Watters, T. R. & Prinz, M (1979) Aubrites - Their origin and relationship to enstatite chondrites. In: Lunar and Planetary Science Conference, 10th, Houston, Tex., March 19-23, 1979, Proceedings. Volume 1. (A80-23557 08-91) New York, Pergamon Press, Inc., 1979, p. 1073-1093.

Reference Search (possible matching items)

	*Graham, A. L., Easton, A. J., Hutchison, R. (1977) The Mayo Belwa meteorite: a new enstatite achondrite fall. Mineralogical Magazine, 41 (320) 487-492 doi:10.1180/minmag.1977.041.320.10*	Journal (article/letter/editorial)
	DECEMBER 1 9 7 7 , VOL. 4 I , PP. 487-92 The Mayo Belwa meteorite: a new enstatite achondrite fall A. L. GRAHAM...(Natural History), London SW7 5BD SUMMARY.Mayo Belwa, a highly shocked enstatite achondrite, fell during...the evening of 3 August I974 in the Adamawa District, NE. Nigeria (8~ 58' N., 12~ o5' E.). The stone weighed...and was deposited in the Geological Survey of Nigeria and loaned for study to the British Museum (Natural...I-2 % Si and the troilite contains lq ~ Ti. The meteorite possesses vuggy cavities, which contain fluor-amphibole
	*Graham, A.L. (1978) METAL AND SCHREIBERSITE IN MAYO BELWA, AN ENSTATITE ACHONDRITE. Meteoritics, 13 (2) 235-244 doi:10.1111/j.1945-5100.1978.tb00813.x*	Journal (article/letter/editorial)
	METAL AND SCHREIBERSITE IN MAYO BELWA, AN ENSTATITE ACHONDRITE A.L. Graham Department ofMineralogy British...Museum (Natural History) London SW7 5BD The Mayo Belwa meteorite (an aubrite} contains discrete metal grains...are distributed heterogeneously throughout the meteorite and are present both in the fine-grained matrix... The Mayo Belwa meteorite is a brecciated enstatite achondrite (aubrite) which fell in Nigeria in August...and form the subject of the present paper. The meteorite is composed mainly of disordered enstatite, WOo
	*(1977) Alphabetical Index. Mineralogical Magazine, 41 (320) 559-565 doi:10.1180/minmag.1977.041.320.32*	Journal (article/letter/editorial)
	of a metallic nodule from the Bondoc Peninsula meteorite, I21 (Syn.), MI Bad na h'Achlaise, Assynt, Sutherland...BATTEY (M. H.) and DAVIDSON (W.), Exsolution of plagioclase from clinopyroxene in a pyroxenite from Jotunheimen...), and FRANCIS (J. G.), Amphibole in the Mayo Belwa meteorite, 53I BEVAN (J. C.), see BEVAN (A. W. R.)...anal., opt., cryst., Xray, 398 Bondoc Peninsula meteorite, metallic nodule with silicate inclusions, anal...stevensite, 443 Broken Hill, New South Wales, plagioclase, 469; gneiss, M2o BROWN (G. M.) and PECKETT (A
	*RUBIN, Alan E. (2010) Impact melting in the Cumberland Falls and Mayo Belwa aubrites. Meteoritics & Planetary Science, 45 (2) 265-275 doi:10.1111/j.1945-5100.2010.01022.x*	Journal (article/letter/editorial)
	x Impact melting in the Cumberland Falls and Mayo Belwa aubrites Alan E. RUBIN* Institute of Geophysics...when it collided with the Cumberland Falls host. Mayo Belwa is the ﬁrst known aubrite impact melt breccia...subhedral enstatite grains embedded in sodic plagioclase. Numerous vugs, ranging from a few micrometers...constitute 5 vol% of the meteorite. They occur nearly exclusively within the Mayo Belwa matrix; literature...impact melt breccias. It seems likely that in Mayo Belwa, volatiles were vaporized during an impact event
	*Graham, A.L., Henderson, P. (1985) RARE EARTH ELEMENT ABUNDANCES IN SEPARATED PHASES OF MAYO BELWA, AN ENSTATITE ACHONDRITE. Meteoritics, 20 (1) 141-149 doi:10.1111/j.1945-5100.1985.tb00853.x*	Journal (article/letter/editorial)
	EARTII ELEMENT ABUNDANCES IN SEPARATED PHASES OF MAYO BELWA, AN ENSTATITE ACHONDRITE A.L. Grabam and P. Henderson... SW7 SBD. U.K. Separated fractions from the Mayo Belwa aubrite have been analysedfor the rare earth...account for the total REE abundances in the bulk meteorite which are about 0.5 times chondritic. The REE...ofthe feldspar is greater than that ofthe bulk meteorite. The partition coefficients for the REE between...to the enstatite chondrites and indeed these meteorite groups have very similaroxygen isotopic systematics
