Bulk chemical compositions of Al-rich objects from Rumuruti (R) chondrites: Implications for their origin

Chemie der Erde

Volumn 70, Issue 1, 2010, Pages 35-53

  Rout, Surya Snata ^a   Keil, Klaus ^b   Bischoff, Addi ^a  

^a UNIVERSITY OF MÜNSTER   (Germany)

^b UNIVERSITY OF HAWAII   (United States)

Author keywords

Al rich chondrules; Calcium aluminum rich inclusions (CAIs); Carbonaceous chondrites; Fassaite bearing spherules; R chondrites

Indexed keywords

AGGLOMERATION; ALUMINUM; CARBONACEOUS CHONDRITE; CHEMICAL ALTERATION; CHEMICAL COMPOSITION; CHONDRITE; CLASSIFICATION; ELECTRON PROBE ANALYSIS; METASOMATISM; MINERALOGY; PARENT BODY; PHASE EQUILIBRIUM; PLAGIOCLASE; SPHERULE;

SPHERULES;

EID: 77950862507     PISSN: 00092819     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.chemer.2009.10.002     Document Type: Article

References (116)

1. Allen J.M., Grossman L., Davis A.M., Hutcheon I.D. Mineralogy, textures and mode of formation of a hibonite-bearing Allende inclusion. Proc. Lunar Planet. Sci. 1978, 9:1209-1233. (abstract).
2. Amelin Y., Krot A.N., Hutcheon I.D., Ulyanov A.A. Lead isotopic ages of chondrules and calcium-aluminum-rich inclusions. Science 2002, 297:1678-1683.
3. Armstrong J.T. Quantitative elemental analysis of individual microparticles with electron beam instruments. Electron Probe Quantitation 1991, Plenum Press, New York, pp. 261-315.
4. Beckett J.R., Grossman L. The origin of type C inclusions from carbonaceous chondrites. Earth Planet. Sci. Lett. 1988, 89:1-14.
5. Beckett J.R., Stolper E. The stability of hibonite, melilite and other aluminous phases in silicate melts: implications for the origin of hibonite-bearing inclusions from carbonaceous chondrites. Meteoritics 1994, 29:41-65.
6. Beckett J.R., Connolly H.C., Ebel D.S. Chemical processes in igneous calcium-aluminum-rich inclusions: a mostly CMAS view of melting and crystallization. Meteorites and the Early Solar System II 2006, University of Arizona Press, Tucson, pp. 399-429.
7. Berlin, J., 2003. Mineralogisch-petrographische Untersuchungen an der chondritischen Breccie Rumuruti. Diploma Thesis, Institute for Mineralogy, Museum für Naturkunde, Berlin, Germany.
8. Binns R.A., Pooley G.D. Carlisle Lakes (a): a unique oxidized chondrite. Meteoritics 1979, 14:349-350. (abstract).
9. Bischoff A. Mineralogical characterization of primitive, type 3 lithologies in Rumuruti chondrites. Meteorit. Planet. Sci. 2000, 35:699-706.
10. Bischoff A., Keil K. Ca--rich chondrules and inclusions in ordinary chondrites. Nature 1983, 303:588-592.
11. Bischoff A., Keil K. Ca-Al-rich chondrules and inclusions in ordinary chondrites: evidence for a related genesis of ordinary and carbonaceous chondrites. Lunar Planet. Sci. 1983, 14:47-48. (abstract).
12. Bischoff, A., Keil, K., 1983c. Catalog of Al-rich chondrules, inclusions and fragments in ordinary chondrites. Special Publication No. 22, University of New Mexico, Institute of Meteoritics, Albuquerque, USA, pp. 1-33.
13. Bischoff A., Keil K. Al-rich objects in ordinary chondrites: related origin of carbonaceous and ordinary chondrites and their constituents. Geochim. Cosmochim. Acta 1984, 48:693-709.
14. Bischoff A., Schultz L. Abundance and meaning of regolith breccias among meteorites. Meteorit. Planet. Sci. 2004, 39:A15.
15. Bischoff A., Keil K., Stöffler D. Perovskite-hibonite-spinel-bearing, refractory inclusions and Ca-Al-rich chondrules in Enstatite chondrites. Meteoritics 1984, 19:193-194.
