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Mokoia meteorite, Taranaki Region, North Island, New Zealand

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Latitude & Longitude (WGS84): 39° 38' South , 174° 24' East
Latitude & Longitude (decimal): -39.63333,174.40000
Non-native locality type:Meteorite
Meteorite Class:CV3 chondrite meteorite
Meteoritical Society Class: CV3
Metbull:View entry in Meteoritical Bulletin Database
Köppen climate type:Cfb : Temperate oceanic climate


CV3-ox Carbonaceous Chondrite, S1
4.54 kg

On 26 November 1908 a moving cloud accompanied by detonations appeared over New Zealand’s North Island. Immediately afterwards several stones were seen to fall, but only 2 were recovered (each ~2.3 kg). Mokoia is one of the larger CV (Vigarano-like) carbonaceous chondrites. CV meteorites are distinguished by large chondrules, large refractory inclusions and abundant matrix as well as by their defining elemental abundance and oxygen isotope ratios. The refractory inclusions are believed to have been among the earliest solid objects created out of the ancient Solar Nebula. Mokoia belongs to the oxidized subgroup of the CV meteorites [the subgroup also includes Allende, Grosnaja, and Kaba]. While multiple discoveries triggered by Allende’s large mass (2 tons) tend to dominate expectations of CV chondrites, small differences between the various CV meteorites are zealously pursued. Current thinking is that the mineralogy of the oxidized CV meteorites were altered — with the aid of hydrous fluids!!? — from a preexistent mineralogical assembly resembling that of the more reduced mineralogies of the more ‘Vigarano-like’ subgroup. Mokoia’s minerals and other microscopic phases provide us with another opportunity to understand how ancient processes produced our present Solar System.


Mineral List


24 valid minerals.

Meteorite/Rock Types Recorded

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This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

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Mason, B. H. (1963). Carbonaceous Chondrites. Space Science Reviews 1, 621-646.
Ramdohr, P. (1973). The Opaque Minerals in Meteorites. Elsevier Publishing Company. Amsterdam, London, New York.
Hyman, M. & Rowe, M. W. (1982). Magnetite in Carbonaceous Chondrites (Abstract). Lunar and Planetary Science XIII, pp. 354-355. (March 1982)
Keller, L. P. & Thomas, K. L. (1991). Matrix Mineralogy of the Bali CV3 Carbonaceous Chondrite: Lunar and Planetary Science XII: 705-706. (March 1991)
Brearley, A. J. & Jones, R. H. (1998). Chondritic Meteorites. In: Planetary Materials (Papike, J. J., Editor): Chapter 3, 398 pages. Mineralogical Society of America: Washington, DC, USA. (1998)
Kimura, M. & Ikeda, Y. (1998). Hydrous and anhydrous alterations of chondrules in Kaba and Mokoia CV chondrites. Meteoritics & Planetary Science 33 (5): 955–1198. (Sept 1998).
Grady, M. M. (2000). Catalogue of Meteorites (5/e). Cambridge University Press: Cambridge, New York, Oakleigh, Madrid, Cape Town.
Jogo, K., Nagashima, K., Hutcheon, I. D. , Krot, A. N. & Nakamura, T. (2012) Heavily metamorphosed clasts from Mokoia and Yamato-86009: Meteoritics & Planetary Science 47 (12): 2251-2268. (Dec 2012)

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