 | | Journal (issue) | | Ferrierite-NH4 Type locality: Libous Quarry, Chomutov District, Usti and Labern Region, Czech Republic...Teplice District, Usti and Labern Region, Czech Republic Jenisuv Ujerd, Bilna, Teplice District, Usti and...Czech Republic Coal Deposit, Handlova,Prievidza District, Trencin Rejion, Slovakia 3 Martinandresite...Martinandresite Ba2 Al4 Si12 O32 . 10 H2O Named for Martin Andres, who discovered the armenite locality of Wasenalp...small crystals of minerals like osumilite, pseudobrookite, topaz, and phlogopite. The scorias at Obsidian |  | | Journal (issue) | | 3 Pseudobrookite Twins from the Lemolo Lake Quarry Don Howard and Kent England Pseudobrookite was...the United States. The crystal structure of pseudobrookite is orthorhombic, the most common form being...matter of twinning in pseudobrookite to be considerably in doubt. Pseudobrookite is reported to occur...came as a surprise to find so many twinned pseudobrookite crystals, and not just one type of twin, but...the margins of a boulder in the west end of the quarry that was originally collected in 1982 and 1983 |  | | Journal (article/letter/editorial) | | Volume 98, pages 417â425, 2013 Coexisting pseudobrookite, ilmenite, and titanomagnetite in hornblende...Seattle, Washington 98195, U.S.A. Abstract Pseudobrookite microphenocrysts occur in cognate inclusions...matrix of fresh rhyolitic glass. Grains of pseudobrookite are rimmed by or intergrown with ilmenite....high-Ti lunar basalts. In a unique occurrence, pseudobrookite, and titanomagnetite form a symplectitic intergrowth...ilmenite. Mass balance calculations show that the pseudobrookite + titanomagnetite assemblage is not an isochemical |  | Anovitz, Lawrence M., Treiman, Allan H., Essene, Eric J., Hemingway, Bruce S., Westrum, Edgar F., Wall, Victor J., Burriel, RamĂłn, Bohlen, Steven R. (1985) The heat-capacity of ilmenite and phase equilibria in the system Fe-T-O. Geochimica et Cosmochimica Acta, 49 (10) 2027-2040 doi:10.1016/0016-7037(85)90061-4 | Journal (article/letter/editorial) | | the mineral hongquiite reported from the Tao district in China. This mineral may not be TiO, and it...er for assemblages of ferropseudobrookite-pseudobrookite,, and hematite-ilmenite;. Preliminary application...NAVROTSKY(1975) notes that her measured enthalpy for pseudobrookite, together with the reversal of Haggerty and...the transition temper- The Gibbs energy of pseudobrookite was derived from the reversal by HAGGERTYand...HAGGERTYand LINDSLEY( 1969) on the reaction: Pseudobrookite = Hematite + Rutile FezTi05 = Fe203 + TiOz -14 |  | | Journal (article/letter/editorial) | | in this article does not give permis- Lincoln district: The Creole mine, located at the south end of...east side of the range. Pine Grove district: This old mining district is the site of a deeply buried porphyry...labeled âMineral Mountains.â Preuss (Newhouse) district: The Cactus mine and nearby workings have pink...gated recently, and entry is now restricted. Rocky district: The Maria mine and the Bawana mine are large...abundant here. Beaver Lake district: Across the valley from the Rocky district is the site of another large |  | | Journal (article/letter/editorial) | | 1957;Bowles,1988).Armalcolite is isostructural with pseudobrookite(Psb: Fel*TiOr), which is widespreadin tenestrial...erogg until the IMA reevaluatesthis system. Pseudobrookite will be used as a group name (sensulato) as...Available crystal-chemical data indicate that pseudobrookite and armalcolite are entropy stabilized and...form at high temperatures(Navrotsky, 1975). Pseudobrookite and armalcolite have two crystallographicallydistinct...(1980).Arm : armalcolite, Psb : pseudobrookite. and synthetic pseudobrookite and armalcolite (Lind and Housley |  | | Journal (article/letter/editorial) | | (2007) 1 â 9 www.elsevier.com/locate/lithos Pseudobrookite-group oxide solutions and basaltic melts Dimitrios...they are not geological oddities. Besides, pseudobrookite oxide solutions may have had a critical role...Ti1+xO5 solutions, and of the known properties of pseudobrookite-group MgTi2O5 suggests that R3+ TiO solutions...reactions between pseudobrookite-group Ti oxide and olivine, orthopyroxene and pseudobrookite-group Ti oxide...Ti-enriched liquids; (3) lack of either ilmenite or pseudobrookite-group Ti oxide saturation in melts, which are |  | Morisset, C.