	*(2023) Richterite. Handbook of Mineralogy. Mineralogical Society of America*	Report (issue)
	8:00 O 22 [(OH)0: 81 F 0:57 ] §=1:38 : (2) Mayo Belwa meteorite; by electron microprobe, average of three...natrolite, phlogopite, cristobalite, enstatite, plagioclase. Distribution: A few historic localities or sources...and J.G. Francis (1977) Amphibole in the Mayo Belwa meteorite: ¯rst occurrence in an enstatite achondrite
	BURBINE, Thomas H., McCOY, Timothy J., NITTLER, Larry R., BENEDIX, Gretchen K., CLOUTIS, Edward A., Dickinson, Tamara L. (2002) Spectra of extremely reduced assemblages: Implications for Mercury. Meteoritics & Planetary Science, 37 (9) 1233-1244 doi:10.1111/j.1945-5100.2002.tb00892.x	Journal (article/letter/editorial)
	surface could have a composition ofenstatite, plagioclase, diopside, and sulfide, similar to the mineral...by high modal abundances (-90 vol%) of calcic plagioclase with accessory Fe-rich pyroxenes and olivines...believed to have originated by flotation of plagioclase from a global magma ocean (e.g., Wood et ai....primarily of enstatite, metal, sulfides, and plagioclase. This precursor material would then have experienced...pyroxenes (such as enstatite and diopside) and plagioclase. The removal of this crust would expose an enstatite-dominated
	Floss, Christine, Crozaz, Ghislaine (1993) Heterogeneous REE patterns in oldhamite from aubrites: Their nature and origin. Geochimica et Cosmochimica Acta, 57 (16) 4039-4057 doi:10.1016/0016-7037(93)90352-w	Journal (article/letter/editorial)
	the aubrites. Literature data even for the same meteorite often disagree. Whole-rock REE analyses by STRAIT...sometimes attributed to the presence of excess plagioclase (STRAIT, 1983), although Eu is not always correlated...studies involving several samples from the same meteorite ( OKADA et al., 1988; KEIL et al., 1989). NEWSOM...aubrites with a two-component (enstatite and plagioclase) mixing model, the addition of a third component...In an investigation of mineral separates from Mayo Belwa, GRAHAM and HENDERSON ( 1985) reported a “magnetic”
	Floss, Christine, Strait, Melissa M., Crozaz, Ghislaine (1990) Rare earth elements and the petrogenesis of aubrites. Geochimica et Cosmochimica Acta, 54 (12) 3553-3558 doi:10.1016/0016-7037(90)90304-4	Journal (article/letter/editorial)
	patterns extends to d&rent samples from the same meteorite. STRAIT ( 1983) found positive Eu anomalies for...studies involving several samples from the same meteorite ( OKADA et al., 1988; KEIL et al., 1989). An investigation...Bishopville with a two-component (enstatite and plagioclase) mixing model, the addition of a third component...straightforward results. Analyses of mineral separates from Mayo Belwa (GRAHAM and HENDERSON,1985) showed that a “magnetic”...COHEN, 1967), with minor fomterite, diopside, plagioclase, troilite, and metal and a number of rare trace
	*Keil, Klaus (2010) Enstatite achondrite meteorites (aubrites) and the histories of their asteroidal parent bodies. Geochemistry, 70 (4) 295-317 doi:10.1016/j.chemer.2010.02.002*	Journal (article/letter/editorial)
	nearly FeO-free enstatite, with minor albitic plagioclase, nearly FeO-free diopside and forsterite, metallic...lithologies, which should have contained 10 vol% plagioclase, then meteorites of enstatiteplagioclase basaltic...and of nearly FeO-free enstatite, perhaps with plagioclase, diopside and sulﬁde. While known aubrites clearly...alert to the potential discovery of a genuine meteorite from Mercury which, superﬁcially, should resemble...and, if true, a meteorite from Mercury should not resemble any currently known meteorite type. & 2010 Elsevier
