 | Pichavant, Michel, Kontak, Daniel J., Briqueu, Louis, Herrera, Jacinto Valencia, Clark, Alan H. (1988) The Miocene-Pliocene Macusani Volcanics, SE Peru. Contributions to Mineralogy and Petrology, 100 (3) 325-338 doi:10.1007/bf00379742 | Journal (article/letter/editorial) | | Springer-Verlag 1988 The Miocene-Piiocene Macusani Volcanics, SE Peru II. Geochemistry and origin of a felsic...1470, Lima 13, Peru Abstract. The Miocene-Pliocene Macusani ash-flow tufts from SE Peru, containing magmatic...fractionated relative to the first erupted. The Macusani magmas are direct products of crustal melting...fail to account for a number of features of the Macusani magmas, aH2o was internally controlled and magma...temperatures (up to 800 ~ C) in the source region. The Macusani magmas are generated as low melt fraction batches |  | | Journal (article/letter/editorial) | | Springer-Verlag1988 The Miocene-Pliocene Macusani Volcanics, SE Peru I. Mineralogy and magmatic evolution...Canada, 1470, Lima 13, Peru Abstract. The Miocene-Pliocene Macusani volcanics, SE Peru, outcrop in three...activity from 10 to 4 Ma in the Macusani field. The volcanics in the Macusani basin comprise crystal-rich...is essentially constant throughout the entire Macusani field. Two distinct generations of plagioclase...Miocene-Pliocene peraluminous volcanics from the Macusani area, SE Peru. Compared to previously described peraluminous |  | Hofstra, A. H., Todorov, T. I., Mercer, C. N., Adams, D. T., Marsh, E. E. (2013) Silicate Melt Inclusion Evidence for Extreme Pre-eruptive Enrichment and Post-eruptive Depletion of Lithium in Silicic Volcanic Rocks of the Western United States: Implications for the Origin of Lithium-Rich Brines. Economic Geology, 108 (7) 1691-1701 doi:10.2113/econgeo.108.7.1691 | Journal (article/letter/editorial) | | extensional tectonics that produced the Basin and Range province and Rio Grande rift, an evolving pattern of closed...sometimes contain vapor phase minerals, such as topaz, garnet, beryl, or tin, and are genetically related...pegmatite (Congdon and Nash, 1991). Obsidian from Macusani, Peru, has the highest lithium abundance yet reported—of...SILICIC VOLCANIC ROCKS, WESTERN USA 10,000 Macusani, Peru 3400 ppm Lithium ppm 1,000 90th 100 50th...2005). In the western United States, anorogenic topaz rhyolites are the prime examples (Burt et al., 1982; |  | | Journal (article/letter/editorial) | | Utah in a region populated with severalTertiary topaz rhyolites. Phenocrystsconsist of quartz, sanidine...groundmass.Primary phenocrysts and megacrystsof topaz and fluorsiderophyllite (- lolototal) and accessoryphases...erupted at 4.7 Ma in the eastern Basin and Range province (Lindsey, niently divided into two units, a pyroclastic...Latiteanddacite of biotite, plagioclase,sanidine, topaz, and quartz were 1""''ldeposits analyzedfor trace...illustrated in Fig- less abundant F-rich annite and topaz set in a glassy ure 2, in which the pyroclastic |  | | Journal (article/letter/editorial) | | 1989; accepted August 7, 1990 Summary Albite-topaz kerotophyres, termed ongonites, were discovered...rocks elsewhere (Beauvoir and Cinovec granites; Macusani glass). Ongonites are fluorine-rich peraluminous...and normative albite content and the presence of topaz as common accessory mineral. They contain variable...Granite von Beauvoir und Cinovec, das Glas von Macusani) verglichen. Ongonite sind Fluor- und Aluminiumreiche...discovery by Kovalenko et al. (1970) of albite topaz keratophyres (ongonites) closely associated with |  | Webster, James D., Thomas, Rainer, Rhede, Dieter, Förster, Hans-Jürgen, Seltmann, Reimar (1997) Melt inclusions in quartz from an evolved peraluminous pegmatite: Geochemical evidence for strong tin enrichment in fluorine-rich and phosphorus-rich residual liquids. Geochimica et Cosmochimica Acta, 61 (13) 2589-2604 doi:10.1016/s0016-7037(97)00123-3 | Journal (article/letter/editorial) | | liquid, suppressed the crystallization of magmatic topaz and P-rich minerals, and allowed the liquid to become...Background The Erzgebirge is a classic metallogenetic province that is situated within the Saxothuringian zone...southern Germany showing the Erzgebirge mining province and the location of the Ehrenfriedersdorf mining...albite, and Li-bearing micas, with subordinate topaz, muscovite, triplite-( zwieselite), fluorite, F-...occurrences of pegmatitic quartz as well as in topaz and triplite at Ehrenfriedersdorf. The inclusions |  | | Journal (article/letter/editorial) | | inclusions from seven high-silica rhyolites and tin and topaz rhyolites of western North America. Small ranges...samples including a latite, the Peruvian Macusani obsidian, and a topaz rhyolite doped with excess F. Chloride...4 Peralum. 