-E., Scoates, J. S., Weis, D., Sauve, M., Stanaway, K. J. (2010) RUTILE-BEARING ILMENITE DEPOSITS ASSOCIATED WITH THE PROTEROZOIC SAINT-URBAIN AND LAC ALLARD ANORTHOSITE MASSIFS, GRENVILLE PROVINCE, QUEBEC. The Canadian Mineralogist, 48 (4) 821-849 doi:10.3749/canmin.48.4.821 | Journal (article/letter/editorial) | | V6T 1Z4, Canada Martin SAUVö Iron Ore, Rio Tinto Exploration â Australia District, 37 Belmont Avenue...magnetiteâulvöspinel, hematiteâilmenite and pseudobrookiteââferropseudobrookiteâ solid solutions. Ilmenite...result of breakdown of âferropseudobrookite-pseudobrookiteâ phase? An alternative hypothesis for the presence...composition along the âferropseudobrookite-pseudobrookiteâ tie line? There is relatively little known...known about the stability of pseudobrookite-group Ti oxide solutions with respect to common rock-forming |  | | Journal (article/letter/editorial) | | extrusiverocks havebeenfound. The samplesstudiedarefrom a quarry on thesouth jumillite from Spain.The iron contentof...fact exist in rather than magnesium-rich ferro-pseudobrookite. nature.However,the rarity of hyperalkaline...rocks,can explainwhy potassiumriebeckitehas not pseudobrookite on a (Ti,Si)Or-(Fe,Mg,Mn)O-(Al, yet beenreported...armalcolite(Andersonet al, 1970)has been proposedfor a pseudobrookite-like mineral with the generalformulaFe2+o.uMge...Table 3 MnO gives the chemicalanalysisfor the pseudobrookite lio 2 from type III rock. The structuralformula |  | Stahle, V., Koch, M., McCammon, C. A., Mann, U., Markl, G. (2002) OCCURRENCE OF LOW-Ti AND HIGH-Ti FREUDENBERGITE IN ALKALI SYENITE DIKES FROM THE KATZENBUCKEL VOLCANO, SOUTHWESTERN GERMANY. The Canadian Mineralogist, 40 (6) 1609-1627 doi:10.2113/gscanmin.40.6.1609 | Journal (article/letter/editorial) | | exsolutionlamellae within hematite grains. Pseudobrookite, ilmenite, hematite or magnetite occur as FeâTi...dâexsolution au sein de cristaux dâhĂ©matite. La pseudobrookite, lâilmĂ©nite, lâhĂ©matite ou la magnĂ©tite sont...and magnetite, lenses of sulfide minerals, pseudobrookite and hematite pockets as well as tuffaceous...1609 40#6-dĂ©c-02-2443-06 1611 1611 Michelsberg quarry (Alter Gemeindesteinbruch; see Frenzel 1955, 1960)...collected recently at the abandoned Michelsberg quarry. ANALYTICAL PROCEDURES Mineral analyses were performed |  | | Journal (issue) | | worth looking at. The minerals found here are pseudobrookite, tridymite, hornblende, hypersthene, and apatite...is present, nor did I find any on my trip. Pseudobrookite is a ferric titanium oxide, Fel+Ti0 5âą It forms...and others may resemble snowflakes. After the pseudobrookite, the tridymite is the most interesting present...Hypersthene may be found in vugs alone, or with pseudobrookite, hornblende, and tridymite. In some vugs there...close to either end of the dam. 101 Figure 1 pseudobrookite 100 Figure 2 hypersthene Figure 4 tridymite |  | | Journal (article/letter/editorial) | | infrared study of a volcanic amphibole Buerger, Martin, J. Contemporary crystallography [book review]...Sulfide spherules in vesicles of dredged pillow basalt Calvo, C. Crystal structures of Ca3(AsOr)2, Ca:(VOr)z...Cuprian galena solid solutions, Zapallar mining district, Atacarna, Chile Clark, Alan H. Molybdenite 2H1...Dickey, John S., Jr. Skeletal crystallization of pseudobrookite Dodge, F. C. W. Al2SiOs minerals in rocks of...polymorphism Ito, Jun. Synthesis of scandium pseudobrookite, ScrTiOs Ivey, Kenneth H. Fluorine micas [book |  | | Journal (article/letter/editorial) | | Crystallography Contemporarycrystallography (Buerger,Martin, J.) 3-4 642 Crystal defectsand crystalline interfaces...