16. Bischoff A., Keil K., Stöffler D. Perovskite-hibonite-spinel-bearing inclusions and Al-rich chondrules and fragments in enstatite chondrites. Chem. Erde 1985, 44:97-106.
17. Bischoff A., Palme H., Spettel B. Al-rich chondrules from Ybbsitz H4 chondrite-evidence for formation by collision and splashing. Earth Planet. Sci. Lett. 1989, 93:170-180.
18. Bischoff A., Palme H., Ash R.D., Clayton R.N., Schultz L., Herpers U., Stöffler D., Grady M.M., Pillinger C.T., Spettel B., Weber H., Grund T., Endreß M., Weber D. Paired Renazzo-type (CR) carbonaceous chondrites from the Sahara. Geochim. Cosmochim. Acta 1993, 57:1587-1603.
19. Bischoff A., Palme H., Schultz L., Weber D., Weber H.W., Spettel B. Acfer 182 and paired samples, an iron-rich carbonaceous chondrite: similarities with ALH 85085 and relationship to CR chondrites. Geochim. Cosmochim. Acta 1993, 57:2631-2648.
20. Bischoff A., Geiger T., Palme H., Spettel B., Schultz L., Scherer P., Loeken T., Bland P., Clayton R.N., Mayeda T.K., Herpers U., Meltzow B., Michel R., Dittrich-Hannen B. Acfer 217-a new member of the Rumuruti chondrite group (R). Meteoritics 1994, 29:264-274.
21. Bischoff A., Weber D., Bartoschewitz R., Clayton R.N., Mayeda T.K., Spettel B., Weber H.W. Characterization of the Rumuruti chondrite regolith breccia Hughes 030 (R3-6) and implications for the occurrence of unequilibrated lithologies on the R-chondrite parent body. Meteorit. Planet. Sci. 1998, 33:A15-A16. (abstract).
22. Bischoff A., Scott E.R.D., Metzler K., Goodrich C.A. Nature and origins of meteoritic breccias. Meteorites and the Early Solar System II 2006, The University of Arizona Press, Tucson, pp. 679-712.
23. Boynton W.V. Fractionation in the solar nebula-condensation of yttrium and the rare earth elements. Geochim. Cosmochim. Acta 1975, 39:569-584.
24. Brearley, A.J., Jones R.H., 1998. Chondritic meteorites. Planetary Materials-Reviews in Mineralogy, Mineralogical Society of America, Washington, DC, pp. 3-1-3-398.
25. Brigham C.A., Papanastassiou D.A., Wasserburg G.J. Mg isotopic heterogeneities in fine-grained Ca-Al inclusions. Lunar Planet. Sci. 1985, 16:93-94. (abstract).
26. 26Al and Mg isotopic heterogeneity in a fine-grained CAI. Lunar Planet. Sci. 1986, 17:85-86. (abstract).
27. Cohen R.E., Kornacki A.S., Wood J.A. Mineralogy and petrology of chondrules and inclusions in the Mokoia CV3 chondrite. Geochim. Cosmochim. Acta 1983, 47:1739-1757.
28. Davis A.M., Tanaka T., Grossman L., Lee T., Wasserburg G.J. Chemical composition of HAL, an isotopically-unusual Allende inclusion. Geochim. Cosmochim. Acta 1982, 46:1627-1651.
29. Davis A.M., Simon S.B., Grossman L. Alteration of Allende type B1 CAIs: when, where and how. Lunar Planet. Sci. 1994, 25:315-316. (abstract).
30. Fagan T.J., Guan Y., MacPherson G.J. Al-Mg isotopic evidence for episodic alteration of Ca-Al-rich inclusions from Allende. Meteorit. Planet. Sci. 2007, 42:1221-1240.
31. Floss C., El Goresy A., Zinner E., Kransel G., Rammensee W., Palme H. Elemental and isotopic fractionation produced through evaporation of the Allende CV chondrite: implication for the origin of HAL-type hibonite inclusions. Geochim. Cosmochim. Acta 1996, 60:1975-1997.
32. Grossman J.N. The Meteoritical Bulletin, No. 80. Meteorit. Planet. Sci. 1996, 31:A175-A180.
33. Grossman J.N. The Meteoritical Bulletin, No. 82. Meteorit. Planet. Sci. 1998, 33:A221-A239.
34. Grossman J.N. The Meteoritical Bulletin, No. 83. Meteorit. Planet. Sci. 1999, 34:A169-A186.
35. Grossman J.N. The Meteoritical Bulletin, No. 84. Meteorit. Planet. Sci. 2000, 35:A199-A225.
