 | | Journal (article/letter/editorial) | | high-pressure ophiolite metasediments of Praborna ore deposit (Aosta Valley, Western Alps) SIMONE TUMIATI1,*...Studi di Milano, via Botticelli 23, 20133 Milano, Italy *Corresponding author, e-mail: simone.tumiati@unimi...degli Studi di Padova, via Giotto 1, 35137 Padova, Italy 3 Equipe Géobiosphère actuelle et primitive; Institut...deposit of Praborna crops out in the Zermatt-Saas unit of the Western Alps, in the St. Marcel valley. It represents...geochemically characterise the deposit. Selected phases (piemontite, braunite, garnet, clinopyroxene, white mica |  | Tumiati, Simone, Godard, Gaston, Martin, Silvana, Malaspina, Nadia, Poli, Stefano (2015) Ultra-oxidized rocks in subduction mélanges? Decoupling between oxygen fugacity and oxygen availability in a Mn-rich metasomatic environment. Lithos, 226. 116-130 doi:10.1016/j.lithos.2014.12.008 | Journal (article/letter/editorial) | | Milano, via b NU Mangiagalli 34, I-20133 Milano, Italy; simone.tumiati@unimi.it Institut de Physique du...degli Studi di Padova, via Giotto 1, 35137 Padova, Italy d Dipartimento di Scienze dell’Ambiente e del...Scienza 4, 20126 Milano, Italy CE ABSTRACT The manganese ore of Praborna (Italian Western Alps) is...pyroxmangite (Mn2+SiO3), and minor hematite, omphacite, piemontite and spessartine-rich garnet. Sulphides are absent...on this dataset and the observed assemblages at Praborna, thermodynamic calculations show that these mélange |  | | Journal (article/letter/editorial) | | O4](O4)(O10) where: A1 is Ca; A2 is Ca, REE, Pb, Sr; M1 is Al, Fe, Mg, Mn; M2 is Al; M3 is Al, Fe3+,...Ca2Al3Si3O12(OH) Monoclinic dicate dominant Fe2+ Clinozoisite-(Sr) CaSrAl3Si3O12(OH) Monoclinic and Mn2+ at M1, re...acEpidote-(Pb) (Pb,Ca,Sr)2(Al,Fe3+)3Si3O12(OH) Monoclinic cording to the extended Epidote-(Sr) CaSrAl2Fe3+Si3O12(OH)...Monoclinic all of the known minManganipiemontite-(Sr) CaSrMn3+AlMn3+Si3O11O(OH) Monoclinic erals by subgroup...3+ Piemontite Ca2(Al,Mn ,Fe )3Si3O12(OH) Monoclinic occupy each site in the 3+ 3+ Piemontite-(Sr) CaSr(Al |  | | Journal (article/letter/editorial) | | 2001 Partitioning of Sr between coexisting minerals of the hollandite- and piemontite-groups in a quartz-rich...minerals of the hollandite-cryptomelane series, piemontite-group, and abswurmbachite-braunite series occur...respectively. The piemontite–group minerals can be divided into common piemontite (Ca > Sr in the ten-coordinated...ten-coordinated A2-site) and strontiopiemontite (Sr > Ca). Strontium, Ba and Pb contents of the strontiopiemontite...new endmembers for epidote-group minerals: “Ba-piemontite [BaCa(Mn3+, Fe3+, Al)3Si3O12(OH)]” and “Pbpiemontite |  | Armbruster, Thomas, Bonazzi, Paola, Akasaka, Masahide, Bermanec, Vladimir, Chopin, Christian, Gieré, Reto, Heuss-Assbichler, Soraya, Liebscher, Axel, Menchetti, Silvio, Pan, Yuanming, Pasero, Marco (2006) Recommended nomenclature of epidote-group minerals. European Journal of Mineralogy, 18 (5) 551-567 doi:10.1127/0935-1221/2006/0018-0551 | Journal (article/letter/editorial) | | dell’Università di Firenze, Via La Pira 4, I-50121 Firenze, Italy 3Department of Geoscience, Faculty of Science and...Università di Pisa, Via S. Maria 53, I-56126 Pisa, Italy Abstract: Epidote-group minerals are monoclinic...clinozoisite-(Sr) (new), hancockite (old) = epidote-(Pb) (new), tweddillite (old) = manganipiemontite-(Sr) (new)...following species: Strontiopiemontite (old) = piemontite-(Sr) (new), androsite-(La) (old) = manganiandrosite-(La)...epidote and clinozoisite defined? Of the 22 “piemontite” analytical data reported by Deer et al. (1986) |  | Chukanov, Nikita V., Varlamov, Dmitry A., Nestola, Fabrizio, Belakovskiy, Dmitry I., Goettlicher, Jörg, Britvin, Sergey N., Lanza, Arianna, Jancev, Simeon (2012) Piemontite-(Pb), CaPbAl2Mn3+[Si2O7][SiO4]O(OH), a new mineral species of the epidote supergroup. Neues Jahrbuch für Mineralogie - Abhandlungen Journal of Mineralogy and Geochemistry, 189 (3) 275-286 doi:10.1127/0077-7757/2012/0224 | Journal (article/letter/editorial) | | 275 – 286 Published online July 2012 Article Piemontite-(Pb), CaPbAl2Mn3+[Si2O7][SiO4]O(OH), a new mineral...epidote-supergroup mineral piemontite-(Pb), the Pb-dominant analogue of piemontite, was discovered in the...nežilovite, rinmanite, gahnite and braunite. Piemontite-(Pb) forms purplish-red imperfect crystals up...solved using singlecrystal X-ray diffraction data. Piemontite-(Pb) is monoclinic, space group P21/m; a8...Russia, registration number 4193/1. Key words: piemontite-(Pb), new mineral, epidote supergroup, crystal |  | | Journal (article/letter/editorial) | | response to variable metamorphic grade. On Evvia, piemontite- and/or braunite-rich quartzites which are associated...show the principle mineral assemblage quartz+piemontite + sursassite + braunite + Mg-chlorite + hematite...similar composition contain the assemblage quartz+piemontite+ spessartine + braunite + Mg-chlorite + hematite...assemblages sursassite + Mn 3 +Fe3_~ [hematite, piemontite] + hematite + quartz = spessartine + clinochlore...spessartine during prograde metamorphism of the piemontite quartzites and related rocks. P - T data from |  | Pieczka, A., Kristiansen, R., Stachowicz, M., Dumańska-Słowik, M., Gołębiowska, B., Sęk, M., Woźniak, K. (2024) Heflikite, ideally Ca2(Al2Sc)(Si2O7)(SiO4)O(OH), the first scandium epidote-supergroup mineral from Jordanów Śląski, Lower Silesia (Poland) and from Heftetjern, Tørdal (Norway) Mineralogical Magazine. doi:10.1180/mgm.2023.98 | Journal (article/letter/editorial) | | Kα, LIF, 0.06), Zn (sphalerite, Kα, LIF, 0.08), Sr (celestine, Lα, TAP, 0.06), Y (YPO4, Lα, TAP, 0.04)...minerals can be occupied by Ca and Mn2+ at A1, and Ca, Sr, Pb, and REE3+ with possible subordinate U4+, Th4+...shift, a split of the O–H stretching band in piemontite is observed caused by the Jahn-Teller effect...the epidote group, from Val Graveglia, Liguria, Italy. European Journal of Mineralogy, 2, 519–523. Catti...behavior of the crystal structure of strontian piemontite. American Mineralogist, 73, 1370–1376. Chukanov |  | | Journal (issue) | | ruby 252 Gem News International Large diamond mine to be developed in Saskatchewan, Canada • Spurious...type of phenomenal quartz • A new gemstone from Italy: “Violan quartz” • New sources of marble-hosted...and Salvador Assael, a New York importer born in Italy. Wan purchased and enlarged Tahiti Perles, an operation...luxury retailers in the United States, France, Italy, and Japan. As part of the branding process, Perles...The Pearl Book. www.cibjo.us/pearl.pdf, Milan, Italy. TRANSFORMATION OF THE CULTURED PEARL INDUSTRY |
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