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Abbott

Name

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Structure Class

Ordinary chondrites

Chemical Class

H3-6

Country

Year found

1951

Mass

21.1 kg

[Museum Collection]

(1) 48.614g

This is 1 of 77 approved meteorites classified as H3-6. Search for specimens in the Smithsonian Institution collection (U.S.): Published in Meteoritical Bulletin, no. 37, Moscow (1966)

Abu Moharek

Name

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Structure Class

Ordinary chondrites

Chemical Class

H4

Country

Year found

1997

Mass

4.5 kg

[Museum Collection]

(1) 37.01g

This is 1 of 6424 approved meteorites (plus 2 unapproved names) classified as H4. Published in Meteoritical Bulletin, no. 82, MAPS 33, A221-A240 (1998)

Acfer 089

Name

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Structure Class

Ordinary chondrites

Chemical Class

H5

Country

Year found

1990

Mass

682 g

[Museum Collection]

(1) 30.0g

This is 1 of 11426 approved meteorites (plus 22 unapproved names) classified as H5. Search for specimens in the Smithsonian Institution collection (U.S.): Published in Meteoritical Bulletin, no. 71, Meteoritics 26, 255-262 (1991)

Aiquile

Name

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Structure Class

Ordinary chondrites

Chemical Class

H5

Country

Year found

2016

Mass

50 kg

[Museum Collection]

 (1) 12.9g   (2) 8.8g

History: A bright fireball appeared over Aiquile, Cochabamba district of Bolivia, on 20 November 2016, 17:57 local time (UTC-4). Stones fell in a strewn field of at least 12 × 2 km (northeasterly direction) in the following Aiquile communities: Tablamayu, Panamá, Chawar Mayu, Chaqo K’asa, Barbechos and Cruz Loma. The main bolide fragmentation occurred over the Tablamayu community, 12 km north of Aiquile. In the Cruz Loma community, C. Veizaga witnessed the fall of the largest stone (36.3 kg) about 500 m from him. He recovered the stone and in the following day the local Aiquile government (Luiz L. Arnez, Marco Cardona, Franz Navia, William Rodriguez, Jesus Yave) took the stone to the city museum. In the Panamá community, Roberto Soto witnessed the fall and recovered two other fragments (565 g, 2.2 kg). SERGEOMIN (Miguel A. Muriel, G. Villca, A. Perez), UMSA (Gonzalo Pereira), Brazil NM collaborators (Andre R. Moutinho, José M. Monzon) and S. Medina found additional fragments in the Panamá community. A. Moutinho found a 98 g fragment which was used for classification. Physical characteristics: The 36.3 kg stone was almost fully covered with fusion crust and remaglypts, with only small pitted corners (47 × 17 × 26 cm); the 2.26 kg stone is semi-prismatic and almost fully covered with fusion crust; the 565 g piece is a fragment mostly without fusion crust. Petrography: Medium shock stage (S3), chondritic texture and mineralogy and mineral compositions of an equilibrated ordinary chondrite. Porphyritic olivine and radial pyroxene chondrules dominate. Geochemistry: Microprobe analyses show an equilibrated olivine and pyroxene composition of Olivine (Fa18.3±0.5; n=53), low-Ca pyroxene (Fs 15.7±0.7; n=37). Mean Cr2O3 of olivine is 0.048 wt.% for both matrix and clasts areas. Classification: H group classification based on: chondrule mean apparent diameter (~0.3 mm), content of metallic Fe,Ni + FeS (9.9 vol%), Co content of kamacite (0 - 0.3 wt%). Petrologic type 5 classification based on chondritic texture, and plagioclase

Aksai Chin

Name

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Structure Class

Ordinary chondrites

Chemical Class

H5

Country

Year found

2012

Mass

2.4 kg

[Museum Collection]

 (1) 8.0g

This is 1 of 11426 approved meteorites (plus 22 unapproved names) classified as H5. Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015

Aridal 012

Name

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Structure Class

Ordinary chondrites

Chemical Class

H4

Country

Year found

2012

Mass

1953 g

[Museum Collection]