5 F-hpg. P- & F-hpg. 6 P-hpg. Macusani TR8009C8 7 obsidian SiO2 75·10 74·50 71·20...gels and AlPO4. 7 Composition of Macusani obsidian pebble from Peru; sample JV-1 of Pichavant et al.... (1987). 8 Composition of F-doped topaz rhyolite from Spor Mtn, Utah. 9 Total iron as FeO. 10 Constituent |  | | Journal (article/letter/editorial) | | a natural F-, B-, and Prich composition (Macusani glass, Peru). Starting material and procedures Starting...determination of F by microprobe analysis (standard: topaz), the fluorine content of F-bearing glasses was...composition of the natural sample (MAC-JV1, Macusani glass, Peru) used in this study is given in Table 2...the experiments. Table 2. Composition of the Macusani starting glass - Experimental procedure Experimental...are given in Table 4 10 [] P-bearing melt ] [] Macusani melt ~ ? - . " 9 c,~/4"- I " .,4 ,~. 8oooc |  | | Journal (article/letter/editorial) | | values for these same minerals in rhyolite from Macusani, Peru [from table 6 of Pichavant et al. (1988)] (Table... From Icenhower & London (1995). From Macusani rhyolites, Peru (Pichavant et al., 1987). 2 In evolved...et al., 1989) and peraluminous rhyolite from Macusani, Peru (London et al., 1988) measured, among other...F-, B-, and P-rich system represented by the Macusani glass (London et al., 1988). FLUORINE At the...experiments (LaTourrette et al., 1995); Ο, Macusani, Peru (Pichavant et al., 1987); Χ, Honeycomb Hills |  | | Journal (article/letter/editorial) | | the Andean Cordillera are also P rich (e.g., Macusani, Peru; Morococala and Los Frailes, Bolivia). In these...6 wto/oPrO, in Kf and 0.4 wto/oPrO, in Pl from topaz lithium mica granites. The averageP contents of...rich. For example, early erupted tuffs of the Macusani volcanic center, southeastPeru, contain 0.31-0... sample 1O7Qt4: aphyricgranite,sample 1112; 5: topaz granite,sample 1089.Analyses6-8 from Rossi et al...and more meaningful than Iy'CNK (especiallyfor topaz granite from Cornwall and the three Beauvoir analyses) |  | | Journal (article/letter/editorial) | | San Diego County, CA), and rhyolites (e.g., Macusani, Peru) that are enriched in the volatile and incompatible...California (Mahood and Hildreth 1983), Macusani volcanics, Peru (Pichavant et al. 1987), and the Honeycomb...experiments (LaTourrette et al. 1995), filled diamond Macusani, Peru (Pichavant et al. 1987), filled circle Honeycomb...Morococala, Bolivia (Morgan et al. 1995). The data from Macusani, Morococala and the experiments are remarkably...coexisting glass from the peraluminous Macusani rhyolite, Peru (Pichavant et al. 1987) yield a value of |  | Wandji, Pierre, Tchokona Seuwui, Dieudonné, Bardintzeff, Jacques-Marie, Bellon, Hervé, Platevoet, Bernard (2008) Rhyolites of the Mbépit Massif in the Cameroon Volcanic Line: an early extrusive volcanic episode of Eocene age. Mineralogy and Petrology, 94 (3) 271-286 doi:10.1007/s00710-008-0013-6 | Journal (article/letter/editorial) | | Line (CVL) is a continental intraplate volcanic province (Fig. 1a) in Central Africa. This huge tectonic...Escalant 1988), Cerro Cancahuine, Peru (Sandeman and Clark 2004), Macusani, Peru (Pichavant et al. 1988) 279...Afar Rift Corsica Iceland 0.1 Martinique Peru Macusani 0.01 Cs Rb Ba Th U crust in the genesis of...elsewhere in alkaline rhyolites, especially in topaz-bearing and other silica-rich rhyolites (Orozco...1994). Peraluminous rhyolites of Cerro Cancahuine, Peru, which have evolved under rather low fO2 conditions |  | Zhu, Jin-Chu, Li, Ren-Ke, Li, Fu-Chun, Xiong, Xiao-Lin, Zhou, Feng-Ying, Huang, Xiao-Long (2001) Topaz–albite granites and rare-metal mineralization in the Limu