top of page

IIAB

page top
Agoudal

Name

*click on the Name for more information

Structure Class

Iron

Chemical Class

IIAB

Country

Year found

2000

Mass

100 kg

[Museum Collection]

(1) 32.11g   (2) 10.9g   (3) 9.8g

History: (H. Chennaoui Aoudjehane, M. Aboulahris, FSAC) Two small pieces of iron were collected in 2000 in the Agoudal area, High Atlas Mountains, Morocco, and sold to tourists. In September 2011, one piece was sold to a dealer in Errich, who recognized it as an iron meteorite. During the last months of 2012, systematic searching by meteorite hunters with metal detectors resulted in the discovery of a large number of meteorites, mostly small. Many pieces were collected on the surface or buried a few cm deep. The largest piece recovered was 60 kg, buried ~50 cm below the surface. On 9 February 2013, H. Chennaoui Aoudjehane, M. Aoudjehane and M. Aboulahris collected 200 g of specimens; the listed coordinates are those of the largest piece they recovered. The strewnfield is not yet clearly defined. Physical characteristics: Total mass is >100 kg. Hundreds of small pieces (1-100 g), many 100-1000 g, and a few pieces >1 kg, have been recovered. The majority of collected material occurs as 2-5 cm, irregularly shaped shrapnel pieces. Most pieces have a thin weathering rind. Some smaller bullet-shaped (~cm-sized) fragments are rounded, showing well-developed fusion crust. Petrography: (L. Garvie, ASU) Decimeter-sized pieces show a coarse pattern of irregular, interlocking kamacite grains; some grains with sub-boundaries. Widmanstätten pattern not evident in the small sections studied. Grain boundaries commonly curved. Etched pieces range from shiny with well-developed Neumann bands, to pieces with a matte appearance, typical of the hatched ε-structure. The shock-hatched regions show incipient recrystallization, with secondary growth of irregularly-shaped (to 1 mm) kamacite. No plessite observed. Schreibersite abundant occurring as cm-sized skeletal crystals at the centers of kamacite crystals, as rhabdites, and as a grain boundary precipitate. Rhabdites locally numerous as sharp, 10-25 μm faceted prisms. Scattered troilite nodules, to 1 cm. Troilite not surrounded by schreibersite, but instead large skeletal schreibersite is situated a few mm away. Heat-affected zone visible on some stones. Several of the smaller pieces, and especially the rounded bullet-shaped stones, have fusion crust and heated-affected zone of varying thickness; some completely recrystallized. Geochemistry: (C. Herd and G. Chen, UAb): ICP-MS data, Ni 5.5 wt%, Co 4.1 mg/g, Ga 58 μg/g, Ir

Qara

Name

*click on the Name for more information

Structure Class

Iron

Chemical Class

IIAB

Country

Year found

2020

Mass

19.95 kg

[Museum Collection]

(1) 971.2g

History: Single piece of iron was bought from Mr. Abdiqani Hussein, in Nairobi, Kenya in May 2020. Mr. Abdiqani Hussein stated that meteorite was found in the desert at coordinates: 2°04.031’N; 39°01.016’E Physical characteristics: The meteorite has cone-like shape (35 × 28 cm); a surface has some regmaglypts and is covered by a shell of iron oxides. Total weight is 19.95 kg. Petrography: (G. Skridlaite, Vilnius University), L. Siliauskas (Nature Research Centre, Vilnius). The meteorite comprises mostly low-Ni metal (kamacite) with minor taenite lamellas of ~5-20 µm in width. Widmanstätten structure is absent. Inclusions of troilite and graphite up to 5 cm in size are presented. Minor minerals are schreibersite which forms euhedral crystals, and olivine inclusions in graphite. Neumann lines were observed. The products of terrestrial weathering are Fe, Ni hydroxides. Geochemistry: Mineral composition and geochemistry: (B. Knašienė, E. Naujalis, Vilnius University), metal composition, all in ppm: Ni 62586; Co 4432; Cu 153; Zn 40.2; Ga 113; As 44.9; Ir 10.3; Pt 20; Au

Sikhote-Alin

Name

*click on the Name for more information

Structure Class

Iron

Chemical Class

IIAB

Country

Year found

1947

Mass

23 t

[Museum Collection]

(1)11.9kg   (2)11.23kg   (3)109.4g   (4)104.8g  (5)92.7g  (6)90.7g  (7)87.5g  (8)80.6g  (9)69.2g  (10)64.5g  (11)63.4g  (12)59.7g  (13)57.8g  (14)56.6g  (15)55.6g  (16)55.2g  (17)52.8g  (18)51.0g  (19)49.3g  (20)48.1g  (21)46.1g  (22)45.2g  (23)43.2g  (24)39.0g  (25)37.8g  (26)36.4g  (27)31.8g  (28)31.8g  (29)27.4g (30)26.5g  (31)13.6g  (32)12.3g  (33)12.1g

(34)11g  (35)9.7g  (36)342.9g  (37)146g  (38)884g(174pieces)  (39)118g(32pieces)

(40)28.6g  (41)11.9g 

This is 1 of 148 approved meteorites classified as Iron, IIAB. Search for specimens in the Smithsonian Institution collection (U.S.): Search for this meteorite in the Natural History Museum collection (U.K.): Search for this meteorite in the Museo Nazionale dell'Antartide database (Siena, Italy): Never published in the Meteoritical Bulletin

bottom of page