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Nova Olinda | |||||||||||||||||||||||||||||
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Basic information | Name: Nova Olinda This is an OFFICIAL meteorite name. Abbreviation: There is no official abbreviation for this meteorite. Observed fall: No Year found: 2014 Country: Brazil Mass: 26.93 kg | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 148 approved meteorites classified as Iron, IIAB. [show all] Search for other: IIAB irons, Iron meteorites, and Metal-rich meteorites | ||||||||||||||||||||||||||||
Comments: | Approved 19 Mar 2022 | ||||||||||||||||||||||||||||
Writeup |
Writeup from MB 111:
Nova Olinda 7°28’S, 38° 1’W Paraiba, Brazil Find: 2014 Nov Classification: Iron meteorite (IIAB) History: (Andre L. R. Moutinho) The meteorite was found by brothers Edsom Oliveira da Silva and João Jarba Oliveira da Silva in November 2014, while prospecting for gold with a metal detector in the dry lake region of a farm in the rural area of Nova Olinda, Paraíba. Mr Edsom sent samples to Andre L R Moutinho that confirmed the sample as a meteorite. Physical characteristics: Elongated shape, 26 kg, 29 × 15 × 1 7cm Petrography: (Andre L. R. Moutinho) The meteorite has suffered intense weathering and no fusion crust or layer 2 region were observed. Terrestrial corrosion products were found up to 1-3 cm deep into the meteorite. In some portions, weathering followed the cubic cleavage planes of the original kamacite lamella. Two polished etched slices measuring 50 × 37 and 37 × 28 mm were studied. The etched slices shows thick lamellae of kamacite typically found in coarsest octahedrites. The average kamacite bandwidth is 5.93±2.4 mm (n=5). Neumman bands are abundant and were observed in some kamacite lamellae. Sparse plessite fields develops as comb plessite sometimes associated with wedge-shaped black taenite fields. Schreibersite wide ribbons and in crystals are abundant. Geochemistry: ICP-MS data, using a sample of North Chile (Filomena) as standard (C. Herd and P. Hill, UAb); ICP-MS method: Cr = 1.29, Ir = 0.01, Ga = 42.8, Ge = 105, As = 12.6, Pt = 1.37, Cu = 94.2, W = 0.09, Pd = 1.41, Ag = 0.012, (all ug/g). (M. S. Navarro and J. Enzweller, DGRN/Unicamp) LA-ICP-MS data: Ni = 62.18, Co = 5.33 (both mg/g); Cr = 16.8, Ir = 0.02, Ga = 51.9, Ge = 95, As = 13.7, Pt = 1.02, Cu = 120, Au = 1.13, W = 0.47, Pd = 2.27, Ag = 0.22, (all ug/g). (R. Scholz and G. N. Queiroga, DEGEO/EM/UFOP, D. Atencio, IGc/USP). EPMA: kamacite: 0.55% Co. Schreibersite (Fe = 67.74±0.28 wt.%, Ni = 15.79±0.02 wt.%, P = 13.58±0.05 wt.%, n = 7). Classification: Iron, IIAB The meteorite plots in IIAB fields and differs in composition from all Brazilian Irons. Type is consistent with the analysed structure. Specimens: Main mass with finder, 49 g at Unicamp, 66 g at USP, 33.6g at UAb, 2 kg with Andre L R Moutinho, | ||||||||||||||||||||||||||||
Data from: MB111 Table 0 Line 0: |
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Institutions and collections |
UAb: 1-26 Earth Sciences Building, University of Alberta, Edmonton, AB, T6G 2E3, Canada, Canada; Website (institutional address; updated 17 Oct 2011) USP: Museu de Geociências - USP Rua do Lago, 562 CEP: 05508-080 Butantã - SP Brazil, Brazil; Website (institutional address; updated 16 Feb 2024) UNICAMP: Institute of Geosciences Minerals Collection Rua Carlos Gomes 250 Cidade Universitária Zeferino Vaz Campinas, SP 13083-855, Brazil; Website (institutional address; updated 17 Dec 2021) |
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Catalogs: |
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References: | Published in Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Chabot N. L., D’Orazio M., Goodrich C., Greshake A., Gross J., Joy K. H., Komatsu M. and Miao B. (2023) The Meteoritical Bulletin, No. 111. Meteoritics & Planetary Science 58, 901–904. ?
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Photos: |
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Geography: |
Statistics: This is the only approved meteorite from Paraiba, Brazil This is 1 of 87 approved meteorites from Brazil (plus 6 unapproved names) (plus 7 impact craters) | ||||||||||||||||||||||||||||
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Revision history: |
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