36. Grossman J.N., Zipfel J. The Meteoritical Bulletin, No. 85. Meteorit. Planet. Sci. 2001, 36:A293-A322.
37. Grossman J.N., Rubin A.E., MacPherson G.J. Allan Hills 85085: a unique volatile-poor carbonaceous chondrite with implications for nebular agglomeration and fractionation processes. Earth Planet. Sci. Lett. 1988, 91:33-54.
38. Grossman L. Condensation in the primitive solar nebula. Geochim. Cosmochim. Acta 1972, 36:597-619.
39. Grossman L. Petrography and mineral chemistry of Ca-rich inclusions in Allende meteorite. Geochim. Cosmochim. Acta 1975, 39:433-454.
40. Grossman L., Ganapathy R. Volatile elements in Allende inclusions. Proc. Lunar Planet. Sci. 1975, 6:1729-1736. (abstract).
41. Grossman L., Ganapathy R. Trace elements in Allende meteorite-II. Fine grained Ca-rich inclusions. Geochim. Cosmochim. Acta 1976, 40:149-155.
42. Grossman L., Fruland R.M., Mckay D.S. Scanning electron microscopy of a pink inclusion from the Allende meteorite. Geophys. Res. Lett. 1975, 2:37-40.
43. Grossman L., Ebel D.S., Simon S.B., Davis A.M., Richter F.M., Parsad N.M. Major element chemical and isotopic compositions of refractory inclusions in C3 chondrites: the separate roles of condensation and evaporation. Geochim. Cosmochim. Acta 2000, 64:2879-2894.
44. Grossman L., Ebel D.S., Simon S.B. Formation of refractory inclusions by evaporation of condensate precursors. Geochim. Cosmochim. Acta 2002, 66:145-161.
45. Grossman L., Simon S.B., Rai V.K., Thiemens M.H., Hutcheon I.D., Williams R.W., Galy A., Ding T., Fedkin A.V., Clayton R.N., Mayeda T.K. Primordial compositions of refractory inclusions. Geochim. Cosmochim. Acta 2008, 72:3001-3021.
46. Guan Y., Huss G.R., MacPherson G.J., Leshin L.A. Aluminum-magnesium isotopic systematics of aluminum-rich chondrules in unequilibrated enstatite chondrites. Lunar Planet. Sci. 2002, 33. (abstract #2034).
47. Hinton R.W., Bischoff A. Ion microprobe magnesium isotope analysis of plagioclase and hibonite from ordinary chondrites. Nature 1984, 308:169-172.
48. Hsu W., Huss G.R., Wasserburg G.J. Al-Mg systematics of CAIs, POI, and ferromagnesian chondrules from Ningqiang. Meteorit. Planet. Sci. 2003, 38:35-48.
49. Huss G.R., Wasserburg G.J., Russell S.S., MacPherson G.J. Trace-element abundances and the origin of aluminum-26-bearing chondrules in unequilibrated ordinary chondrites. Meteorit. Planet. Sci. 1997, 32:A63. (abstract).
50. Huss G.R., MacPherson G.J., Wasserburg G.J., Russell S.S., Srinivasan G. Aluminum-26 in calcium-aluminum-rich inclusions and chondrules from unequilibrated ordinary chondrites. Meteorit. Planet. Sci. 2001, 36:975-997.
51. Hutcheon I.D., Newton R.C. Mg isotopes, mineralogy, and mode of formation of secondary phases in C3 refractory inclusions. Lunar Planet. Sci. 1981, 12:491-493. (abstract).
52. Ikeda Y., Kimura M. Anhydrous alteration of Allende chondrules in the solar nebula I: description and alteration of chondrules with known oxygen isotopic compositions. Symp. Antarct. Meteorit. 1995, 19:97-122.
53. Ireland T.R. Correlated morphological, chemical and isotopic charateristics of hibonites from the Murchison carbonaceous chondrite. Geochim. Cosmochim. Acta 1988, 52:2827-2839.
54. 26Mg excesses in a hibonite from the Murchison meteorite. Nature 1987, 327:689-692.
55. Ireland T.R., Zinner E.K., Fahey A.J., Esat T.M. Hibonite bearing microspherules: a new type of refractory inclusion with large isotopic anomalies. Geochim. Cosmochim. Acta 1991, 55:367-379.
