 | | Report (issue) | | The Natural History Museum of Milan and its Madagascar Collection The Museo Civico di Storia Naturale... the museum began paleontologic fieldwork in Madagascar (upper Permian fauna and Jurassic and Cretaceous...fieldwork in Madagascar in 1996 in collaboration with other institu tions in Madagascar, Italy, and the...Pezzotta has spent a total of twenty nine months in Madagascar making geological-mineralogical surveys. In collaboration...both classic and new minerals and gemstones from Madagascar opened at the Natural History Museum in Milan |  | Novák, Milan, Cempírek, Jan, Gadas, Petr, Škoda, Radek, Vašinová Galiová, Michaela, Pezzotta, Federico, Groat, Lee A. (2015) Boralsilite and Li, Be-bearing "Boron Mullite" Al8B2Si2O19, Breakdown products of spodumene from the Manjaka pegmatite, Sahatany valley, Madagascar. The Canadian Mineralogist, 53 (2) 357-374 doi:10.3749/canmin.1400092 | Journal (article/letter/editorial) | | PRODUCTS OF SPODUMENE FROM THE MANJAKA PEGMATITE, SAHATANY VALLEY, MADAGASCAR MILAN NOVÁK§ Department of...from the elbaite-subtype Manjaka granitic pegmatite, Sahatany Valley, Madagascar. The pegmatite mineral...solidus/early subsolidus, granitic pegmatite, Manjaka, Madagascar. INTRODUCTION Boralsilite, Al16B6Si2O37...products of spodumene from the Manjaka pegmatite, Sahatany Valley, Madagascar, represents a novel genetic...origin. GEOLOGICAL SETTING The Manjaka pegmatite occurs in the Sahatany Valley pegmatite field, located in |  | Gadas, Petr, Novák, Milan, Škoda, Radek, Cempírek, Jan, Zachař, Adam, Flégr, Tomáš, Pezzotta, Federico (2019) Titanium in tourmalines from granitic pegmatites and their exocontacts. The Canadian Mineralogist, 57 (5) 745-747 doi:10.3749/canmin.ab00011 | Journal (article/letter/editorial) | | Moldanubian Zone, Czech Republic (Novák et al. 2011); (ii) schorl to bosiite as a product of hydrothermal replacement...spodumene and calc-silicate rock at Manjaka, Sahatany Valley, Madagascar (Novák et al. 2015). RESULTS Concentrations...59, and 0.64 apfu, in the Třebı́č pegmatites, Manjaka and Řečice, respectively. The X-site is mostly...the Ti substitution may be similar to that in Manjaka, with significant Fe2þ and Fe3þ instead of Mg and...elevated K (0.17 apfu). The mineral assemblage from Manjaka pegmatite exocontact is very complex and besides |  | | Journal (article/letter/editorial) | | Associated minerals are villiauniite, aegirine, phlogopite, niobian rinkite (4.G5.2 wt. % Nb,O,), manganoan...only from the Sahatany Valley region in Madagascar. The principle occurrence is the Manjaka pegmatite, where...Animikie Red Ace pegmatite is very similar to that at Manjaka and suggests similar bulk chemistry of the pegmatitic...reported in the earlier analysis of behierite from Manjaka (Mrose and Rose 1962). SnO,, MnO, FeO, and Bi,O...Antandrokomby (35 kilometers south of Antsirabei, Madagascar) yielded a comparable composition with a slightly |  | | Journal (article/letter/editorial) | | Germany The Saharan Mineral Dust Experiment II (SAMUM II) is dedicated to the understanding of the radiative...burning events. Iron isotope fractionation during Fe(II) oxidation and precipitation of iron in acid mine...isotope fractionation during the oxidation of Fe(II)aq into Fe(III)aq by A. ferrooxidans was controlled...focused on iron isotope fractionation during the Fe(II) oxidation and the subsequent precipitation of iron...characterized by acid pH (3-5), extremely high Fe(II) (≈ 2g/l), SO42- (≈ 4 g/l) and As(III) (100 mg/l) |  | | Journal (article/letter/editorial) | | Ctidru~ice, Biskupice, Vlast~jovice, Kom/trovice, Jeclov II). However, isolated occurrences also are present...rims composed of anthophyllite, actinolite and phlogopite are developed along the contacts with serpentinite...i Ctidru~ice; Bis Biskupice; J e I I J e c l o v II; V i a Vlast~jovice. A a b u n d a n t , C c o m...occurrence of lepidolite and particularly muscovite, (ii) predominance