 | Ejima, Terumi, Osanai, Yasuhito, Akasaka, Masahide, Adachi, Tatsuro, Nakano, Nobuhiko, Kon, Yoshiaki, Ohfuji, Hiroaki, Sereenen, Jargalan (2018) Oxidation States of Fe in Constituent Minerals of a Spinel Lherzolite Xenolith from the Tariat Depression, Mongolia: The Significance of Fe3+ in Olivine. Minerals, 8 (5) 204 doi:10.3390/min8050204 | Journal (article/letter/editorial) | | Xenolith from the Tariat Depression, Mongolia: The Significance of Fe3+ in Olivine Terumi Ejima 1, *...of Science and Technology, Ulaanbaatar 14191, Mongolia; jargalan62@yahoo.com Correspondence: tejima@shinshu-u... Abstract: The oxidation states of Fe within olivine, orthopyroxene, clinopyroxene, and spinel in a...spinel lherzolite xenolith from the Tariat Depression, Mongolia were investigated using 57 Fe Mössbauer...redox condition of the upper mantle from which the Tariat spinel lherzolite xenolith was derived. The purity |  | | Journal (article/letter/editorial) | | Terrestrial samples comprise mineral separates of olivine, clinopyroxene and orthopyroxene extracted from...Hole (USA), Vitim (Russia), Atsagin-Dush and Tariat (Mongolia). Additionally, three lherzolites and one...missions: high-Ti mare basalts, picritic glasses, olivine-, ilmenite- and quartznormative basalts as well...Ionov et al. [25]. Samples from Atsagin-Dush, Mongolia, were previously described in detail by Wiechert...for which Li concentration and isotope data for olivine and orthopyroxene were acquired. 852012, -19 and |  | | Journal (article/letter/editorial) | | Bereya alkali picrite tuff in the Vitim volcanic province of Transbaikalia consist of garnet lherzolite..., 1992. and the Shavaryn–Tsaram volcano in the Tariat field ŽPress et al., 1986; Stosch et al., 1986...plateau area started with the eruption of alkali olivine basalts in the Miocene and continued through the...located towards the eastern edge of the Vitim province, and a KrAr age of 16.3 Ma is reported by Esin...chemistry 2. Geological setting The Vitim volcanic province is located about 200 km east of Lake Baikal ŽFig |  | | Journal (article/letter/editorial) | | altered peridotite xenoliths from the Hessian Depression (Northwest Germany) GERALD HARTMANNand K. HANS...from 7 occurrences of Tertiary alkali olivine basalt and olivine nephelinite have been investigated for...ratios of the alkali basalts from the Hessian Depression vary between 0.7032 and 0.7036 with an average...peridotite which has produced normal mid-ocean ridge basalt (MORB). The average *7Sr/*“Sr of MORB, as reported...form the alkali basaltic magmas of the Hessian Depression was probably not very far from the source of |  | | Journal (article/letter/editorial) | | basalts and peridotite xenoliths from the Hessian Depression (NW Germany), reflecting mantle compositions...total of 17 alkali basalts (alkali olivine ba- salt, limburgite, olivine nephelinite) and quartz tholeiites...radiogenic than that of the basalts from the Hessian Depression. Nd and Sr isotopic compositions of all rocks...The volcanic activity of the northern Hessian Depression, which represents the most northern subprovince...alkali olivine basalts with a climax 13 to 14 Ma ago, and then nepheline basanites and olivine nephelinites |  | | Journal (article/letter/editorial) | | yielded an age that would correspond to the time of basalt eruption (21–2.35 Ma or younger). The youngest...Late Mesozoic–Cenozoic West Transbaikal volcanic province. The volcanic fields are controlled here by a...1520 1490 P, kbar 37.9 63.6 48.6 Note: (Ol) olivine, (Opx) orthopyroxene, (Cpx) clinopyroxene, (Sp)...eruptions. Igneous rocks are comprised of subalkali olivine basalt, basanite, and limburgite. Objects of study...that would correspond to the time of Late Cenozoic basalt eruption (21–2.35 Ma and younger). The youngest |  | | Journal (article/letter/editorial) | | upper mantle underlying the Cenozoic volcanic province of western (WEVP) and central Europe (CEVP) (Fig...compositions of their clinopyroxenes, their host basalt, and basalts from two other Rhön localities. It...480 The Tertiary–Quaternary European volcanic province surrounds the Alps from SW France to Hungary and...amphibole-free nepheline basanites, alkali olivine basalts, olivine nephelinites, nephelinites), and highly...are abundant in several outcrops of alkali olivine basalt, and have been described since the beginning |  | | Journal (article/letter/editorial) | | (garnet, spinel, clinopyroxene, orthopyroxene, olivine) involved during the partial melting of peridotite...komatiite Sc basalt Sc komatiite Yb basalt peridotite Clinopyroxene picrite basalt basalt Yb V Sc Sc...Sc Yb basalt Yb Ab-An-Di V basalt V Olivine basalt chondrule basalt chondrule komatiite Sc Sc Yb Yb...picrite chondrule chondrule basalt Sc Sc Yb Yb chondrule Fo-An-Di synthetic basalt V Sc Sc Yb Spinel synthetic...along the western margin of the Archean Slave Province (Bostock, 1998; Cook et al., 1998). In this light |  | | Journal (article/letter/editorial) | | carbonatite melt in olivine; d s basaltic melt in olivine; e s Fe–Ni–S melt in olivine. f s estimated from...2 O-pyroxene Watson and Lupulescu Ž1993. H 2 O-olivine Mibe et al., 1998 brine–calcite Holness and Graham...spectrum of textural states is given by dendritic olivine grains which grew during solidification of komatiite...sub-solidus textural adjustment. The shapes of the olivine grains are very close to the original shape controlled...equilibrium. Although dendritic olivine crystals are known to grow in highly olivine normative melts at cooling |  | | Journal (article/letter/editorial) | | et al., 1998). The volcanic rocks are alkali olivine basalt, basanite, and nephelinite that were erupted...followed by quiet flows. 2.1.2. Mingxi The Mingxi basalt locality lies within the Proterozoic Cathaysia...northwestern part of Fujian Province. The Cenozoic basaltic volcanism in Fujian Province is small in volume and... it appears that the alkali basalts in Fujian Province are related to the deep, northeast-trending faults...and is generally vesicular. Daughter crystals of olivine, clinopyroxene and spinel may be present in the |  | | Journal (article/letter/editorial) | | For the determination of the low Ca contents in olivine, beam current and counting time were increased...and consist of spinel harzburgite and veins of olivine clinopyroxenites, a few centimetres in width, characterized...clinopyroxene reflecting the chemical interaction between olivine clinopyroxenite veins and spinel peridotites from...the Tertiary voicanics represent an alkali-olivine-basalt suite. The Tertiary volcanic field overlaps...melt in equilibrium with the pyroxenites 100 • basalt o cpx-megacryst • hornblendite T3 I 10 |  | | Journal (article/letter/editorial) | | subalkalic and alkalic basalt; Neogene alkalic basalt with minor amounts of tholeiitic basalt; and Quaternary...Quaternary alkalic with subsidiary tholeiitic basalt (Con & Zhang, 1983; Liu et al, 1983; Zhao et al, 1983; Wu...Neogene and Quaternary alkali basalts (alkali olivine basalt, basanite, nephelinite) but they are not found...association of ultramafic xenoliths with alkali basalt but not with tholeiitic basalts is well recognized...Cao & Zhu, 1987). Mica (phlogopite and biotite)-olivine clinopyroxenite has Downloaded from http://petrology |  | | Journal (article/letter/editorial) | | importance for mantle enrichment processes and basalt petrogenesis ŽSuen and Frey, 1987; O’Reilly and...and basaltic andesite with subordinate high-Ti olivine tholeiite; Ž2. a Late Miocene stage Ž; 8 Ma. characterized...characterized by eruptions of basanite to alkali–olivine basalt and olivine tholeiite; Ž3. a Plio–Pleistocene stage...Kel — kelyphite after garnet, Sp — spinel, Olv — olivine, Ilm — ilmenite, phl — phlogopite, Amph — amphibole...Sp–Cpx–Phl–Amph-bearing Opx segregations in an olivine matrix ŽFig. 6b.. More detailed trends of chemical |  | | Journal (article/letter/editorial) | | Mineral compositions vary systematically with modal olivine content, with Fe and Ti contents in spinel and...clinopyroxene increasing with decreasing modal olivine. Cr-diopside group xenoliths have porphyroclastic...wehrlite, and clinopyroxenite from a Tahitian picritic basalt can generate most of the chemical variations observed...the upper mantle, perhaps from mid-ocean-ridge basalt extraction. The LREE enrichment in clinopyroxene...group has higher Fe and Ti contents, textures for olivine-poor rocks are commonly igneous in origin, and |  | | Journal (article/letter/editorial) | | include spinel lherzolites, spinel harzburgites and olivine websterites. They exhibit coarse granular or protogranular...mineral phases typical of upper mantle origin: olivine (Fo89 –Fo91.5 , NiO = 0.29–0.38 wt%, CaO = 0.02–0...