56. Ireland T.R., Zinner E.K., Fahey A.J., Esat T.M. Evidence for distillation in the formation of HAL and related hibonite inclusions. Geochim. Cosmochim. Acta 1992, 56:2503-2520.
57. Jäckel A., Bischoff A., Clayton R.N., Mayeda T.K. Dar al Gani 013-a new Saharan Rumuruti-chondrite (R3-6) with highly unequilibrated (type 3) fragments. Lunar Planet. Sci 1996, 27:595-596. (abstract).
58. Jones, R.H., Grossman, J.N., Rubin, A.E., 2005. Chemical, mineralogical and isotopic properties of chondrules: Clues to their origin. In: Chondrites and the Protoplanetary Disc. Astronomical Soceity of the Pacific Conf. Series 341, pp. 251-316..
59. Kallemeyn G.W., Rubin A.E., Wasson J.T. The compositional classification of chondrites: VII. The R chondrite group. Geochim. Cosmochim. Acta 1996, 60:2243-2256.
60. Kimura M., Ikeda Y. Anhydrous alteration of Allende chondrules in the solar nebula II: alkali-Ca exchange reactions and formation of nepheline, sodalite and Ca-rich phases in chondrules. Symp. Antarct. Meteorit. 1995, 19:123-138.
61. Kornacki A.S., Fegley B. Origin of spinel-rich chondrules and inclusions in carbonaceous and ordinary chondrites. J. Geophys. Res 1984, 89(Suppl.):B588-B596.
62. Krot A.N., Keil K. Anorthite-rich chondrules in CR and CH carbonaceous chondrites: genetic link between Ca,Al-rich inclusions and ferromagnesian chondrules. Meteorit. Planet. Sci. 2002, 37:91-111.
63. Krot A.N., Scott E.R.D., Zolensky M.E. Mineralogical and chemical modification of components in CV3 chondrites: nebular or asteroidal processing. Meteoritics 1995, 30:748-776.
64. Krot A.N., Hutcheon I.D., Huss G.R. Aluminum-rich chondrules and associated refractory inclusions in the unique carbonaceous chondrite Adelaide. Meteorit. Planet. Sci. 2001, 36:A105-A106. (abstract).
65. Krot A.N., Hutcheon I.D., Keil K. Plagioclase-rich chondrules in the reduced CV chondrites: evidence for complex formation history and genetic links between calcium-aluminum-rich inclusions and ferromagnesian chondrules. Meteorit. Planet. Sci. 2002, 37:155-182.
66. Krot A.N., Fagan T.J., Keil K., McKeegan K.D., Sahijpal S., Hutcheon I.D., Petaev M.I., Yurimoto H. Ca,Al-rich inclusions, amoeboid olivine aggregates, and Al-rich chondrules from the unique carbonaceous chondrite Acfer 094: I. Mineralogy and petrology. Geochim. Cosmochim. Acta 2004, 68:1873-1881.
67. Krot A.N., MacPherson G.J., Ulyanov A.A., Pataev M.I. Fine-grained, spinel-rich inclusions from the reduced CV chondrites Efremovka and Leoville: I. Mineralogy, petrology, and bulk chemistry. Meteorit. Planet. Sci. 2004, 39:1517-1553.
68. Krot A.N., McKeegan K.D., Huss G.R., Liffman K., Sahijpal S., Hutcheon I.D., Srinivasan G., Bischoff A., Keil K. Aluminum-magnesium and oxygen isotope study of relict Ca-Al-rich inclusions in chondrules. Astrophys. J. 2006, 639:1227-1237.
69. Kurat G. Der kohlige Chondrit Lancé: Eine petrologische Analyse der komplexen Genese eines Chondriten. Tschermak's Mineralogische und Petrographische Mitteilungen 1975, 22:38-78.
70. Lee T., Russell W.A., Wasserburg G.J. Calcium isotopic anomalies and the lack of aluminum-26 in an unusual Allende inclusion. Astrophys. J. (Lett.) 1979, 228:L93-L98.
71. Libourel G., Krot A.N., Tissandier L. Role of gas-melt interaction during chondrule formation. Earth Planet. Sci. Lett. 2006, 251:232-240.
72. Lin Y., Kimura M. Ca-Al-rich inclusions from the Ningqiang meteorite: continuous assemblages of nebular condensates and genetic link to Type B inclusions. Geochim. Cosmochim. Acta 2003, 67:2251-2267.
