 | | Journal (article/letter/editorial) | | University of Innsbruck, Innrain 52f, A-6020 Innsbruck, Austria Australian National University, College of Physical...Materials, University of Salzburg, Jakob-Haringer-Strasse 2a, A-5020 Salzburg 2 Abstract Heat capacity...Al-F-bearing titanite are presented that yield the standard entropy S°298.15 of F-Al-titanite CaAlFSiO4...petrogenetic grids involving F-bearing minerals and titanite solid solutions in the system CaTiSiO4O–CaAlSiO4F...F-system. Keywords: F-Al titanite, PPMS, DSC, standard entropy Introduction Titanite [Ca(Ti,Al,Fe3+)SiO4(O |  | | Journal (article/letter/editorial) | | Materialwissenschaften, Universität Salzburg, Hellbrunnerstr. 34, 5020 Salzburg, Austria A. C. Withers Department...white kyanite sample from Central Alps, Styria, Austria, was used for the phase equilibrium experiments...experiments to determine the melting point of titanite indicate that at >1,973 K, less than 40 K increase...heat capacity option of the PPMS at Salzburg University in Austria. A powdered Si-wadeite sample (21.4...description of error estimation was given by Dachs and Geiger (2006). As shown in Table 1, the entropy of Si-wadeite |  | Katerinopoulou, A., Katerinopoulos, A., Voudouris, P., Bieniok, A., Musso, M., Amthauer, G. (2009) A multi-analytical study of the crystal structure of unusual Ti–Zr–Cr-rich Andradite from the Maronia skarn, Rhodope massif, western Thrace, Greece. Mineralogy and Petrology, 95 (1) 113-124 doi:10.1007/s00710-008-0023-4 | Journal (article/letter/editorial) | | Physics, University of Salzburg, Hellbrunnerstraße 34, 3 Salzburg 5020, Austria A. Bieniok e-mail: anna...(Ti- and Ti–Cr–Zrrich varieties of andradite, titanite and perovskite), which were replaced by an assemblage...recrystallized monzogabbro containing newly formed titanite, Ti-bearing andradite, wollastonite and apatite...and is characterized by initial deposition of titanite, succeeded by Ti-bearing andradite, perovskite...and 750 cm−1 (Fig. 6). According to Kolesov and Geiger (1998), the band at 350 cm−1 can be assigned to |  | | Journal (article/letter/editorial) | | capacity measurements and new entropy data for titanite (sphene): implications for thermobarometry of...Abstract The accepted standard state entropy of titanite (sphene) has been questioned in several recent...range of 110–120 J/mol K. The heat capacity of titanite was therefore re-measured with a PPMS in the range...range 5 to 300 K and the standard entropy of titanite was calculated as 127.2 ± 0.2 J/mol K, much closer...The standard Gibbs free energy of formation of titanite, -2456.2 kJ/mol (DH°f = -2598.4 kJ/mol) was calculated |  | | Journal (article/letter/editorial) | | Gem Collectors, carried the following paragraph. "I am taking the liberty of forwarding you a specimen of...sphalerite is a lead-silver mine in the Silverton district, San Juan County, Colo. The mineral occurs as...Eugene VanderWender, Harrington, Kent County, Del. District of Columbia—French Morgan, of Washington, D. C...another very unusual find of petrified wood, in the District this time, and within a half mile of where I live...crystallized malachite, with calcite, occur in the Valley View copper mine, So. Skull Canyon near Winsper |  | | Journal (article/letter/editorial) | | + biotite + phengite + CaFe-garnet + epidote + titanite. Garnet contains up to 55 mole per cent ofgrossular...location of the studied areas (Piantonetto valley and Bardoney valley). Anorthite reactions by a thermodynamic...occurrence ofundeformed zones in the Piantonetto valley allows to distinguish two main types of granitic...