrysoprase aus Tansania röntgenographisch...in thc \Vcathcring Zone ofSerpentinites front Szklary (lowcr Silcsia). - Bull. Acad. Pol. Sei .. Scr |  | El Mendili, Yassine, Orberger, Beate, Chateigner, Daniel, Bardeau, Jean-François, Gascoin, Stéphanie, Petit, Sébastien, Perez, Olivier (2022) Occurrence of SiC and Diamond Polytypes, Chromite and Uranophane in Breccia from Nickel Laterites (New Caledonia): Combined Analyses. Minerals, 12 (2) 196 doi:10.3390/min12020196 | Journal (article/letter/editorial) | | attributed to ultrahigh-pressure crystallization in the lower mantle. The SiC and diamond polytypes are inherited...attributed to a three-stage process: formation in the lower mantle, transport into the upper mantle peridotite...of Upper Carboniferous to Lower Cretaceous age, and Late Cretaceous to Lower Tertiary allochtonous terranes...terranes is the New Caledonia ophiolite [24–26]. The lower part of this ophiolite covers large terranes of...world-class nickel laterite ore deposits in the lower part of the regolith. These nickel deposits represent |  | | Book | | results in a pseudo-symmetry, i.e. crystals of lower symmetry are twinned in such a way that they form...between that of the sample and that of the next lower grade. In this case we consider the hardness to...Different scratch hardness on kyanite 20 somewhere lower grade adding a half-grade to it. Although the determination...fibrous and porous aggregates often seem to have a lower hardness because of the blank spaces between individual...arsenopyrite FeAs» arsenopyrite Ztoty Stok, Poland in ore veins Variety of lollingite LEUCOPYRITE |  | | Journal (issue) | | Riddle, Douglas County in Oregon, en Porterville, Exeter en Lindsay in Tulare County, California. De...voor deze historische plaats is: Groeve Marta, Szklary, Zabkowice Slanskie, Polen. Esoterische eigenschappen... I hereby want to thank Craig White, CEO of Chrysoprase Mines of Australia, for his contributions and | | | Book | | results in a pseudo-symmetry, i.e. crystals of lower symmetry are twinned jn such a way that they form...that of the next lower grade. In this case we consider the hardness to be of the lower grade adding a half-grade...fibrous and porous aggregates often seem to have a lower hardness because of the blank spaces between individual...arsenopyrite arsenopyrite LOLLINGITE FcAs. Zloty Stok, Poland 5-5.5 7.1 7.4 good brittle needle-shaped, fibrous...tlollingite with reduced content of As) Zloty Stok, Poland metallic opaque 5 6.7 good brittle, uneven |  | | Journal (issue) | | the same reasons, higher film speed equates to a lower quality of color. Between low-speed, fine-grain...were discovered at Mont Saint-Hilaire, Rouville County, Quebec, Canada, during the mid-1960s. However...on the other hand, had lower iron contents (1–5 wt.% FeO) and, accordingly, lower refractive indices of...those facets (see, e.g., figure 17). This area of lower luster was large enough that we were able to obtain...also the gas bubbles in the filled area on the lower right. Magnified 15×. GEMS & GEMOLOGY SPRING 2003 |  | | Report (edition) | | .................................. 130 ix Chrysoprase ...................................................................................... 130 Chrysoprase in Western Australia ......................................... 131 Gemmological testing of chrysoprase ...............................................Newman region ...................... 130 Polished chrysoprase specimens and cabochons from the Yerilla mine.......................................... 132 Chrysoprase from the Eucalyptus mine, Leonora region ... |  | | Journal (issue) | | across these in the trade today The dispersion is lower than Figure 2: A close-up view of a bee insect...commercially leakage of X-rays by an upper and lower lead produced (Walker, 1991). glass window. Microscopic...with polybaric fractionation. Less likely is a lower mantl e source for the DUPAL Pb isotope signa ture...round brilliant diamond. In particular, star and lower girdle facet lengths could have a noticeable effect...The o ri g in of colour of ch rysop ras e from Szklary (Po lan d ) and Sarykul Boldy (Kazakhstan). M. |  | | Report (edition) | | ....................................... 134 Chrysoprase....................................................................................... 135 Chrysoprase in Western Australia...........................siliceous nodules of mixed green chalcedony and chrysoprase from the Warrawanda area........... 137 Polished...Sylvania Inlier................... 137 Polished chrysoprase specimens and cabochons from the Yerilla mine... Boyce Creek area...................... 138 Chrysoprase from the Eucalyptus mine, Leonora region.... |  | | Book | | Such metals as Cu, Ag and Zn often pass from a lower oxidation zone to a deeper cementation zone where...is harder and the test may proceed to the next lower grade. Not much force on the scratching point is...aggregates or weathered minerals have usually a lower hardness than the single or unaltered crystals of...For instance, hematite (hardness 6) will have a lower hardness in the radiating or earthy form than in...some differences. Transparency may also become lower because of mechanical effects - small rifts often | | | Book | | Such metals as Cu, Ag and Zn often pass from a lower oxidation zone to a deeper cementation zone where...is harder and the test may proceed to the next lower grade. Not much force on the scratching point is...aggregates or weathered minerals have usually a lower hardness than the single or unaltered crystals of...For instance, hematite (hardness 6) will have a lower hardness in the radiating or earthy form than in...some differences. Transparency may also become lower because of mechanical effects — small rifts often |
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Szklary Chrysoprase Mine, Szklary, Gmina Ząbkowice Śląskie, Ząbkowice Śląskie County, Lower Silesian Voivodeship, Poland