73. Lin Y., Guan Y., Leshin L.A., Ouyang Z., Wang D. Short-lived chlorine-36 in a Ca- and Al-rich inclusion from the Ningqiang carbonaceous chondrite. Proc. Natil. Acad. Sci. 2005, 102:1306-1311.
74. Lodders K. Solar system abundances and condensation temperatures of the elements. Astrophys. J. 2003, 591:1220-1247.
75. MacPherson, G.J., 2003. Calcium-aluminum-rich inclusions in chondritic meteorites. In: Meteorites, Comets, and Planets, Treatise on Geochemistry, vol. 1. Elsevier-Pergamon, Oxford, pp. 201-246.
76. MacPherson G.J., Davis A.M. Refractory inclusions in the prototypical CM chondrite, Mighei. Geochim. Cosmochim. Acta 1994, 58:5599-5625.
77. MacPherson G.J., Huss G.R. Petrogenesis of Al-rich chondrules: evidence from bulk compositions and phase equilibria. Geochim. Cosmochim. Acta 2005, 69:3099-3127.
78. MacPherson G.J., Grossman L., Allen J.M., Beckett J.R. Origin of rims on coarse-grained inclusions in the Allende meteorite. Proc. Lunar Planet. Sci. 1981, 12:1079-1091. (abstract).
79. MacPherson G.J., Wark D.A., Armstrong J.T. Primitive materials surviving in chondrites: refractory inclusions. Meteorites and the Early Solar System 1988, 746-807. The University of Arizona Press, Tucson, Arizona. J.F. Kerridge, M.S. Matthews (Eds.).
80. MacPherson G.J., Davis A.M., Grossman J.N. Refractory inclusions in the unique chondrite ALH85085. Meteoritics 1989, 24:A297. (abstract).
81. Palme H., Fegley B. High-temperature condensation of iron-rich olivine in the solar nebula. Earth Planet. Sci. Lett. 1990, 101:180-195.
82. Petaev, M.I., Wood, J.A., 2005. Meteoritic constraints on temperature, pressure, cooling rates, chemical compositions, and modes of condensation in the solar nebula. In: Chondrites and the Protoplanetary Disc. Astronomical Soceity of the Pacific Conference Series 341, pp. 373-406.
83. Petaev M.I., Krot A.N., Wood J.A. Nebular condensation under incomplete equilibrium: implication for the fine-grained spinel-rich CAIs. Lunar Planet. Sci. 2005, 36. (abstract #1238).
84. Richter F.M., Davis A.M., Ebel D.S., Hashimoto A. Elemental and isotopic fractionation of Type B calcium-aluminum-rich inclusions: experiments, theoretical considerations, and constraints on their thermal evolution. Geochim. Cosmochim. Acta 2002, 66:521-540.
85. Richter F.M., Janney P.E., Mendybaev R.A., Davis A.M., Wadhwa M. Elemental and isotopic fractionation of Type B CAI-like liquids by evaporation. Geochim. Cosmochim. Acta 2007, 71:5544-5564.
86. Rout S.S., Bischoff A. Ca,Al-rich inclusions in Rumuruti (R) chondrites. Meteorit. Planet. Sci. 2008, 43:1439-1464.
87. Rout, S.S., Bischoff, A., Nagashima, K., Krot, A.N., Huss, G.R., Keil, K., 2009. Oxygen and magnesium isotope composition of calcium-aluminum-rich inclusions from Rumuruti (R) chondrites. Geochim. Cosmochim. Acta 73, 4264-4287.
88. Rubin A.E., Kallemeyn G.W. Carlisle Lakes and Allan Hills 85151: members of a new chondrite grouplet. Geochim. Cosmochim. Acta 1989, 53:3035-3044.
89. Rubin A.E., Kallemeyn G.W. Pecora Escarpment 91002: a member of the new Rumuruti (R) chondrite group. Meteoritics 1994, 29:255-264.
90. 26Al in the solar nebula and constraints for nebula time scales. Science 1996, 273:757-762.
91. Russell S.S., Huss G.R., Fahey A.J., Greenwood R.C., Hutchison R., Wasserburg G.J. An isotopic and petrologic study of calcium-aluminum-rich inclusions from CO3 meteorites. Geochim. Cosmochim. Acta 1998, 62:689-714.
92. 16O enrichments in aluminum-rich chondrules from ordinary chondrites. Earth Planet. Sci. Lett. 2000, 184:57-74.