	*Rubin, Alan E. (2015) Shock and annealing in aubrites: Implications for parent-body history. Meteoritics & Planetary Science, 50 (7) 1217-1227 doi:10.1111/maps.12464*	Journal (article/letter/editorial)
	chondrite impact-melt breccia (Rubin 2010). The Mayo Belwa whole rock is itself an impact-melt breccia containing...constituent minerals—olivine, orthopyroxene, and plagioclase. Meteorites containing these phases can be ranked...stage S1 samples, olivine, orthopyroxene, and plagioclase grains have either no fractures or irregular...extinction at S4, and strong mosaic extinction at S5. Plagioclase exhibits undulose extinction at S2 and S3, becomes...into the high-pressure polymorph majorite; and plagioclase may undergo extensive melting and mobilization
	Rubin, Alan E., Wasson, John T. (2011) Shock effects in “EH6” enstatite chondrites and implications for collisional heating of the EH and EL parent asteroids. Geochimica et Cosmochimica Acta, 75 (13) 3757-3780 doi:10.1016/j.gca.2011.04.002	Journal (article/letter/editorial)
	olivine and low-Ca pyroxene compositions, and many plagioclase grains that exceed 50 lm. (Olivine is absent...weathering category A (Meteorite Newsletter 15), Y-980223 is listed as category A/B (Meteorite Newsletter 16)...cardboard slides. For standards we used the Allende meteorite (Jarosewich et al., 1987), the USGS international...1994), and the North Chile (Filomena) IIAB iron meteorite. Analyses were carried out following a protocol...enstatite chondrites Source No. of grains Silicaa Plagioclase Source: 1 = this study; 2 = Lin and Kimura (1998)
	Okada, Akihiko, Keil, Klaus, Taylor, G. Jeffrey, Newsom, Horton (1988) Igneous History of the Aubrite Parent Asteroid: Evidence from the Norton County Enstatite Achondrite. Meteoritics, 23 (1) 59-74 doi:10.1111/j.1945-5100.1988.tb00897.x	Journal (article/letter/editorial)
	plutonic pyroxenites (the pyroxenitic clasts), and plagioclase-silica rocks (like the feldspathic clasts). Presence...(the microporphyritic clasts and the diopside-plagioclase-silica clast) of still different compositions...Pefia Blanca Spring (Lonsdale, 1947); 4 em in Mayo Belwa (Graham et al., 1977); 8 em in Norton County...clast (3), and bulk composition ofthe diopside-plagioclase-silica clast (4) in Norton County. SiO, TiO...BHVO-I (Gladney et al., 1983) and the Allende meteorite reference sample (larosewich et al., 1987) (used
	Floss, C., Jolliff, B. L., Benedix, G. K., Stadermann, F. J., Reid, J. (2007) Hammadah al Hamra 193: The first amphibole-bearing winonaite. American Mineralogist, 92 (4) 460-467 doi:10.2138/am.2007.2253	Journal (article/letter/editorial)
	grains enclosing smaller grains of olivine and plagioclase. It also contains large (up to 2 mm) poikilitic...grains of amphibole enclosing clinopyroxene, plagioclase, olivine, and occasionally orthopyroxene, which...via a reaction in which diopside, olivine, and plagioclase form fluoro-edenite. Trace-element data are consistent...formation of fluoro-edenite from clinopyroxene and plagioclase. Fluoro-edenite has a REE pattern similar to...Na, K, and Ba, elements typically enriched in plagioclase. The source of the F is uncertain, but may be
	Abreu, Neyda M. (2013) A unique omphacite, amphibole, and graphite-bearing clast in Queen Alexandra Range (QUE) 99177: A metamorphosed xenolith in a pristine CR3 chondrite. Geochimica et Cosmochimica Acta, 105. 56-72 doi:10.1016/j.gca.2012.11.041	Journal (article/letter/editorial)
	which could have only been preserved if this meteorite was not subjected to any signiﬁcant thermal metamorphism...chondrules, homogeneous olivines and pyroxenes, and plagioclase crystals with sizes that increase from petrologic...have only been identiﬁed in clasts in one other meteorite, the LL3.1 ordinary chondrite Krymka (e.g., Semenenko...analysis by the Johnson Space Center Antarctic Meteorite Collection. QUE 99177 was classiﬁed as Antarctic...clast is coarser-grained than matrix in the host meteorite. It contains olivine, amphiboles, sulﬁdes, and