of K-feldspar over albite, (iii) absence...and other pegmatites of the Jihlava pegmatite district, Novfi Ves near Cesk) Krumlov; Cech, 1962; Nkmec |  | Novák, M., Prokop, J., Losos, Z., Macek, I. (2017) Tourmaline, an indicator of external Mg-contamination of granitic pegmatites from host serpentinite; examples from the Moldanubian Zone, Czech Republic. Mineralogy and Petrology, 111 (4) 625-641 doi:10.1007/s00710-017-0512-4 | Journal (article/letter/editorial) | | rocks (group A) of anatectic or metasomatic origin, (ii) subhomogeneous to simply zoned barren pegmatite...of pegmatite solidification (Novák et al. 2012); (ii) post-emplacement stage of contamination of pegmatite...structure in various pressuretemperature conditions, (ii) common occurrence in different stages of pegmatite...orthogneiss, quartzite, amphibolite is overlain by (ii) the Varied group, Tourmaline, an indicator of...2015b): (i) pre-Variscan (metamorphosed) pegmatites; (ii) several types of simple anatectic (abyssal) pegmatites; |  | | Book (volume) | | ÏLi CEOLC-I: Uoogl. Kerk», *ch( 1 7 ü - ’D-'ir .II. Lei.&n MliMilMIJJUll! LA 1)1! SUPPLEMENT...figurent pas dans ceux-ci. En ce qui concerne Madagascar, d’où documents nouveaux, offrant un intérêt...coloration brun rouge. GISEMENTS ET ASSOCIATIONS Madagascar. — J’ai donné le nom d’ampaugabéite [C. B. CXLIV...ANrHOPHYLLITE-GÉDRITE (ï. p. 035; 1 , T. VI, p. 784). — Madagascar. J’ai rencontré [B. S.M. XXXV. 97. 1912) un...micaschistes mont Bitv). IV, p. 787). — Madagascar. J’ai visité le gisement d’Ambatoarina, d’où |  | Zolotarev, , Krivovichev, , Panikorovskii, , Gurzhiy, , Bocharov, , Rassomakhin, (2019) Dmisteinbergite, CaAl2Si2O8, a Metastable Polymorph of Anorthite: Crystal-Structure and Raman Spectroscopic Study of the Holotype Specimen. Minerals, 9 (10) 570 doi:10.3390/min9100570 | Journal (article/letter/editorial) | | disordered structure having the P63 /mcm symmetry; (ii) degree of disorder of the O sites, which may have...uniqueobserved observed reflections reflections with with II ≥ ≥ 2σ(I) using for using the the ShelX ShelX program...tetrahedral with completely structure thesymmetry; P63/mcm (ii) degree of disorder of the O sites (particularly...which have a direct influence upon the symmetry; (ii) degree of disorder of the O sites (particularly...Al16 B6 Si2 O37 , from the Manjaka pegmatite, Sahatany Valley, Madagascar. Am. Mineral. 2016, 101, 2108–2117 |  | | Journal (article/letter/editorial) | | hydrothermal beryl II and phenakite II occur in miarolitic pockets (paragenetic type II). Secondary hydrothermal...elevated contents of Na, Cs, Mg, Fe, Sc in beryl I and II; Na, Ca, Mg, Fe, Al in bazzite III; REE in milar...magmatic Be-minerals within a single pegmatite district is exceptional and it is constrained by variable...orthoclase. Additional minerals comprise (Fe, Ti)-rich phlogopite, oscillatoryzoned plagioclase (An8–40), amphibole...Kožichovice I,II; POZ – Pozďátky; KLU – Klučov III; OKR – Okrašovice; CIM – Číměř I,II; KRA – Kracovice |  | | Journal (article/letter/editorial) | | zone of the complex of a major map-unit labeled phlogopite peridotite. Whether this metasomatism occurred...albite-dominant zircon syenite pegmatites that cut the phlogopite peridotite; these pegmatites are devoid of corundum...massif, in pegmatite dikes exposed in the Cannobina Valley, for example (A. Guastoni, pers. commun., 2004)...change where the degree of metamictization is low), Valley (2003) found that one could expect a decodable...anatexis” (Černý 1992). The important findings of Valley (2003) indicate that the sources of Archean granites |  | Čopjaková, Renata, Prokop, Jiří, Novák, Milan, Losos, Zdeněk, Gadas, Petr, Škoda, Radek, Holá, Markéta (2021) Hydrothermal alteration of tourmaline from pegmatitic rocks enclosed in serpentinites: Multistage processes with distinct fluid sources. Lithos, 380. 