Search results for: allende meteorite | Collections Search Center, Smithsonian Institution

Brian Harold Mason Papers, 1953-2001

Creator:: Mason, Brian Harold 1917-

Subject:: Goldschmidt, V. M (Victor Moritz) 1888-1947; National Museum of Natural History (U.S.) Dept. of Mineral Sciences

Physical description:: 1 cu. ft. (1 record storage box)

Type:: Manuscripts; Collection descriptions; Color photographs; Black-and-white photographs

Place:: Antarctica

Date:: 1953; 1953-2001

Topic:: Allende meteorite; Meteorites; Mineralogy

Local number:: SIA Acc. 02-194

Summary:: These are the papers of Brian Harold Mason, Curator Emeritus, Meteorites Division, Department of Mineral Sciences, National Museum of Natural History. Mason curates and classifies the 700+ meteorites recovered each year from Antarctica under a joint Smithsonian-NASA-NSF program. His research focuses on the mineralogy and petrology of meteorites and cosmochemistry. Materials include correspondence, memoranda, and project files pertaining to the Allende Meteorite, Antarctic meteorites, and a biography of Victor Moritz Goldschmidt

Data Source:: Smithsonian Institution Archives

Record ID:: siris_arc_247063

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Brian Harold Mason Papers, 1920s-1992

Creator:: Mason, Brian Harold 1917-

Subject:: Mason, Brian Harold 1917-; Goldschmidt, V. M (Victor Moritz) 1888-1947; National Museum of Natural History (U.S.) Dept. of Mineral Sciences; National Museum of Natural History (U.S.) Division of Meteorites

Physical description:: 1.5 cu. ft. (1 record storage box) (1 document box)

Type:: Manuscripts; Collection descriptions; Field notes

Date:: 1920; 1920-1992; 1920s-1992

Topic:: Allende meteorite; Meteorites; Mineralogy

Local number:: SIA Acc. 10-167

Summary:: These are the papers of Brian Harold Mason (1917-2009), Curator, Meteorites Division, Department of Mineral Sciences, National Museum of Natural History. Mason's research focused on the mineralogy and petrology of meteorites and cosmochemistry. Materials include correspondence, autobiographical information, field notebooks, research files and materials related to this biographical research on Victor Moritz Goldschmidt

Data Source:: Smithsonian Institution Archives

Record ID:: siris_arc_293064

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Allende Meteorite Reference Sample

Author:: Jarosewich, Eugene; Clarke, Roy S., Jr.; Barrows, Julie N.

Object Type:: Smithsonian staff publication; Electronic document

Year:: 1987

Citation:: Smithsonian Contributions to the Earth Sciences, 27: 1-49.

Abstract:: A reference material for comparative analytical studies and standardization was prepared from fresh, clean specimen material from the Allende, Mexico, Type CV3 carbonaceous chondrite fall of 8 February 1969. Fragments weighing 4 kg were powdered, homogenized, and split into 1 g and 5 g subsamples. Analytical results for a total of 74 elements were provided by 24 analysts or groups of analysts. A variety of techniques were used, and many elements were determined by more than one technique. Reports from contributors of data outline their procedures and give their results in detail. Sample homogeneity has been evaluated in terms of this body of data, and " recommended values" are suggested for 43 elements.

Doi:: 10.5479/si.00810274.27.1

Data source:: Smithsonian Institution Libraries

Record ID:: SILSRO_113521

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Inclusions in the Allende Meteorite

Author:: Mason, Brian; Taylor, S. R.

Object Type:: Smithsonian staff publication; Electronic document

Year:: 1982

Citation:: Smithsonian Contributions to the Earth Sciences, 25: 1-30.

Abstract:: Six discrete groups of inclusions have been distinguished in the Allende meteorite. Groups I, V, and VI are mostly melilite-rich chondrules, although some have been extensively altered to fine-grained aggregates; Groups II and III are mostly fine-grained aggregates made up largely of spinel and fassaite; Group IV are olivine-rich aggregates and chondrules. Each group has a distinctive trace-element pattern, most clearly shown by the rare-earth (RE) distribution pattern. Group I has an unfractionated pattern (except for a small positive Eu anomaly) at about 10-15 times chondrites; Group II has a highly fractionated pattern with depletion of the heavier lanthanides (Gd-Er) and negative Eu and positive Tm and Yb anomalies; Group III has an unfractionated pattern at about 20 times chondrites, except for negative Eu and Yb anomalies; Group IV has a relatively unfractionated pattern at 2-4 times chondrites; Group V has an unfractionated pattern at 10-20 times chondrites; Group VI has an unfractionated pattern at 10-20 times chondrites, except for positive Eu and Yb anomalies (i.e., complementary to Group III). The complex patterns of trace element distribution in these Allende inclusions indicate a complex history of formation of this meteorite from the solar nebula.

Doi:: 10.5479/si.00810274.25.1

Data source:: Smithsonian Institution Libraries

Record ID:: SILSRO_113523

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Allende, Mexico, Meteorite Shower

Author:: Clarke, Roy S., Jr.; Jarosewich, Eugene; Mason, Brian; Nelen, Joseph; Gomez, Manuel; Hyde, Jack R.

Object Type:: Smithsonian staff publication; Electronic document

Year:: 1971

Citation:: Smithsonian Contributions to the Earth Sciences, 5: 1-53.