(Snetsinger, KennethG.) K-feldspar,Inyo countY (Martin, Robert F.) l-2 281 Central African Republic Mineralogy...Geochemistry K-feldspar,United States,California (Martin, Robert F.) t-2 281 British Columbia Mineralogy...electron probe 7'8 t359 (Radcliffe, Dennis, e/ a/) Basalt,augite,electron Probe l-2 225 (Smith,Douglas,et...River shale (Pabst,A.) 3-4 560 Copper Geochemistry Basalt (Moore, James G., et al) 3-4 476 Crystal chemistry |  | | Journal (article/letter/editorial) | | Marl a n d : A m p h i b o l e s in andesite and basalt: Stability 1069 as a function of , - ? - f o z...Krichterite, riebeckite, Kin andesite, thermal stability basalt, nephelinite G. AMTHAUER, with F. Rost, E. Beefllan:...and liotiPes: Quanzo5 titative Fe3'/Fe2- ratios Basalt 722 chenical analyses 1118 fibers and crystals... Allen, G. Marland: Anphiboles in andesite and basalt: I. Stability as a function of P-T-f^ f069 '42...Crystal _, structure of whitlockite frorn the Palerno quarry 120 CAMERON,KENNETHL. An experinental study of |  | | Report (issue) | | (Fe3+2Ti)O5 Pseudobrookite Crystal Data: Orthorhombic. Point Group: 2/m 2/m 2/m. Commonly in short...processes in titanium-rich andesite, rhyolite, basalt, etc., and by reactions with xenoliths within these;...Piski, Romania. In Germany, near Mayen, Eifel district. From Riveau Grande, Mt. Dore, Puy-de-DĂŽme, France...J. and G. Frenzel (1965) Der Chemismus der Pseudobrookite von Vulkaniten. Schweiz. Mineral. Petrog. Mitt...composition of naturally occurring minerals with the pseudobrookite structure. Amer. Mineral., 73, 1377-1383. (4) |  | | Journal (article/letter/editorial) | | 1994) to the south and surrounded by Tertiary flood basalt to the west, north and east. The complex consists...rhyolitic welded tuffs and basanite, alkalic olivine basalt and hawaiite (Fig. 1) (Kuepouo, 2004). The FeO*-...Geology FeO*-Al2O3-TiO2-rich rocks from Cameroon basalt by their high density, mode of alteration, submetallic...hematite (Table 1; Fig. 5). Ilmenite or âferro-pseudobrookiteâ may occur in the core of titanomagnetite crystals...and may represent the pseudomorph of ferro-pseudobrookite. Idiomorphic corundum was found associated |  | | Journal (article/letter/editorial) | | 745(+10)oC. In tf- and tx-rich parts of the joins, pseudobrookite has a field of stability above 850(+10)oC and... PHASE RELATIONS OF TITAN-ACMITE Picture Gorge Basalt (Lindsley and Haggerty, 1970) wherethe effectsof...narsarsukite (nars), ramsayite (rams), hematite (hm), pseudobrookite (ps), freudenbergite (fr) and rutile (ru)....acmite-jadeiteand jadeite-tx are coplanar. 53E MARTIN F. I. FLOWER Tasln l. Selected Results from Experiments...expressedby the equation: 540 t o el o , : 7 . 3 4- MARTIN q?6s ; /p - + 0.0051\- r F. ], FLOWER r\ |  | | Journal (article/letter/editorial) | | label also includes zircons observed in an alkali basalt lava flow described as primary by Carbonnel and...Material 612 followed by two analyses of BCR2G basalt glass standard with ten unknowns in between. The...maghemite (cFe2O3) and pseudobrookite (Fe2TiO5) (Table 5). The pseudobrookite (P) occurs in very small...all the other crystals contain maghemite and pseudobrookite, but Al is included in various exsolutions...50 lm. Spinel (S), titanomaghemite (T) and pseudobrookite (P). Analyses from this crystal are labelled* |  | | Journal (article/letter/editorial) | | petrologically from t h a t exposed in the upper quarry. The officers of the Geological Survey recognized...Exeter district. These rocks were also described in the Survey Memoir on the Plymouth district (Ussher...filled with copper-stained carbonates. In Pocombe quarry two main facies with transitional terms are distinguished...This facies is typically developed at Woolsgrove quarry. The Knowle Hill facies is a phanerocrystalline...occurs at School Wood quarry (at C on fig. 2). At an intermediate level in the quarry, the lava has developed |  | | Journal (article/letter/editorial) | | Synthetic armalcolite and pseudobrookite A. YA. MEOVEDEV Institute of Geochemistry, PB. 4019, 664033...664033 Irkutsk, Russia Abstract Armalcolite and pseudobrookite have been crystallized from synthetic melts...that the composition of the armalcolite and pseudobrookite are dependent on the TiO2 content of the melt...of formation. The maximum A1203 content of pseudobrookite appears to be ~ 1 4 - 1 5 wt.