105823pp. doi:10.1016/j.lithos.2020.105823 | Journal (article/letter/editorial) | | particularly in the more evolved pegmatites, and (ii) fluids infiltrated/diffused from host rocks (Mg...Oslavany II) and more evolved, complexly zoned pegmatite dikes with Be -p minerals (Věžná II, Věžná I);...calc-silicate rocks. Both ro groups are overlain by (ii) the structurally highest Gföhl Unit comprising felsic...(metamorphosed) pegmatites (Novák et al., 2013); (ii) several types of simple anatectic (abyssal) pegmatites...fragments of the pegmatite Nová Ves near Oslavany II have the same mineral assemblage (Kfs+Ab+Qz±Ms I |  | | Book | | 80 Emerald and 140 Beryls, as Founda- Part II 86 87 Birthstones, Beryl in India, CHEMICAL AND... Japan, 462 Switzerland, 510 Tanzania 463 Madagascar (Malagasy Republic), Malawi Nepal, 482 513...of cultural the present work astrological Part II lesser extent, a of part to knowledge has been...derived from erald. 5 M. but C. . which to II in the searched the literature for references to...more km) from Coptos passed center for these district, correspond cites a King to the are to Bostock |  | | Journal (issue) | | Rhodizite-Londonite from the Antsongombato Pegmatite, Central Madagascar Brendan M. Laurs, Federico Pezzotta, William...Process ratified • Alexandrite from Mananjary, Madagascar • Colorchange apatite from Kazakhstan • New emerald...68); and Steve Ulatowski of New Era Gems, Grass Valley, California, for the before-and-after sample of... RHODIZITE-LONDONITE FROM THE ANTSONGOMBATO PEGMATITE, CENTRAL MADAGASCAR By Brendan M. Laurs, Federico Pezzotta, William...londonite is the Antsongombato pegmatite in central Madagascar, from which at least 300 carats of rhodizitelondonite |  | | Journal (article/letter/editorial) | | Ambatovita, Mandrosonoro area, Fianarantsoa Province, Madagascar. R060583 reproduced with permission from the...(rubellite) from Manjaka, Sahatany Pegmatite Field, Antananarivo Province, Madagascar. Coin diameter is... Be2AlO4. Twinned crystals from the Ratnapura district, Sri Lanka. Photograph of sample R100130 reproduced...reported from several localities in the Urals and Madagascar and from one locality in Wisconsin and the United...has been confirmed only from two localities in Madagascar (Pring et al. 1986; Simmons et al. 2001). Re-examination |  | | Journal (article/letter/editorial) | | F. Chudoba, Hintze, Handb. Min., 1959, Erg.-Bd. II, p. 655 (Alumohaematit). An aluminian hematite in... F. Chudoba, 1959. Hintze, Handb. Min., Erg.-Bd. II, p. 658 (Ammonium-Aphthitalit). An unnecessary name...Survey of Argentina. [M.A. 14-343.] Aquacrepit, II, p. 659). error f o r Aquaereptit (Hintze, Handb... 21st List) (Hintze, Handb. Min., 1959, Erg.-Bd. II, p. 660). Arsenothorite. E. M. Bonshtedt-Kupletskaya...Arsenosulvanit (20th List) (Hintze, Handb. Min., Erg.-Bd. II, p. 660). Arsenuranocircite. H. Strunz, 1957. Min |  | | Book | | -~~1---------- 1960-2015 by Thom.as P. Moore Volume II I-Z Published by the Mineralogical Record, Inc....Mount Malosa, Chilwa alkaline province, Zomba district. "Illite" is the name of a series of incompletely...crystals of rutile (Weerth, 2004). Tonniq Valley, Skardu district, Gilgit-Baltistan [Northern Areas]. Beginning...region of Alpine-type clefts along the Torrniq Valley produced small numbers of ilmenite specimens reminiscent...The thin-tabular ilmenite crystals of the Torrniq Valley also form spherical aggregates ("closed roses") |  | | Journal (issue) | | courtesy of Rio Tinto; (4) an 11.16 ct sapphire from Madagascar, GIA Collection no. 31618; (5) a 1.01 ct yellow...competitive rough diamond market. Political problems in Madagascar and a ban on gem exports from Myanmar disrupted...were combined under the jurisdiction of the U.S. District Court of New Jersey 168 PRODUCTION AND MARKETS...for gemstones. New Deposits and New Operations. Madagascar. Much of the global gem business for well over...in the middle of the decade was dominated by Madagascar. This was due in part to the Malagasy