 (1) 11.5g

History: Discovered by T. Füllengraben and R. Bartoschewitz during natural history expedition close to the astronomical point of Ammat el Quebch in the Boujdour area on 2012 Feb 16. Physical characteristics: One brown stone and many small fragments totaling 1953 g; saw-cut shows chondrules set in fine-grained brown groundmass. Magnetic susceptibility log χ (× 10-9 m3/kg) = 4.89. Petrography: Microprobe examination of a polished thin section shows well developed chondrules (porphyritic, radial) up to 1.2 mm (av. 0.7 mm), chondrule and mineral fragments in recrystallized, brecciated groundmass with highly oxidized metal. Geochemistry: (R. Bartoschewitz, P. Appel and B. Mader, Kiel) Olivine: Fa18.8-20.1; av. Fa19.3±0.31 (n=21); pyroxene Fs16.5-17.2Wo1.2-1.5; av. Fs16.8±0.28Wo1.4±0.11 (n=7); kamacite Ni = 6.8-7.0, Co = 0.6 wt.%. Classification: Ordinary Chondrite (H4) of shock stage S3 and weathering grade W3. Specimens: 26.9 g on deposit at FSAC

Aridal 013

Name

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Structure Class

Ordinary chondrites

Chemical Class

H5

Country

Year found

2012

Mass

1029 g

[Museum Collection]

 (1) 7.1g

History: Discovered by R. Bartoschewitz and T. Füllengraben during a natural history expedition close to the astronomical point of Ammat el Quebch in the Boujdour area on 2012 Feb 16. Physical characteristics: One brown stone and seven smaller fragments totaling 1029 g; saw-cut shows chondrules set in fine-grained brown groundmass. Magnetic susceptibility log χ (× 10-9 m3/kg) = 4.92. Petrography: Microprobe examination of a polished thin section shows qwll-defined chondrules (porphyritic, barred, radial, granular) up to 1.5 mm (av. 0.5 mm), chondrule and mineral fragments in recrystallized, brecciated groundmass with highly oxidized metal. Geochemistry: (R. Bartoschewitz, P. Appel and B. Mader, Kiel) Olivine: Fa 18.8-19.5; av. Fa19.0±0.18 (n=17); pyroxene Fs16.9-17.4Wo1.3-1.5; av. Fs16.8±0.22Wo1.4±0.07 (n=6); kamacite Ni = 6.9-7.0, Co = 0.6 wt.%. Classification: Ordinary Chondrite (H5) of shock stage S3 and weathering grade W3. Specimens: 22.9 g on deposit at FSAC

Aridal 014

Name

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Structure Class

Ordinary chondrites

Chemical Class

H4

Country

Year found

2012

Mass

2.94 kg

[Museum Collection]

 (1) 145.3g

History: Discovered by S. Vassiliev and M. Jost, T. Füllengraben and R. Bartoschewitz during a natural history expedition close to the astronomical point of Ammat el Quebch in the Boujdour area on 2012 Feb 16 and 21. Physical characteristics: 38 brown stones totaling 2939.7 g; saw-cut shows chondrules set in fine-grained brown groundmass. Magnetic susceptibility log χ (× 10-9 m3/kg) = 4.72. Petrography: Recrystalized matrix with various types of chondrules up to 1.5 mm (average ~0,5 mm). Geochemistry: (R. Bartoschewitz, Bart, P. Appel and B. Mader, Kiel) Olivine: Fa18.7-19.4; av. Fa19.0±1.28 (n=14); pyroxene Fs16.2-17.5Wo1.2-1.5; av. Fs16.7±0.38Wo1.4±0.07 (n=10); kamacite Ni=7.0, Co=0.6 (all in wt.%). Classification: Ordinary Chondrite (H4) of shock stage S3 and weathering grade W4. Specimens: 45.7 g on deposit at FSAC

Aridal 015

Name

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Structure Class

Ordinary chondrites

Chemical Class

H4

Country

Year found

2012

Mass

1025 g

[Museum Collection]