	*Rubin, Alan E. (2015) Impact features of enstatite-rich meteorites. Geochemistry, 75 (1) 1-28 doi:10.1016/j.chemer.2014.09.001*	Journal (article/letter/editorial)
	Aubrites Shock effects Asteroidal parent bodies Meteorite breccias Impact melting Sinoite a b s t r a c...impact-melt globules and spherules. No single meteorite possesses all of these features, although many...history (4.50–4.54 Ga ago); only one enstatite-rich meteorite (EH4 Bethune) appears to have been impact heated...based mainly on shock effects in olivine and plagioclase and was veriﬁed by shock recovery experiments...exhibited by olivine (if present), orthopyroxene, plagioclase and the whole rock; higher shock-stage values
	*Keil, Klaus (1989) Enstatite meteorites and their parent bodies. Meteoritics, 24 (4) 195-208 doi:10.1111/j.1945-5100.1989.tb00694.x**	Journal (article/letter/editorial)
	Aubrites represent samples from a third enstatite meteorite parent body. 3. The aubrite parent body may have...contents oftitanium and diopside, and possibly less plagioclase than known enstatite chondrites. 5. Shallowater...Shallowater may be a sample from yet a fourth enstatite meteorite parent body. 6. Shallowater experienced a complex...reassembly. 7. It is unknown why some enstatite meteorite parent bodies melted (the aubrite and Shallowater...Tucson iron meteorite which had previously been thought to be related to the enstatite meteorite clan (Nehru
	LIN, Y., KIMURA, M. (1998) Petrographic and mineralogical study of new EH melt rocks and a new enstatite chondrite grouplet. Meteoritics & Planetary Science, 33 (3) 501-511 doi:10.1111/j.1945-5100.1998.tb01654.x	Journal (article/letter/editorial)
	for analysis of alkali-bearing phases (e.g., plagioclase, phlogopite and phase A/B). The x-ray overlaps... which suggest crystallization from a melt. Plagioclase (up to 20-30 pm) and a silica mineral are also...observed in orthoenstatite and plagioclase in Y8414 and in plagioclase in Y-8404 but is rare in orthoenstatite...in this study were selected from the Antarctic meteorite collection of the National Institute of Polar...chondrites, normalized to 100 vol% Points Enstatite Plagioclase Silica Phlogopite Fe- Ni Metal Schreibersite
	*RUBIN, Alan E. (1997) Mineralogy of meteorite groups. Meteoritics & Planetary Science, 32 (2) 231-247 doi:10.1111/j.1945-5100.1997.tb01262.x*	Journal (article/letter/editorial)
	Society, 1997. Printed in USA. Mineralogy of meteorite groups ALANE. RUBIN Institute of Geophysics and...chondrites contain major olivine, pyroxene and plagioclase; major opaque phases include metallic Fe-Ni,...chondrites and achondrites contain.major enstatite, plagioclase, free silica and kamacite as well as nitrides...iron meteorites consist of mafic silicates, plagioclase and various sulfides, oxides and phosphates....compositions and consist of major pyroxene and calcic plagioclase and several accessory oxides. Ureilites are made
	Semenenko, Vira P., Girich, Aelita L., Nittler, Larry R. (2004) An exotic kind of cosmic material: graphite-containing xenoliths from the Krymka (LL3.1) chondrite. Geochimica et Cosmochimica Acta, 68 (3) 455-475 doi:10.1016/s0016-7037(03)00457-5	Journal (article/letter/editorial)
	individual sample N 1290/29 (catalogue number of the meteorite collection of the Museum of Natural History, NAS...shocked more intensively than the rest of the meteorite and contains regions of completely shock-melted... Olivine is light-grey, pyroxenes are grey, plagioclase is dark-grey and graphite crystals are black...Discontinuous Olivine, pyroxenes, feldspatic plagioclase Graphite (crystals) Fa31.2; Fs23.2; Fs10.7Wo43...and consist of olivine and/or pyroxenes and plagioclase. Small silicate grains (ⱕ10 ␮m) are monomineralic