(phengite), epidote, garnet II (50-200 Itm) and titanite. Synkinematic assemblages of the two granite types...valleys (Fig. 2). In the P i a n t o n e t t o valley, the A l p i n e d e f o r m a t i o n is very |  | | Journal (article/letter/editorial) | | thermodynamic properties Edgar Dachs,* Charles A. Geiger, and Artur Benisek Fachbereich Materialforschung...Mineralogie, Universität Salzburg, Hellbrunnerstrasse 34, A-5020 Salzburg, Austria Abstract The heat capacity...00/DOI: http://dx.doi.org/10.2138/am.2012.4163 reviewed and evaluated by Geiger (1999). Over time, more accurate...1971; Murad and Wagner 1987; Anovitz et al. 1993; Geiger and Rossman 1994; Zherebetskyy et al. 2012). All...thus receiving much current attention (see reviews of Geiger 2004, 2008). Several aspects still need |  | | Journal (article/letter/editorial) | | UniversitaÈt Salzburg, Institut fuÈr Mineralogie, Hellbrunner Str.34, 5020 Salzburg, Austria Tel.: +43-662-80445407...of the Institute of Mineralogy, University of Salzburg. All samples were characterised using a Siemens...phyllosilicate, smectite, apatite and a TiO2-polymorph or titanite. The sum of K2O, Na2O and CaO of a chlorite analysis...zur FoÈrderung der wissenschaftlichen Forschung, Austria, project no. P10471 GEO. References Berman RG...Contrib Mineral Petrol 89: 168±183 Bosenick A, Geiger ChA, Cemic L (1996) Heat capacity measurements |  | Dachs, E., Geiger, C. A., Benisek, A., Grevel, K.-D. (2012) Grossular: A crystal-chemical, calorimetric, and thermodynamic study. American Mineralogist, 97 (8) 1299-1313 doi:10.2138/am.2012.4047 | Journal (article/letter/editorial) | | and thermodynamic study Edgar Dachs,1 Charles A. Geiger,1,* Artur Benisek,1 and Klaus‑Dieter Grevel2,3...Mineralogie, Universität Salzburg, Hellbrunnerstrasse 34, A‑5020 Salzburg, Austria 2 Institut für Geowissenschaften...0003‑004X/12/0809–1299$05.00/DOI: http://dx.doi.org/10.2138/am.2012.4047 A major issue concerns the value of grossular’s...1979). In a fourth calorimetric study, Dachs and Geiger (2006) reinvestigated the same synthetic grossular...ties of grossular are reviewed and discussed in Geiger (1999). The calorimetric results show that the |  | Maftei, Andreea Elena, Buzatu, Andrei, Damian, Gheorghe, Buzgar, Nicolae, Dill, Harald G., Apopei, Andrei Ionut (2020) Micro-Raman—A Tool for the Heavy Mineral Analysis of Gold Placer-Type Deposits (Pianu Valley, Romania) Minerals, 10 (11) 988 doi:10.3390/min10110988 | Journal (article/letter/editorial) | | Mineral Analysis of Gold Placer-Type Deposits (Pianu Valley, Romania) Andreea Elena Maftei 1 , Andrei Buzatu...monazite, xenotime, rutile, anatase, cassiterite, titanite, barite). Even complex solid solution series,...intensive metamictization, particularly zircon and titanite. Raman peak features, such as shape, symmetry...accumulations. 2. Geological Setting The Pianu Valley is renowned in Romania for its important alluvial...today in the environs of Pianu de Sus [31]. Pianu Valley takes an outstanding position as the only site |  | Diella, Valeria, Bocchio, Rosangela, Marinoni, Nicoletta, Caucia, Franca, Spalla, Maria Iole, Adamo, Ilaria, Langone, Antonio, Mancini, Lucia (2019) Garnets from Val d’Ala Rodingites, Piedmont, Italy: An Investigation of Their Gemological, Spectroscopic and Crystal Chemical Properties. Minerals, 9 (12) 728 doi:10.3390/min9120728 | Journal (article/letter/editorial) | | precious gemstones in the traditional costumes of the valley and as a sign of engagement. The grossular Minerals...precious gemstones up to 2costumes cm in size, are valley generally in of rodingites and show a color from...end member, is also“topazolite”, present in this valley but small size end of the crystalsisprevents theirinuse...layersand andlenses lensesalong alongthe thevalley, valley, representing the main Maletto monograph of of...Geological Setting Val d’ Ala (Figure 2) is an east valley underlain by metaophiolites of the Piemonte Zone |  | | Journal (issue) | | .......................................... 510 GEIGER-MUELLER COUNTER TUBE ............................rock hunt through Rocks and MiMl'UI Editor R&M: I am very happy to renew my subscription to Rocks and...west. One of these was pointed for the Connecticut Valley and cam e to be known a, the Bay Pach. It follo...Idria is a town nearby and is often given as a district. Saranovskaya is the correct occurrence whereas...districts without exact localities. In the Idria district, for instance, are several uvarovice occurrences |  | | Journal (article/letter/editorial) | | 45th St., New York 17, N.Y. If you are interested I am sure he would give you the information on the finess...in the saw and cut a slice and polished it. I can see some crystals in it, also a metallic mineral. What...quarry ¡n Wilmington, New Castle Co., Del. FLORIDA—"I am an amateur lapidary and piscatologist and live in...minerals, and therefore I do mostly fossil work. "I am sending you a few of the items I have found in Nokomis...Ind. "I am sending you another box of minerals from Indiana so you will not think that I am just a flash |  | Gadas, Petr, Novák, Milan, Talla, Dominik, Vašinová Galiová, Michaela (2013) Compositional evolution of grossular garnet from leucotonalitic pegmatite at Ruda nad Moravou, Czech Republic; a complex EMPA, LA-ICP-MS, IR and CL study. Mineralogy and Petrology, 107 (2) 311-326 doi:10.1007/s00710-012-0232-8 | Journal (article/letter/editorial) | | Kristallographie, Althanstraße 14, 1090 Wien, Austria M. Vašinová Galiová Department of Chemistry, Masaryk...U-rich zirconolite, and gittinsite. Accessory titanite in several paragenetic and morphological types...chlorite, prehnite, pumpellyite-(Al), niobian titanite and Nb,Ta,Ti-oxide minerals (niobian rutile, fersmite)...Aines 1991; Hösch and Langer 1996; Kolesov and Geiger 2005). The background consisted of a single wide...assemblage of epidoteclinozoisite, albite, quartz and titanite is developed along the contacts of garnet and |  | Zhang, M., Salje, E. K.H., Carpenter, M. A., Wang, J. Y., Groat, L. A., Lager, G. A., Wang, L., Beran, A., Bismayer, U. (2007) Temperature dependence of IR absorption of hydrous/hydroxyl species in minerals and synthetic materials. American Mineralogist, 92 (8) 1502-1517 doi:10.2138/am.2007.2586 | Journal (article/letter/editorial) | | Wien—Geozentrum, Althanstrasse 14, A-1090 Wien, Austria 7 Mineralogisch-Petrographisches Institut, Universität...species (OH) in nominally anhydrous minerals (e.g., titanite), ferroelectric crystals (KTa1–xNbxO3, KTN), layer...hydrous garnet, pyrophyllite, talc, sericite, titanite INTRODUCTION Hydrous and hydroxyl species in...cam.ac.uk 0003-004X/07/0809–1502$05.00/DOI: 10.2138/am.2007.2586 Determinations of the frozen-in hydrous...experimental results for crystalline and metamict titanite (Salje et al. 2000; Zhang, M. et al. 2000, 2001) |  | | Journal (issue) | | Newsletter $3.00 A New Occurrence of Very Large Titanite Crystals at Lake Tahoe, Nevada Martin Jensen '--...actinolite and titanite may also occur. It was from one of these pegmatites that the large titanite crystals...(Continues on page 3) Mineral News ----2 Lake Tahoe Titanite Crystals (Continued from page l) A previou discussion...John Rakovan (Mineralogy of the Hansonburg Mining District. Bingham, NM and A Mineralogist in Japan), Joe...the Olinghouse mine, precious opal from Virgin Valley, and thumbnail to toenail size platy dendritic |  | Nasdala, L., Wildner, M., Wirth, R., Groschopf, N., Pal, D. C., Möller, A. (2006) Alpha particle haloes in chlorite and cordierite. Mineralogy and Petrology, 86 (1) 1-27 doi:10.1007/s00710-005-0104-6 | Journal (article/letter/editorial) | | und Kristallographie, Universit€at Wien, Vienna, Austria 3 GeoForschungsZentrum, Potsdam, Federal Republic...simulations, molecular dynamics). For more details see, for instance, the comparative discussion by Ewing...muscovite; accessory minerals include albite, epidote, titanite, tourmaline, magnetite, ilmenite, uraninite, chalcopyrite...exhumation would suggest (Dunlap and Teyssier, 1995; see also review of Collins and Shaw, 1995). A polymetamorphic...count rates were corrected using a ðZÞ routine (see Armstrong, 1991). Raman spectra were obtained under |  | | Journal (issue) | | .... 124 AN EPSOMITE OCCURRENCE IN THE TINTIC DISTRICT, UT AH. By Fred F. Mei.rsne,· ..................PublicityChairman 817 Mulford St., Evanston, Ill. (See full page ad in this issue, p. 183) BIG POW-WOW IN...about 2 miles north of the old fortess at Vaxholm (see map). A few hundred yards up from the small boat...found in thin sections of very pure magnetite, titanite as idiomorphic crystals in the ore. The amount...movements. The other chief iron ore body in this district is Gellivare located some distance to the south |  | | Journal (article/letter/editorial) | | [e.g., Ködnitz Valley, Eastern Alps; Abrecht (1990); Graubünden, Central Alps; Geiger (1948); Praborna...Sb, the rare-earth elements (REE), and Be (e.g., Geiger 1948, Abrecht 1990, Basso et al. 1992, Perseil...domain. The Turtmanntal, a tributary to the Rhone Valley in Canton Wallis, Western Switzerland, belongs...et al. 1987; Fig. 1). In the upper part of the valley, the pre-Mesozoic crystalline rocks of the “Ensemble...transmitted light, parallel polars. For abbreviations, see Table 1. mn-rich assemblages in the barrhorn unit |  | | Journal (article/letter/editorial) | | constrained by apatite (U–Th)/He 1342-937X/$ – see front matter © 2011 International Association for...Saurastra amba C al iB aR Tanzania be bilo Am m z An Kenya c b Horn of Africa So a 705...define pre-, syn- and post-break-up successions (Geiger et al., 2004). The pre-breakup succession is greater...sandstones (Geiger et al., 2004). Subsequent units represent post-break-up strata (Geiger and Schweigert...Quaternary extension is associated with faulting, rift valley formation and volcanic activity (e.g., Bertil and |  | Chakhmouradian, A. R., Cooper, M. A., Medici, L., Hawthorne, F. C., Adar, F. (2008) FLUORINE-RICH HIBSCHITE FROM SILICOCARBONATITE, AFRIKANDA COMPLEX, RUSSIA: CRYSTAL CHEMISTRY AND CONDITIONS OF CRYSTALLIZATION. The Canadian Mineralogist, 46 (4) 1033-1042 doi:10.3749/canmin.46.4.1033 | Journal (article/letter/editorial) | | abundant crystals of F-rich hibschite associated with titanite, chlorite, calciocatapleiite and calcite. The...cristaux de hibschite riche fluor associés à la titanite, chlorite, calciocatapléiite et calcite. Les cristaux...(including primary Ca–Fe–Ti garnet, perovskite, titanite and ilmenite). During a systematic study of silicocarbonatites...magnesiohastingsite, calcite, magnetite, perovskite, titanite and chlorite. Some 50 different accessory minerals...primary calcite and associated with chlorite, titanite and Ca–Zr silicates. Most common are fragmented |  | | Journal (issue) | | ::^Sih£fes2 region ->sSEE THE FOLLOWING EQUIPMENT DEMONSTRATED AT THE HODGE...Recent Strikes 7 Mineralogy of the Trona-Death Valley Region 9 Exchange Directory 18 Book Notes 25 Cover...OUR ADVERTISERS. The article on the Trona-Death Valley region is the first of a REGULAR SERIES V/E PLAN...INSTRU MENT IS GENERALLY LESS FRAGILE THAN THE GEIGER COUNTER, AND SMALL ENOUGH TO BE CARRIED IN THE... An extensive gold strike in the Searchlight district, thirty MILES FROM LaS VEGAS, NEVADA HAS BEEN |  | | Journal (article/letter/editorial) | | corundum were formed at stage 1 of metasomatism in a titanite-bearing matrix consisting of scapolite (Aneq577–88)...of the island. About twenty localities are known (see Rakotodrazafy 1995, for their geographic distribution)...the skarns. Aluminous diopside, CO3-scapolite, titanite or spinel and thorianite are characteristic of...shaped veins of REE-rich calcite with zircon, titanite, diopside, scapolite and thorianite crosscut the...gneisses indicates 4–4.8 kbar and T5750–8008 C (see Fig. 4; the TWQ software by Berman 1991, was used |  | | Journal (article/letter/editorial) | | 1I Aines,R.D., seeRossman,G.R., 1153 Akaogi, M., see McMillan, P.F., 354 Allen, C.M.: Local equilib'riumof...granulite tenanes, 1328 Apps, J.A., see Hemingway,B.S., 445 Arita" K., see Maeda,1., L674 Armbruster,T,, seeWenger...1738 Bakas,T., see Coey,J.M.D., 1905 Ball, N.A., see Hawthorne,F.C., 370, 1836 Bamba,M, see Maedg 1., 1674...distance-leastsquaresrefinement, 343 Barber,I.P.,see Yardley, B.W.D., E48 Barnes,C.G., Ensenat,S.E., Hoover...England,U.S.A.' 713 Barron,B.R., see Smith,D', 1950 Barton,P.B., Jr., see Toulmin, P., m, 1038 Bayliss,P |  | | Journal (article/letter/editorial) | | grossular (Ca3Al2Si3O12), enstatite (MgSiO3), and titanite (CaTiSiO5) LAURENT THIÉBLOT ,* CHRISTOPHE TÉQUI...3Al2Si3O12), ortho- and protoenstatite (MgSiO 3), and titanite (CaTiSiO5) were determined from drop-calorimetry...for protoenstatite above 1700 K. Our results for titanite up to the melting point confirm the minimal calorimetric...we have also redetermined the heat capacity of titanite (CaTiSiO5). This mineral recently has been the...cations (Richet et al. 1994, 1998). Interest in titanite thus stems from its much differing stoichiometry |
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