93. Russell S.S., Zipfel J., Folco L., Jones R., Grady M.M., McCoy T., Grossman J.N. The Meteoritical Bulletin, No. 87. Meteorit. Planet. Sci. 2003, 38:A189-A248.
94. Russell S.S., Zolensky M., Righter K., Folco L., Jones R., Connolly H.C., Grady M.M., Grossman J.N. The Meteoritical Bulletin, No. 89. Meteorit. Planet. Sci. 2005, 40:A201-A263.
95. Schulze H., Bischoff A., Palme H., Spettel B., Dreibus G., Otto J. Mineralogy and chemistry of Rumuruti: the first meteorite fall of the new R chondrite group. Meteoritics 1994, 29:275-286.
96. Sheng, Y.J., 1992. Origin of plagioclase-olivine inclusions. Ph.D. Thesis. California Institute of Technology, Pasadena, CA.
97. Sheng Y.J., Hutcheon I.D., Wasserburg G.J. Origin of plagioclase-olivine inclusions in carbonaceous chondrites. Geochim. Cosmochim. Acta 1991, 55:581-599.
98. Simon S.B., Grossman L. A preferred method for the determination of bulk compositions of coarse-grained refractory inclusions and some implications of the results. Geochim. Cosmochim. Acta 2004, 68:4237-4248.
99. Simon S.B., Davis A.M., Grossman L., Zinner E.K. Origin of hibonite-pyroxene spherules found in carbonaceous chondrites. Meteorit. Planet. Sci. 1998, 33:411-424.
100. Srinivasan G., Huss G.R., Wasserburg G.J. A petrographic, chemical and isotopic study of calcium-aluminum-rich inclusions and aluminum-rich chondrules from the Axtell (CV3) chondrite. Meteorit. Planet. Sci. 2000, 35:1333-1354.
101. Stolper E. Crystallization sequence of Ca-Al-rich inclusions from Allende: an experimental study. Geochim. Cosmochim. Acta 1982, 46:2159-2180.
102. Tomeoka K., Nomura K., Takeda H. Na-bearing Ca-Al-rich inclusions in the Yamato-791717 CO carbonaceous chondrite. Meteoritics 1992, 27:136-143.
103. Tronche E.J., Hewins R.H., MacPherson G.J. Formation conditions of aluminum-rich chondrules. Geochim. Cosmochim. Acta 2007, 71:3361-3381.
104. 26Al and O isotopes in an Allende type B2 CAI: implication for multiple secondary alteration events in the early solar system. Meteorit. Planet. Sci. 2007, 42:1267-1279.
105. 26Mg-excess. Earth Planet. Sci. Lett. 2007, 254:115-126.
106. 2 rare earth element melt system. Geochim. Cosmochim. Acta 2001, 65:479-494.
107. Wark D.A. Birth of the presolar nebula: the sequence of condensation revealed in the Allende meteorite. Astrophys. Space Sci. 1979, 65:275-295.
108. Wark.D.A.. Alteration and metasomatism of Allende Ca-Al-rich materials. Lunar Planet. Sci. 1981, 12:1145-1147. (abstract).
109. Wark D.A. Plagioclase-rich inclusions in carbonaceous chondrite meteorites-liquid condensates?. Geochim. Cosmochim. Acta 1987, 51:221-242.
110. Wark D.A., Lovering J.F. Marker events in the early evolution of the solar system: evidence from rims on Ca-Al-rich inclusions in carbonaceous chondrites. Proc. Lunar Planet. Sci 1977, 8:95-112. (abstract).
111. Wark D.A., Lovering J.F. The nature and origin of type B1 and B2 Ca-Al-rich inclusions in the Allende meteorite. Geochim. Cosmochim. Acta 1982, 46:2581-2594.
112. 7) in chondrites. Geochim. Cosmochim. Acta 1994, 58:3855-3877.
113. Weber D., Schultz L., Weber H.W., Clayton R.N., Mayeda T.K., Bischoff A. Hammadah al Hamra 119 - a new, unbrecciated Saharan Rumuruti chondrite. Lunar Planet. Sci. 1997, 27:1511-1512. (abstract).
114. Weber H.W., Schultz L. Noble gases in Rumuruti-group chondrites. Meteoritics 1995, 30:596. (abstract).
115. 17O and evidence for nebular oxidation. Geochim. Cosmochim. Acta 1991, 55:2657-2669.
116. 2 liquids from cosmic gases. Geochim. Cosmochim. Acta 1995, 59:3413-3444.