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Quebrada Chimborazo 001
Basic information Name: Quebrada Chimborazo 001
     This is an OFFICIAL meteorite name.
Abbreviation: QC 001
Observed fall: No
Year found: 2004
Country: Chile
Mass:help 598 g
Meteoritical Bulletin:  MB 104  (2015)  CBa
Recommended:  CBa    [explanation]

This is 1 of 9 approved meteorites classified as CBa.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CB chondrites, CH-CB family, and Metal-rich meteorites
Comments: Approved 10 Mar 2015
Writeup from MB 104:

Quebrada Chimborazo 001 (QC 001)        24°7’37.28"S, 69°15’48.51"W

Antofagasta, Chile

Find: 2004 May 8

Classification: Carbonaceous chondrite (CBa)

History: The meteorite was found near the Minera Escondida copper mine at the foot of Pasua hill in the canyon, Quebrada Chimborazo.

Physical characteristics: A single, complete, irregularly shaped stone.

Petrography: The meteorite consists of magnesian nonporphyritic cm-sized chondrules and their fragments, Fe,Ni-metal, sulfide nodules and their fragments, and impact melt material. The chondrules have skeletal olivine textures and consist of magnesian olivine laths; anorthitic mesostasis. The impact melt often shows flow texture and consists of Fe,Ni-metal and sulfides, and abundant ferroan silicate droplets.

Geochemistry: Magnesian olivine laths Fa2-5, n=5; low-Ca pyroxene Fs2-5Wo0.5-1, TiO2=0.1-0.2, Al2O3=0.6-1.1, Cr2O3=0.5-0.6 (all wt%), n=8; high-Ca pyroxene Fs2-4Wo40-50, TiO2=0.3-1.7, Al2O3=7.6-18.9, Cr2O3=0.3-2.0 (all wt%), n=5; ferroan silicate droplets: SiO2=42.5±1.0, TiO2=0.26±0.48, Al2O3=3.6±0.3, Cr2O3=0.90±0.15, FeO=17.1±3.3, MnO=0.09±0.03, MgO=33.1±3.6, CaO=2.8±0.59, Na2O=0.24±0.07 (all wt%), n=24.

Classification: The meteorite is mineralogically very similar to the subgroup A (CBa) Bencubbin-like carbonaceous chondrites Gujba, Bencubbin, Weatherford, MIL 05082 and MIL 07411.

Specimens: A 20.9 g type specimen and 1 polished thin section are on deposit at the NHMD; Labenne holds the main mass.

Data from:
  Table 0
  Line 0:
Date:2004 May 8
Mass (g):598
Fayalite (mol%):2-5
Ferrosilite (mol%):2-5, 2-4
Wollastonite (mol%):0.5-1, 40-50
Classifier:A. Krot, U. Hawaii
Type spec mass (g):20.9
Type spec location:NHMD
Main mass:Luc Labenne
Finder:Luc Labenne
Comments:Submitted by F. Brenker
   and collections
NHMD: Natural History Museum of Denmark, University of Copenhagen, Øster Voldgade 5-7, 1350 Copenhagen K, Denmark. , Denmark; Website (institutional address; updated 17 Aug 2012)
Labenne: 23, rue de Esperance, 75013 Paris, France; Website (private address; updated 29 Aug 2012)
References: Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
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     Recommended::   (24° 7' 37"S, 69° 15' 49"W)

     This is 1 of 2963 approved meteorites from Antofagasta, Chile (plus 10 unapproved names) (plus 1 impact crater)
     This is 1 of 2992 approved meteorites from Chile (plus 13 unapproved names) (plus 1 impact crater)
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