District, Guangxi Province, southeast China. Mineralium Deposita, 36 (5) 393-405 doi:10.1007/s001260100160 | Journal (article/letter/editorial) | | Huang Topaz±albite granites and rare-metal mineralization in the Limu District, Guangxi Province, southeast...March 2001 Ó Springer-Verlag 2001 Abstract The topaz±albite granites of the Limu district are ultra-acidic...microcline-albite granite, through albite-microcline granite, topaz±albite granite, pegmatite stockscheider and layered...mineralization, and melt inclusions in quartz, topaz, and albite are typical features indicative of their...comparison with rare-metal-bearing pegmatite, ongonite, topaz rhyolite and obsidian glass from other regions shows |  | | Journal (article/letter/editorial) | | Postmagmatic Processes in Tin-mineralized Granites: Topaz-bearing Leucogranite in the Eurajoki Rapakivi Granite...biotite granites and late-stage topaz-bearing granite, as well as related topaz-bearing rhyolite (ongonite)...and geochemistry of the topaz-bearing granite. The presence of magmatic topaz is indicated by petrographic...inclusions entrapped in topaz. The magmatic origin of accessory cassiterite in the topaz-bearing granite (average...in greisen. Some of the rhyolite dykes contain topaz as phenocrysts and as small prismatic crystals in |  | | Journal (article/letter/editorial) | | melts. It can display reaction relationships with topaz and titanite, depending on changes in melt composition...cryolite (Na3AlF6), villiaumite (NaF) and fluor-topaz (Al2SiO4F2). Villiaumite occurs only in silica-undersaturated...with F (Manning 1981), fluorite, with or without topaz, has also been reported to occur in several Ca-poor... (1996) from the Mount Scott Granite, Wichita province, Oklahoma, where it occurs as euhedral crystals...melt was that of Webster et al. (1987) on a glassy topaz rhyolite from Spor Mountain, Utah. Fluorite was |  | | Journal (article/letter/editorial) | | arc, the Macusani rhyolites of Peru, plots in the COLG field (filled squares). The Macusani occurrence...batholith plots in the COLG field. Like the Macusani rhyolites of Peru, the Leinster granite is a highly evolved...California in Mexico to the Trans-Pecos magmatic province in western Texas, USA. The filled symbols 1000...all but a very few samples from the TransPecos province plot in the middle of the WPG field. The age of...MBRP, Mexican Basin and Range Province; TPMP, Tram-Pecos magmatic province. H.-J. F6rster et al./Lithos |  | | Journal (article/letter/editorial) | | granite-pegmatite systems: experimental results with Macusani glass at 200 MPa David London, Richard L. Hervig...lithophile-element-rich rhyolite obsidian from Macusani, Peru, reveal high miscibility of H20 and silicate...creating a sodic, alkaline vapor. Vapor deposition of topaz (T<500 ~ C), which consumes F from melt, returns...study using rhyolite obsidian (macusanite) from Macusani, Peru (Barnes et al. 1970; Noble et al. 1984; Pichavant...f this a n d c o m p a r a b l e studies. The macusani rhyolite obsidian (maeusanite) Macusanite is a |  | | Journal (article/letter/editorial) | | such as apatite, titanite, amphiboles, micas and topaz and in fluorite. Thus, almost all the F present...rhyolites and granites of A-type affinity with topaz andror fluorite as common accessories ŽChristiansen...high-silica alkaline F-lithophile enriched melts Že.g., topaz rhyolites and related A-type granites. are derived...characteristic late-stage crystallization of fluorite andror topaz. Žii. F contents decrease as a result of differentiation...open squares and Tomas Range and Spor Mountain topaz rhyolites ŽChristiansen et al., 1984., open circles |  | | Report (issue) | | 1985, 1995). Nepheline syenite and fluorine-rich topaz-bearing rhyolites are even more enriched in beryllium...about 3 to 24 ppm beryllium, and some fluorine-rich topaz-bearing volcanic rocks in the Western United States...miarolitic cavities in volcanic rocks related to topaz-bearing igneous systems; for example, red beryl...and those of the miarolitic class, REE subclass, topaz-beryl type (niobium-yttrium-fluorine [NYF] family)...of the miarolitic class, lithium subclass, beryl-topaz type (LCT family) (Černý