Abstract:: The Allende meteorite fell near Parral, Chihuahua, Mexico, between 0105 and 0110 Central Standard Time on Saturday, 8 February 1969. The fireball approached from the south-southwest (S37?W), and broke up in the atmosphere, producing thousands of fusion-crusted meteoritic stones. The smallest individuals were recovered 4 km east of Rancho Polanco (26?432 N, 105?282 W), and the largest near, Rancho El Cairo (27?062 N, 105?122 W), some 50 km to the north-northeast across the Parral-Jimin?z highway. Specimen size increases generally as one moves to the north-northeast within the field, and many large specimens (5-15 kg) were recovered in and around the area enclosed by Pueblito de Allende, San Juan, Rancho Blanco, and Santa Ana. At least two tons of meteoritic stones have been recovered, with crusted individuals ranging in weight from approximately 1 g to one individual of 110 kg. Specimen shapes are mainly fragmental, due to one major disruption of the parent body, followed by minor subsequent fragmentation. Individual stones have primary and secondary fusion crust, and some fresh fracture surfaces due to late-stage breaking. A small percentage of stones shows strong ablative shaping due to oriented flight. The elongate strewnfield possibly exceeds 300 km2 in area, making Allende the largest recorded stony meteorite fall both in its areal extent and in total weight of recovered meteorites. Allende fell near the sites of find of two major iron meteorites, Morito and Chupaderos.
Chemical and mineralogical compositions establish that Allende is a Type III carbonaceous chondrite. Three distinct components can be recognized: finegrained black matrix (<"60%), chondrules (<"30%), and irregular white aggregates (<"10%). The matrix consists almost entirely of iron-rich olivine (average 50% Fe2SiO4), with minor amounts of troilite, pentlandite, and taenite, rendered opaque by dispersed carbonaceous material. Most of the chondrules are magnesium-rich, and consist of olivine (average 9% Fe2SiO4) with minor amounts of clinoenstatite and some glass; a few chondrules are rich in calcium and aluminum, and are made up largely of anorthite, gehlenite, augite, and spinel. The irregular aggregates are also rich in calcium and aluminum, and contain anorthite, gehlenite, augite, spinel, nepheline, grossular, and sodalite (the last two minerals have not previously been recorded from meteorites). Complete chemical analyses have been made of the bulk meteorite, a dark inclusion, the matrix, a chondrule concentrate, two individual chondrules, and a single aggregate.

Doi:: 10.5479/si.00810274.5.1

Data source:: Smithsonian Institution Libraries

Record ID:: SILSRO_113528

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Inclusions in the Allende Meteorite / Brian Mason and S.R. Taylor

Author:: Mason, Brian Harold 1917-; Taylor, Stuart Ross 1925-; Smithsonian Institution

Physical description:: iii, 30 p. : ill. ; 26 cm

Type:: Books

Date:: 1982

Topic:: Allende meteorite

Call number:: QE1 .S66 no.25; QB756.A43 1982

Summary:: Six discrete groups of inclusions have been distinguished in the Allende meteorite. Groups I, V, and VI are mostly melilite-rich chondrules, although some have been extensively altered to fine-grained aggregates; Groups II and III are mostly fine-grained aggregates made up largely of spinel and fassaite; Group IV are olivine-rich aggregates and chondrules. Each group has a distinctive trace-element pattern, most clearly shown by the rare-earth (RE) distribution pattern. Group I has an unfractionated pattern (except for a small positive Eu anomaly) at about 10-15 times chondrites; Group II has a highly fractionated pattern with depletion of the heavier lanthanides (Gd-Er) and negative Eu and positive Tm and Yb anomalies; Group III has an unfractionated pattern at about 20 times chondrites, except for negative Eu and Yb anomalies; Group IV has a relatively unfractionated pattern at 2-4 times chondrites; Group V has an unfractionated pattern at 10-20 times chondrites; Group VI has an unfractionated pattern at 10-20 times chondrites, except for positive Eu and Yb anomalies (i.e., complementary to Group III). The complex patterns of trace element distribution in these Allende inclusions indicate a complex history of formation of this meteorite from the solar nebula

Data Source:: Smithsonian Institution Libraries

Record ID:: siris_sil_358006

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The Allende meteorite reference sample / Eugene Jarosewich, Roy S. Clarke, Jr. and Julie N. Barrows, editors

Author:: Jarosewich, Eugene; Clarke, Roy S; Barrows, Julie N; Smithsonian Institution Press

Physical description:: iv, 49 p. ; 28 cm

Type:: Books

Date:: 1987

Topic:: Allende meteorite; Chondrites (Meteorites)--Standards; Nuclear activation analysis

Call number:: QE1 .S66 no.27

Notes:: Shipping list no.: 87-637-P

Summary:: A reference material for comparative analytical studies and standardization was prepared from fresh, clean specimen material from the Allende, Mexico, Type CV3 carbonaceous chondrite fall of 8 February 1969. Fragments weighing 4 kg were powdered, homogenized, and split into 1 g and 5 g subsamples. Analytical results for a total of 74 elements were provided by 24 analysts or groups of analysts. A variety of techniques were used, and many elements were determined by more than one technique. Reports from contributors of data outline their procedures and give their results in detail. Sample homogeneity has been evaluated in terms of this body of data, and " recommended values" are suggested for 43 elements