PRODUCTION |  | | Book (edition) | | dept. (departement), dept. (departamento), dist. (district). Less common terms are not abbreviated, e.g....byssolite. Mono- coast of North America: Kobuk River Valley, Alaska, clinic, C2/m, a,b,c = 9.89, 18.20, 5.31...e.g. on Grossgreiner Mt., overlooking Zillertal Valley, Tirol, Austria, and at Passo di Vizze, Trentino-Alto...western Sayan Mts., white at Burumskoye, Vitim River Valley, all Siberia, Russia. In many localities in New...Ambohitromby and Tongfeno, S of Betafo, both Madagascar. Tabular crystals to 1 cm in Alpine fissures |  | | Book | | Determinative—Handbooks, manuals, etc. I. Appiani, Roberto. II. Title. 549 /.I 22 QE367.2.G83 2005 Library and Archives...1-55407-056-2 1. Minerals. 2. Mineralogy. I. Appiani, Roberto II. Title. QE363.2.G8213 2005 549 C2004-907454-7 Published...Natural History Museum in Milan) and the Federico II Museum of the University of Naples. Some specimens...diopside from the Susa Valley, Piedmont, Italy Pages 8-9: Beryl from the Codera Valley, Lombardy, Italy Pages...Pages 50-51: Tetrahedrite and realgar from the Binn Valley, Switzerland Pages 70-71: Fluorite crystals from |  | | Book | | Mineralogy - Terminology I. Embrey, Peter Godwin II. Fuller, John P. III. British Museum (Natural History)...Resources, US Geol. Survey, for 1910, 1911, part ii, p. 836.) Trade-name for a bitumen allied to elaterite...Resources, US Geol. Survey, for 1909, 1911, part ii, p. 733.) Trade-name for a bitumen very similar to...from Monte Chiaro and other localities in the Taro valley region, Italy (.M.A., 8, 517; 15, 332) is now named...(almashite II) varieties of amber, differing from romanite, from the Almas (Almash) valley near Piatra |  | | Report (issue) | | tantalum according to chemical types_________ Part II Niobium and tantalum minerals..-_______ Part III...Distribution is known from the Idaho batholith, Bear Valley, Tantalum (ppm) coefficient > Mineral Parent rock...highly alkalic and ere comHornblende. 0.7 > Green Valley Tonalite. _. | 2.3 Biotite.---.. posed principally...and a high Nb2Os:Ta2O5 ratio of 20-30; columbite II, closely associated with zinnwaldite, is characterized...gravity in cohrabitetantalite of the Quartz Creek district, Colorado, is shown in the following table (Staatz |  | | Report (volume) | | Spositio, George H. Swihart, John A. Tossell, John W. Valley, David J. Waters. Assistance from John Jambor,...£ in u ^r I § » § X K c • s e s ' S y .ii o •5 o & g i ! | o c •g f2 P qj s "C a — c ¿...^ /b l_ id u td u «> JEOC g2 ^«3 -oup. uaM iMo ii a (N O CQ a o ...3 r- « .S.S .E.E s - 5 f t J 3 S S - s Q Q ii O 3 S « 4S •X 1 i 2 CO B 3 § X .5 s • S...Kramer H (1957) Ginorite and sassolite from Death Valley, California. Am Mineral 42:56-61 Anthony JW, Bideaux | | | Report (volume) | | MATHEMATICAL CRYSTALLOGRAPHY 16 1986 570 J.W. Valley H.P. Taylor, Jr. J.R. O'Neil STABLE ISOTOPES IN...Quaternary sodium-calciunr borate deposits 220.020. 32). ii. oo. ewntep cena tecviods 275 Quaternaryspditim-borate...bare: ee dh tesa nc a cee ie eee BOrOSUICALS MENS ii. css oc nenece ones ene oe ae eee en eae eee Boron-bearing...Spositio, George H. Swihart, John A. Tossell, John W. Valley, David J. Waters. Assistance from John Jambor,...douRULIEg 19IUSOg ‘Ie PUIAOSIOIOFY-B ueHaqis “YsnosOgs|II MON y YOIMSUNIG (1861) asoyy (S861) OyUTEW 10 ‘Ie |  | | Book | | themselves in the minerals of a single mine or mineral district, one or several particular mineral species, microspecimens...Balmat, New York; and Howard Brown of Lucerne Valley, California. Emanuel Fritch of the Gemological...Pst Wap o. eu ete as : _—-". ee ; — Ba2= ii. CAxTY o ry p= =» = eg @y ete: > oh) LP...yellow-fluorescing humites, and yellow-fluorescing phlogopite occur in the calcite, sometimes in combination...green. It is found at the Ambrosia Lake uranium district near Grants. South of Bingham are mines that contain |
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