Sample Petrographic Description
Sample Number | QUE 94366 |
Newsletter | 19,1 |
Location | Queen Alexandra Range |
Field Number | 10847 |
Dimensions (cm) | 1.0 x 0.5 x 0.8 |
Weight (g) | 0.80 |
Original Classification | CV3 Chondrite |
Updated Classification | CV 3.6 Chondrite Reduced |
Pairing | QUE 93429; QUE 93744; QUE 94366; QUE 94546; QUE 97186; |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 1-25;Ferrosilite (mol%): 1-8 | |
Weathering | |
A/B | |
Fracturing | |
A | |
Macroscopic Description - Roberta Score | |
This tiny carbonaceous chondrite is almost totally covered with dull, black fusion crust. There is not much interior material available but what is visible is light gray with troilite and small areas of crystalline material which will be impossible to separate. | |
Thin Section Description (,2) - Brian Mason | |
The section shows chondrules (up to 1.2 mm across) and irregular granular aggregates in a brown to black semi-translucent matrix. The chondrules and aggregates consist almost entirely of olivine; trace amounts of nickel-iron and troilite are present, mainly within the chondrules. Microprobe analyses show olivine and pyroxene of variable composition: olivine, Fa1-25, mean Fa6; pyroxene, Fs1-8. The matrix appears to consist largely of iron-rich serpentine or other phyllosilicates. The meteorite is tentatively classified as a C3 chondrite of the Vigarano subtype, although the phyllosilicate matrix suggests C2; in this respect it is similar to Bali (Geochim. Cosmochim. Acta, v. 58, p. 5589, 1994). | |
Reclassification Notes (AMN 46,1) | |
Reclassification and pairing based on Raman spectroscopy (petrologic type 3.6), and on Ni content of metal and sulfide and magnetic susceptibility (Reduced). Details are reported in Righter et al. (2022); doi: 10.1111/maps.13932. |
Antarctic Meteorite Images for Sample QUE 94366 | ||||
Thin Section Photo(s) : | ||||
References for Sample QUE94366 | |
Giri, C., Steele, A., Fries, M., 2021, Evidence for protosolar graphene in Allende and QUE 94366 CV3 meteorites. Planetary and Space Science, 203, 105267, https://doi.org/10.1016/j.pss.2021.105267. | |
Fries, M., Steele, A., 2008, Graphite whiskers in CV3 meteorites. Science, 320(5872), 91-93. | |
Weisberg, M. K., Prinz, M., 1998, Fayalitic olivine in CV3 chondrite matrix and dark inclusions: A nebular origin. Meteoritics & Planetary Science, 33, 1087-1099. |