	*(2011, June 12th) Heritage Nature & Science Auction* 6071. Heritage Auctions**	Catalog/List
	PYRITE Huanzala Mine, Huallanca District, Dos de Mayo Province, Huánuco Department, Peru For hundreds...RED MATCHED PAIR — 17.26 TCW Ofiki, Oyo State, Nigeria Rubellite is a particularly beautiful gemstone...referred to as Libyan Desert Glass, resulted from a meteorite impact; the heat and force of which sent debris...online, visit HA.com/6071 49203 GENTLEMAN’S METEORITE WATCH Muonionalusta – fine (IVA) octahedrite Northern...etched section of the famed Swedish Muonionalusta meteorite. The incredible criss-crossing crystal lines of
	*(1978) ABSTRACTS OF PAPERS. Meteoritics, 13 (4) 363-677 doi:10.1111/j.1945-5100.1978.tb00088.x*	Journal (article/letter/editorial)
	the surface, so rapidly that portions of the meteorite and the ground which were in contact were vaporized...people wondered about what would happen if a large meteorite fell to the ground, but they were limited by the...meteorites and the corollary that the size of the meteorite was quite small relative to the crater it could...an equal mass of TNT. The kinetic energy of a meteorite changes with the square of the velocity and hence...far more probable that the angle of impact of a meteorite with earth or moon is low rather than high. Previously
	*Rubin, Alan E., Ma, Chi (2017) Meteoritic minerals and their origins. Geochemistry, 77 (3) 325-385 doi:10.1016/j.chemer.2017.01.005*	Journal (article/letter/editorial)
	the IMACNMNC, including 17 from the Allende CV3 meteorite (Ma, 2015a) and high-pressure phases such as bridgmanite...marialite maskelynite nepheline opal orthoclase plagioclase quartz sanidine seifertite silica with ␣-PbO2...perryite PGE-dominated alloys phlogopite pigeonite plagioclase plagionite platinum pleonaste portlandite po...some cases, coarse grains of forsterite and of plagioclase rimmed by calcic pyroxene crystallized near the...crystallization adjacent to relict grains of plagioclase and calcic pyroxene (Rubin, 2013a). AOI olivine
	*Rubin, Alan, Ma, Chi (2021) Meteorite Mineralogy. Cambridge University Press. doi:10.1017/9781108613767*	Book
	METEORITE MINERALOGY Meteorites are fascinating cosmic visitors. Using accessible language, this book...book documents the history of mineralogy and meteorite research, summarizes the mineralogical characteristics...photographs of meteorite minerals, and with an accompanying online list of meteorite minerals, this book...book provides a useful resource for meteorite researchers, terrestrial mineralogists, cosmochemists,...students in these ﬁelds. a l a n e . r u b i n is a meteorite researcher who recently retired from the University
	*Gomes, Celso B., Keil, Klaus (1980) Brazilian Stone Meteorites. University of New Mexico Press, Albuquerque. 161pp.*	Book
	composition of stone meteorites. How to recognize a meteorite. Brazilian stone meteorites. 7.1. ACHONDRITES...Governador Valadares. 7.1.3. Monomict pigeonite-plagioclase achondrites . . . Ibitira. Serra de Mage.:. 7...chondrite . Parambu. Acknowledgments . References.^.. Meteorite index. Page 1 3 11 29 35 45 47 48 48 48 61 61...during the agglomeration of the meteorite parent bodies. When a meteorite is seen to fall and material is...is collected, the meteorite is referred to as a fall. On the other hand, a meteorite find is the by-chance

Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2024, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: April 26, 2024 03:12:34

Go to top of page

Plagioclase from Mayo Belwa meteorite, Mayo-Belwa, Adamawa, Nigeria

Plagioclase from
Mayo Belwa meteorite, Mayo-Belwa, Adamawa, Nigeria