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The Famenin fall and other ordinary chondrites intermediate between H and L groups
Pourkhorsandi, Hamed1,2; Gattacceca, Jerome1; Rochette, Pierre1; Smith, Thomas3; Bonal, Lydie4; D'Orazio, Massimo5; Devouard, Bertrand1; Sonzogni, Corinne1; Debaille, Vinciane2
2022-03-26
Source PublicationMETEORITICS & PLANETARY SCIENCE
ISSN1086-9379
Pages22
AbstractThe Famenin meteorite fell around 08:30 a.m. local time (GMT+4.5) on June 27, 2015 on the roof of a house in Famenin, a town in NW Iran. A single 640 g stone was recovered, shattered into several pieces upon impact. The shape of the impact hole and the relative position of the recovered meteorites indicate a N-NW fall direction. Famenin is an ordinary chondrite (OC) with well-preserved chondrules of various types, (Fe,Ni) metal, troilite, phosphate, and chromite. The organic matter systematics and the olivine and low-Ca compositional distributions (percent mean deviations 18% and 31%, respectively) indicate it is a type 3.4/3.8 chondrite. Considering the average chemical compositions of olivine (Fa(17.5 +/- 4.7)) and low-Ca pyroxene (Fs(16.8 +/- 7.5)), average Co content of the kamacite (5.6 mg g(-1)), and Cu/Ni and Ga/Ni ratios, Famenin should be classified as an H chondrite. However, saturation magnetization is 26.0 Am-2 kg(-1), indicating a bulk metal content similar to L chondrites. Similarly, the whole-rock Ni and Co contents (13073 and 540 mu g g(-1), respectively), and average chondrule diameter (550 mu m) are closer to typical values for L chondrites than H chondrites. The (Fe,Ni) metal modal abundance (5 vol%), magnetic susceptibility, and possibly whole-rock oxygen isotopic composition indicate intermediate properties between H and L chondrites. Noble gas composition and cosmic-ray exposure ages of Famenin and El Medano 195 (another intermediate OC) shows their gas-rich character and an older ejection age from their parent body than those for the majority of H and L chondrites. Famenin, together with similar intermediate OCs, increases the diversity of this meteorite clan and suggests the existence of a separate OC group with a composition broadly intermediate between H and L groups for which a different designation (HL) is proposed. OCs likely originate from more than three parent bodies (H, L, and LL) as traditionally proposed.
DOI10.1111/maps.13801
Funding OrganizationCultural Office of the French Embassy in Tehran ; Cultural Office of the French Embassy in Tehran ; European Union ; European Union ; Cultural Office of the French Embassy in Tehran ; Cultural Office of the French Embassy in Tehran ; European Union ; European Union ; Cultural Office of the French Embassy in Tehran ; Cultural Office of the French Embassy in Tehran ; European Union ; European Union ; Cultural Office of the French Embassy in Tehran ; Cultural Office of the French Embassy in Tehran ; European Union ; European Union
WOS KeywordLASER-EXTRACTION TECHNIQUE ; RAY EXPOSURE HISTORY ; OXYGEN-ISOTOPE ; CONDENSATION TEMPERATURES ; METEORITICAL BULLETIN ; TYPE-3 CHONDRITES ; METAL PHASES ; CLASSIFICATION ; METAMORPHISM ; MINERALOGY
Language英语
Funding ProjectCultural Office of the French Embassy in Tehran ; European Union[801505]
Funding OrganizationCultural Office of the French Embassy in Tehran ; Cultural Office of the French Embassy in Tehran ; European Union ; European Union ; Cultural Office of the French Embassy in Tehran ; Cultural Office of the French Embassy in Tehran ; European Union ; European Union ; Cultural Office of the French Embassy in Tehran ; Cultural Office of the French Embassy in Tehran ; European Union ; European Union ; Cultural Office of the French Embassy in Tehran ; Cultural Office of the French Embassy in Tehran ; European Union ; European Union
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000773226200001
PublisherWILEY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/105023
Collection岩石圈演化国家重点实验室
Corresponding AuthorPourkhorsandi, Hamed
Affiliation1.Aix Marseille Univ, CEREGE, INRAE, CNRS,IRD, Aix En Provence, France
2.Univ Libre Bruxelles, Lab G Time, CP 160-02,50 Av FD Roosevelt, B-1050 Brussels, Belgium
3.Chinese Acad Sci, Inst Geol & Geophys, 19 Beitucheng Western Rd,Box 9825, Beijing 100029, Peoples R China
4.Inst Planetol & Astrophys Grenoble, Grenoble, France
5.Univ Pisa, Dipartimento Sci Terra, Pisa, Italy
Recommended Citation
GB/T 7714
Pourkhorsandi, Hamed,Gattacceca, Jerome,Rochette, Pierre,et al. The Famenin fall and other ordinary chondrites intermediate between H and L groups[J]. METEORITICS & PLANETARY SCIENCE,2022:22.
APA Pourkhorsandi, Hamed.,Gattacceca, Jerome.,Rochette, Pierre.,Smith, Thomas.,Bonal, Lydie.,...&Debaille, Vinciane.(2022).The Famenin fall and other ordinary chondrites intermediate between H and L groups.METEORITICS & PLANETARY SCIENCE,22.
MLA Pourkhorsandi, Hamed,et al."The Famenin fall and other ordinary chondrites intermediate between H and L groups".METEORITICS & PLANETARY SCIENCE (2022):22.
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