(Cr#Sp = 19–33.6). The lherzolites are composed of olivine (48–58%), orthopyroxene (22–30%), and clinopyroxene...clinopyroxene (8–15%). The harzburgites modes are olivine (60–81%), orthopyroxene (11–29%), and clinopyroxene...composed of pyroxene (∼62%) with variable amounts of olivine (23–31%). Temperatures of mineral equilibration |  | | Journal (article/letter/editorial) | | see lithium; potassium; ium; sodium alkali olivine basalt geochemistry 27(I) 43-57 Aleutian Islands...alkalic amphibole alkali basalts see also alkali olivine basalt; ankaratrite; basanite; hawaiite; mugearite;...225-234; 24(l) 3-19 Japan6(1)41-51 Kenya 8( 1) 47-58 Mongolia 36(3-4) 227-242 tectonophysics 36(3-4) 243-255...essexite; ijolite; leucitite; melteigite; nephelinite; olivine nephelinite alkali granites India, geochemistry...17-2.5 Italy, metasomatism 24( I) 3- 19 alkalic basalt see alkali basalts alkalic granite see alkali granites |  | | Book | | rift. Farther south and west, the Basin and Range Province stretches across southern New Mexico, southern.......265 C h a p t e r 7. The Basin and Range Province T. Parsons 7.1. Introduction ...................279 7.2. Significance of the Basin and Range Province in reference to worldwide rifting ..............Seismic Reflection Profiling in the Basin and Range Province ................................................continental rift to be "an elongate tectonic depression associated with which the entire lithosphere |  | | Book | | 246 251 254 267 Gabbros Gabbro-norites Norites Olivine gabbros Troctolites Anorthosites Eclogites Summary...lamproites), gabbros (gabbro, gabbronorites, norites, olivine gabbro, troctolites, and anorthosites), and their...analyses have been carried out on orthopyroxene, olivine, plagioclase, garnet, amphiboles, chromespinel...of the regularities of the REE distribution in olivine, orthopyroxene, clinopyroxene, plagioclase, amphibole...Precambrian gabbroid and other towns from the Barberton province in South Africa were presented (Goles, 1968). |  | | Book | | increasing pressure with depth; phase changes in olivine are widely considered to be responsible for discontinuities...low velocity zones beneath the Basin and Range province (Benz and McCarthy, 1994), and the western Canadian...stratigraphy below Yellowknife region (YKA) in the Slave province as determined from Ps converted phases (Bostock...near-horizontal set underlying much of the western Slave province which the teleseismic observations identify as...for the H layer (Fig. 2) below the Archean Slave province on the basis of a strongly anisotropic signature |  | | Book | | composed of relatively dense rock types such as basalt and is young (#200 Ma old) (see Chapter 3.13)....(1985), which was derived from a 50 : 50 mixture of basalt : tonalite (Taylor and McLennan, 1981) and is similar...anisotropic with respect to seismic-wave speeds (e.g., olivine, sillimanite, mica (Christensen, 1982)), which...rocks with such anisotropic minerals occur there. Olivine is not commonly stable in the deep crust, but other...North America Nunivak Island, Alaska Central Slave Province, Canada Host Xenolith types Types of analyses |  | | Report (volume) | | siderophile element and 187Os signatures in non-cratonic basalt-hosted peridotite xenoliths: Unravelling the origin...Siderophile Element and 187Os Signatures in Non-cratonic Basalt-hosted Peridotite Xenoliths: Unravelling the Origin...ISOTOPE SYSTEM AND THE FORMATION OF MID-OCEAN RIDGE BASALT (MORB) ..........................................concentrated along the boundaries of skeletal olivine crystals that formed during quenching. These particles...consistent with the crystalmelt partitioning of Ru in olivine and spinel, that also suggest Ru3+ is present over |  | | Book | | nitride Ti-, Fe-, Zr-, Mo-carbides Kamacite, iron Olivine 19 tiny subgrains inside of graphite spheres...some magnetite. High temperature phases such as olivine and pyroxene are frequently found (Dodd, 1981)...silicates in the ISM indicates that they have an olivine-type stoichiometry where the depletions are largest...inclusions (Ca – Al-rich inclusions (CAIs) and amoeboid olivine aggregates (AOAs)), and fine-grained matrix material...an increase in the Fe/(Fe þ Mg) ratios of their olivine and pyroxene. For carbonaceous chondrites, oxidation |
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