 (1) 17.4g

History: Discovered by A. Koppelt, R. Bartoschewitz, T. Füllengraben and S. Buhl during a natural history expedition close to the astronomical point of Ammat el Quebch in the Boujdour area on 2012 Feb 21. Physical characteristics: 12 brown stones totaling 1025 g; saw-cut shows chondrules set in fine-grained brown groundmass. Magnetic susceptibility log χ (× 10-9 m3/kg) = 4.60. Petrography: Microprobe examination of a polished thin section shows well-developed chondrules (porphyritic, barred, radial, granular) up to 1.0 mm (av. 0.5 mm), chondrule and mineral fragments in recrystallized, brecciated groundmass with highly oxidized metal. Geochemistry: (R. Bartoschewitz, Bart, P. Appel and B. Mader, Kiel) Olivine: Fa18.9-22.2; av. Fa19.4±0.80 (n=16); pyroxene Fs16.4-17.5Wo1.3-1.5; av. Fs16.9±0.37Wo1.5±0.08 (n=6); kamacite Ni=6.9-7.0, Co=0.6 (all in wt.%). Classification: Ordinary Chondrite (H4) of shock stage S3 and weathering grade W4. Specimens: 36.8 g on deposit at FSAC

Aridal 016

Name

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Structure Class

Ordinary chondrites

Chemical Class

H4

Country

Year found

2012

Mass

2.21 kg

[Museum Collection]

 (1) 170.6g

History: Discovered by R. Bartoschewitz, T. Füllengraben, S. Vassiliev and M. Jost during a natural history expedition close to the astronomical point of Ammat el Quebch in the Boujdour area on 2012 Feb 21. Physical characteristics: 28 brown stones totaling about 2.21 kg. Some stones show brown fusion crust. Saw-cut shows chondrules set in fine-grained brown groundmass. Magnetic susceptibility log χ (× 10-9 m3/kg) = 4.35-4.63. Petrography: Microprobe examination of a polished thin section shows well-developed chondrules (porphyritic, radial, barred) up to 1 mm (av. 0.5 mm), chondrule and mineral fragments in recrystallized, brecciated groundmass with highly oxidized metal. Geochemistry: (R. Bartoschewitz, P. Appel and B. Mader, Kiel) Olivine: Fa18.4-19.4; av. Fa19.0±0.24 (n=17); pyroxene Fs16.2-17.0Wo1.2-1.5; av. Fs16.7±0.27Wo1.3±0.12 (n=6); chromite: CRAL=84.2, FFM=85.8. Classification: Ordinary Chondrite (H4) of shock stage S3 and weathering grade W3. Specimens: 26.5 g on deposit at FSAC

Balcarce

Name

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Structure Class

Ordinary chondrites

Chemical Class

H4

Country

Year found

2000

Mass

2.28 kg

[Museum Collection]

 (1) 2.0g

History: As indicated in Turone (2001), several pieces, including the main mass of 1780 g, were found at the base of Cerro Amarante in June 2000. The total mass was 2280 g. Presently the main mass of 1366 g is in a private collection. Petrography: M.E. Varela and M. Saavedra (ICATE). Different types of chondrules are visible: BO, RP and POP with apparent diameter up to 1.2 mm. Chondrule fragments and isolated euhedral crystals of olivine and pyroxene up to 600 µm are common. Most chondrules have well defined edges. When present, chondrule mesostasis is recrystallized. Both the metal and the sulfides have irregular shapes with sizes ranging from 20 µm to 1.2 mm. Polycrystalline troilite grains are scarce. Shock features include olivine undulatory extinction, planar fractures and the presence of polycrystalline troilite. Weathering is moderate. Geochemistry: Mineral composition: A total of 80 analyses covered 10 areas in the two thin section studied. Olivine, Fa18.3; Pyroxene, Fs16.6Wo0.5. Minor phases: high-Ca pyroxene Fs7.8Wo38.4. Classification: Ordinary chondrite (H4) Specimens: Type specimen of 33.12 g is on deposit in the MLP. 54.8 g and four thin section are on deposit at ICATE. The main mass, 1366 g, is in the Eduardo Jawerbaum collection.

Name