% A1203, a spinel-like...low pO2 and pseudobrookite at higher oxygen fugacities. KEvworms: armalcolite, pseudobrookite, synthetic |  | | Journal (article/letter/editorial) | | olivine, diopside, apatite, magnetite, and pseudobrookite. The presence and modal abundance of the K2O-bearing...ultrapotassic basanite potassic olivine basalt / : } _ alkali Vi olivine basalt Fio. 1. Distribution of basaltic...slightly enlarged for clarity. The Devils Postpile basalt flow at the eastern margin of the field area yields...ultrapotassic basanite in the west to alkali olivine basalt in the east (Fig. 2). From west to east, K2O decreases...diopside phenocrysts, magnetite, needle-like pseudobrookite, apatite, and ± olivine (Fig. 3). The phlogopite |  | | Journal (article/letter/editorial) | | Texas 78712 Abstract Crystalsof hematite,pseudobrookite, bixbyite,and cassiterite occur in cavitieswithin...oxide minerals including hematite, bixbyite, pseudobrookite, and cassiterite(Lufkin, 1972, 1974;Lufkin...hematite-cassiterite,hematite-pseudobrookite, and bixbyite-pseudobrookite, are common. This suite of oxide...cassiterite(Staatz and Carr, t964). Pseudobrookite Pseudobrookite(FerTiOb)occursas black, acicular crystafs...crystallographicallydifferent series,e.g., pseudobrookite(orthorhombic) and hematite. And, if hematite |  | Burt, Donald M., Sheridan, Michael F., Bikun, James V., Christiansen, Eric H. (1982) Topaz rhyolites; distribution, origin, and significance for exploration. Economic Geology, 77 (8) 1818-1836 doi:10.2113/gsecongeo.77.8.1818 | Journal (article/letter/editorial) | | commonlyassociated with MnFe garnet, bixbyite, pseudobrookite, specularite,quartz, and other minerals.In...beryllium depositswere discoveredin this same district (Shawe, 1968). Since these early discoveries,Cenozoic...exploOn a local scale, as in the Spor Mountain district, sively, unlessassistedby interactionswith ground...('--180 kmâą) plagioelase (25%);topaz,bixbyite,pseudobrookite, eassiterite, garnet, red beryl; contemporaneous...Creek, west-central Arizona Rhyolitewith topaz,pseudobrookite, bixbyite,and garnetin 1972, 1976, 1977; Correa |  | Ejima, T., Akasaka, M., Nagao, T., Ohfuji, H. (2015) Occurrence of Fe3+ and formation process of precipitates within oxidized olivine phenocrysts in basalt lava from Kuroshima volcano, Goto islands, Nagasaki, Japan. Mineralogical Magazine, 79 (7) 1833-1848 doi:10.1180/minmag.2015.079.7.08 | Journal (article/letter/editorial) | | precipitates within oxidized olivine phenocrysts in basalt lava from Kuroshima volcano, Goto islands, Nagasaki...2014; Accepted 10 March 2015; Associate Editor: Martin Lee] ABSTR ACT The oxidation state of Fe and precipitates...precipitates within olivine phenocrysts from an olivine-basalt from Kuroshima volcano, Goto Islands, Nagasaki...: olivine, precipitates, oxidation state of Fe, basalt, high-temperature oxidation, 57 Fe Mössbauer...have also been studying olivine phenocrysts in basalt lavas at Kuroshima volcano, in the Goto Islands |  | | Journal (article/letter/editorial) | | 1200-1215° in the cores and 1150-1160° in the rims. Pseudobrookite was discovered associated with ilmenite in...Rock-Forming and Accessory Minerals in Gabbro-Norite Pseudobrookite Orthopyroxene core rim Chrome spinel SiO2...mineral phase of the pseudobrookite series (Figs. 3 and 4, and Table). Pseudobrookite, a com plex Fe-Ti...of high-tempera ture oxidation of ilmenite in basalt, rhyolite, ignimbrite, and high-temperature contact...aureoles [8]. High-titanium pseudobrookite has been found in lunar basalt and has been reported in lamproite |
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Basalt quarry, Pauliberg, Markt Sankt Martin, Oberpullendorf District, Burgenland, Austria