and others, 2012, table |  | | Journal (article/letter/editorial) | | 53 wt% P,Os) pet-aluminousobsidian glassfrom Macusani, Peru (PICHAVANT et al., 1987, 1988b) was used instead...aluminous melt commotions. The andalusites from Macusani, Peru have a composition close to the Al$SiOsendmember...Ap=apatita; All experiments And=andalusite; Mac=Macusani And glass; Ca-P-Glass=glass are of dissolution...calculate A/CNK, except for experiments with the Macusani glass (A/CNK = molar A1/(2Ca + K + Na + Li), Li...KV, 20 nA, 30 set on peak, and I5 background, Macusani glass as a standard, and using the PAP correction |  | | Journal (article/letter/editorial) | | themselves contain mineral species such as fluorite, topaz, tourmaline and Li-micas. Phosphates and carbonates...minerals such as F and/or Li-rich micas, fluorite, topaz and tourmaline. Individual regions or districts...environments can occur at the province scale (eg. the boron-rich province of southwestern Thailand or the...at the magmatic stage by the crystallisation of topaz, fluorite, tourmaline, Li-mica, etc. and/or at the...(apogranitemassivegreisen) stockwork/vein feldspars muscovite topaz silica peraluminous Sn, W, Nb, Ta Li, Be, (Zr |  | Badanina, E.V., Veksler, I.V., Thomas, R., Syritso, L.F., Trumbull, R.B. (2004) Magmatic evolution of Li–F, rare-metal granites: a case study of melt inclusions in the Khangilay complex, Eastern Transbaikalia (Russia) Chemical Geology, 210 (1) 113-133 doi:10.1016/j.chemgeo.2004.06.006 | Journal (article/letter/editorial) | | ‘‘ongonites’’ (topaz-bearing quartz keratophyre) in eastern Asia (Kovalenko et al., 1971), the topaz rhyolites...Reyf et al. (2000) previously studied quartz and topaz-hosted melt inclusions from the Orlovka granite...intrusion with distinctive albite – protolithionite– topaz greisen containing fluorite and beryl. External...oxides, T1 G glass (Jochum et al., 2000); Rb, F: Macusani glass (Pichavant et al., 1987); H2O: Westrich...by either albite, K-feldspar, or by a quartz – topaz – zinnwaldite assemblage. The latter is referred |  | | Journal (article/letter/editorial) | | albite, 26 × 17 × 13 cm, Kunar Valley, Nuristan Province, Afghanistan; Joe Budd photo, courtesy of The...smoky quartz crystal (lower left, 28 × 20 cm) and topaz on elbaite (lower right, 7 × 4.5 cm). Volume 90...March/April 2015 143 1200 P = 200 MPa H2O Macusani obsidian 1000 Be in melt, ppm Figure 6. Solubility-saturation...excess alumina added (peraluminous), and in the Macusani obsidian, which is a close compositional analogue...with beryl; and (3) a rhyolite obsidian from Macusani, Peru (London, Morgan, and Hervig 1989), whose composition |  | Sato, Kohei, Suzuki, Kazuhiro, Nedachi, Munetomo, Terashima, Shigeru, Ryazantseva, Margarita D., Vrublevsky, Anatoly A., Khanchuk, Alexander I. (2003) Fluorite Deposits at Voznesenka in the Khanka Massif, Russia: Geology and Age of Mineralization. Resource Geology, 53 (3) 193-211 doi:10.1111/j.1751-3928.2003.tb00169.x | Journal (article/letter/editorial) | | ***Committee on Geology and Mineral Resources of Primorie Province, Vladivostok, Russia + Institute of Complex Analysis...Li-F-rich felsic rocks including topaz granite and ongonite or topaz rhyolite; these rocks may be classified...450±11Ma <0.1 Fluorite, limestone (greisenized) Topaz, Fluorite, (441Ma3)) (97SA19a) replacement, with...body (Rub and Rub, 1994). F is present mainly in topaz, fluorite and micas. Nb and Ta occur as columbite...and cut by many quartz veins and quartz-albite-topaz veins which commonly contain Li-mica, sericite and |  | | Journal (article/letter/editorial) | | minerals, as well as possibly tour maline and topaz. The existence ofthese minerals in equilibrium magmatic...(mainly andalusite and sillimanite), muscovite, topaz, and tourmaline; the crystallization of the last...Mg,Mn garnet Tounnaline Andalusite/ sillimanite Topaz AI2SiO, Infinite Infinite AI2SiO.(OH, F)2 Infinite...the Harney Peak Granite. MUSCOVITE, TOURMALINE, TOPAZ, AND ANDALUSITE IN PERALUMINOUS GRANITIC ROCKS ...Components in the Magma and the Enigma of Tourmaline and Topaz Additional components might affect the solidus |
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