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Nova 018
Basic information Name: Nova 018
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2014
Country: (unknown)
Mass:help 2.1 kg
Meteoritical Bulletin:  MB 106  (2018)  Ureilite
Recommended:  Ureilite    [explanation]

This is 1 of 617 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 4 Sep 2017
Writeup from MB 106:

Nova 018


Purchased: 2014

Classification: Ureilite

History: Purchased by D. DGregory at the Denver mineral show in September 2014.

Physical characteristics: (S.Korchinos, UTorG,ROM; V.Di Cecco, ROM) Total mass of pieces is 2.1 kg, with the largest piece having mass of 1.79 kg. Remainder of mass is divided among 12 smaller fragments. The sample is mostly covered by a dark, regmalypted fusion crust. Cracks and exposed surfaces are weathered and rusty. Specimen is very hard and difficult to cut with a diamond saw.

Petrography: (S. Korchinos, UTorG,ROM; V. Di Cecco, ROM) The thin section is composed mostly of coarse-grained olivine with medium-grained, mm to sub-mm pigeonite grains. The silicates exhibit clear reduction rims surrounding their cores. The interstitial matrix and veins are carbon-rich and composed mostly of graphite and numerous nano-diamonds, confirmed using Raman, EPMA and SEM imaging. The interstitial phases appear very dark to opaque when viewed under both plane-polarized and cross-polarized transmitted light.

Geochemistry: Mineral compositions and geochemistry: Oxygen isotopes: analyses of two subsamples were conducted at OkaU by R. Tanaka and E. Nakamura. The analyses gave δ17O = 4.224, 4.161; δ18O = 8.648, 8.512; and Δ17O = -0.331, -0.323 (all values in per mil). Bulk Composition: The olivine cores have Fa24.1±2.3 (N=43) and their bulk chemistry includes CaO = 0.35 ± 0.12 (N=43), Cr2O3 = 0.65 ± 0.23 (N=43), and MnO = 0.42 ± 0.03. The pyroxene cores have Fs20.6±1.0Wo10.2±0.2 (N=24) and their bulk chemistry includes CaO = 5.18 ± 0.09 (N=24), Cr2O3 = 1.24 ± 0.09 (N=24), MnO = 0.39 ± 0.02

Classification: Achondrite (ureilite). High shock, low weathering.

Specimens: One thin section and the smaller fragments are held at the ROM. The main mass is held by DGregory.

Data from:
  Table 0
  Line 0:
Place of purchase:Denver, Colorado
Date:P 2014
Mass (g):2101.38
Shock stage:high
Weathering grade:low
Fayalite (mol%):23.4±3.6 (N=53)
Ferrosilite (mol%):19.2±3.7 (N=34)
Wollastonite (mol%):10.2±2.1 (N=34)
Classifier:S. Korchinos, UTorG, ROM
Type spec mass (g):2101.38
Type spec location:ROM
Main mass:DGregory
Comments:Submitted by Stephen Korchinos & Veronica Di Cecco
Plots: O isotopes:  
   and collections
ROM: Royal Ontario Museum, 100 Queen's Park, Toronto, Ontario M5S 2C6, Canada (institutional address; updated 18 Oct 2011)
DGregory: David Gregory, 230 First Avenue, Suite 108, St. Thomas, Ontario N5R 4P5, Canada (private address)
OkaU: Institute for Study of the Earth's Interior, Okayama University, Misasa Tottori 682-0193, Japan (institutional address)
UTorG: University of Toronto, Dept. Geology, Earth Sciences Centre, 22 Russell Street Toronto, Ontario, M5S 3B1, Canada (institutional address; updated 31 Jan 2011)
References: Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
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     This is 1 of 34 approved meteorites from (unknown) (plus 15 unapproved names)

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