 | | Journal (article/letter/editorial) | | minerals Article Black Quartz from the Burano Formation (Val Secchia, Italy): An Unusual Gem Franca Caucia 1...27100 Pavia, Italy A.M.I. (Associazione Micromineralogica Italiana), 80100 Naples, Italy Correspondence:...it Abstract: The Burano Formation in Val Secchia in the province of Reggio Emilia is rich in black or...into anhydrite. After the formation of quartz crystals, the Burano Formation was exhumated and rehydrated...to the surface. The black quartzes of the Burano Formation represent an appreciable gemological material |  | | Journal (issue) | | Chabasit vom Mont Blanc | Schwarze Quarze aus der Emilia Romagna | Tropfsteine aus Franken | Fanta siewelten:...zuckerkörniger Gipsmatrix Rio Canalaccio, Val Secchia, Prov. Reggio Emilia, Italien. Sammlung Matteo Beneventi...Stefan Weiß Schwarze Quarze aus der Provinz Reggio Emilia, Italien S. 10 Antonio Miglioli Blauer Chabasit...„Schwarzen Quarze“ aus der italienischen Provinz Reggia Emilia sieht zwar aus wie Marmor, ist aber zuckerkörniger...Stefan Weiß Schwarze Quarze aus dem Val Secchia, Reggio Emilia, Italien Im zuckerkörnigen Gips: Schwarze |  | | Journal (article/letter/editorial) | | geothermal fluids in southern Tuscany (central Italy): an isotope (C, O, H, S) and Rare Earth Element...and 4 tables Abstract: Southern Tuscany (central Italy) is a mining district with epithermal stibnite (Hg...samples showing the paragenesis stibnite, calcite, fluorite, gypsum and of geothermal fluids tapped by the...anomaly in der REE distribution pattern of calcite, fluorite and gypsum are produced by a thermochemical reduction...the substitution of Eu and Ce in the calcite, fluorite and gypsum lattice. Oxygen and hydrogen isotope |  | | Journal (article/letter/editorial) | | cinnabarite and gold mineralization of Tuscany (central Italy) Giulio Morteani & Giovanni Ruggieri & Peter Möller...(Mt. Amiata geothermal area, Southern Tuscany, Italy) show temperatures up to 360°C and pressures of...Ph.D. thesis, Università degli Studi di Firenze, Italy, pp 1–147, 2005). CaCO3- and/or SiO2dominated scales...Georisorse, Via G. La Pira, 4, 50121 Florence, Italy e-mail: ruggieri@igg.cnr.it P. Möller Helmholtz-Zentrum...Keywords Cinnabar . Epithermal . Geothermal fluids . Italy . Mt. Amiata . Stibnite . Tuscany Introduction |  | | Journal (article/letter/editorial) | | gypsum {010} faces is not characterized by the formation of deep etch pits, even at conditions far from...studies on calcite–water systems revealed the formation of crystallographically well-defined etch pits...Additionally, Bosbach et al. (1995) reported that the formation of etch pits with depths of a few monolayers was...dissolution rate and ΔG are operative if etch pit formation C. Fan, H.H. Teng / Chemical Geology 245 (2007)...(Burch et al., 1993). 3.4. Depth of etch pits The formation of etch pits on gypsum cleavage faces was observed |  | | Book (volume) | | Netherlands-Extreme Western Germany, Switzerland, and Italy. Volume V (or Volume III, Part III) will take up...current electoral and administrative departments. In Italy the deposits are listed alphabetically, except for...past, but I accept its usefulness largely in the formation of metal-chloride complexes in the evolution of..., however, seems to furnish an answer to the formation of sulfides and sulfosalts. The only requirement...fluid is to get the metal ions needed for the formation of the ore sulfides to the place where the physico-chemical |  | | Book (edition) | | and John M. Wilson Introduction Characteristic formation history of caver organizations Land trusts, conservancies...429 429 431 433 433 434 52. The Frasassi Caves, Italy Jennifer L. Macalady, Maurizio Mainiero and Diana...Introduction to glaciers Processes of glacier cave formation Englacial caves Subglacial caves Exploration of...71. Karren, surface Joyce Lundberg 67. Iron formation caves: Genesis and ecology Introduction Basic...Ice in caves Geology and morphology of iron formation caves Genesis of IFCS Geomicrobiology of IFCS |
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