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Calama 079
Basic information Name: Calama 079
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2017
Country: Chile
Mass:help 44.3 g
Classification
  history:
Recommended:  H4    [explanation]

This is 1 of 5954 approved meteorites (plus 2 unapproved names) classified as H4.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 23 Feb 2020
Writeuphelp
Writeup from MB 109:

Calama 079        22°24.362 S, 68°34.391 W

Antofagasta, Chile

Find: 2017 Oct 14

Classification: Ordinary chondrite (H4)

History: One fragment weighing 44.34 g was found 14 October 2017 by the UrFU meteorite expedition-2017 in Chile (Pastukhovich A.Yu., Larionov M.Yu., Kruglikov N.A., Kolunin R.N.) near Chiu-Chiu.

Physical characteristics: The meteorite has roughly rounded shape. Exterior of the stone is desert polished. The surface and interior of the meteorite is light to dark brown in color due to Fe-hydroxides. No fusion crust was observed.

Petrography: Classification (K. Dugushkina and S. Berzin, RAS-UB). The meteorite consists mainly of a fine-grained inequigranular recrystallized matrix; chondrules make up 25-30% of the volume. Predominantly porphyritic olivine (PO) and porphyritic olivine-pyroxene (POP) chondrules. Chondrules mostly have even boundaries. The meteorite consists mainly of olivine 55%, low-Ca pyroxene 20%, Ca pyroxene 10%, plagioclase 10%, troilite 2-3%, Fe-Ni-metal 2-3%. Also chondrite contains accessory apatite, chromite and ilmenite. Heavy oxidation of metal and troilite, 60-95% being replaced (W3). Shock stage is S3.

Geochemistry: EDX analyses by K. Dugushkina, RAS-UB. Olivine Fa20.3±0.6 (N=16), orthopyroxene Fs17.8±0.8Wo1.2±0.2 (N=14), clinopyroxene En43±1.5Fs20±2.8Wo46±0.5, plagioclase An37±0.14 (N=9), chromite, apatite, troilite and FeNi-metal.

Classification: H4, ordinary chondrite.

Specimens: 29.54 g sample and 14.8 g cut-off and thin section, UrFU

Data from:
  MB109
  Table 0
  Line 0:
State/Prov/County:Antofagasta
Origin or pseudonym:limestone deflation plain
Date:2017 Oct 14
Latitude:22°24.362 S
Longitude:68°34.391 W
Mass (g):44.34
Pieces:1
Class:H4
Shock stage:S3
Weathering grade:W3
Fayalite (mol%):20.3±0.6 (N=16)
Ferrosilite (mol%):17.8±0.8 (N=14)
Wollastonite (mol%):1.2±0.2 (N=14)
Classifier:K. Dugushkina, RAS-UB
Type spec mass (g):44.34
Type spec location:UrFU
Main mass:UrFU
Finder:UrFU meteorite expedition - Chile-2017
Comments:Field name Past-7; submitted by Kseniya Dugushkina (IGG UB RAS) dugushkina.kseniya@mail.ru
Institutions
   and collections
IGG: Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China (institutional address; updated 16 Oct 2011)
UrFU: Ural Federal University, 620002, 19 Mira street, Ekaterinburg, Russia (institutional address; updated 14 Jan 2015)
RAS-UB: Zavaritsky Institute of Geology and Geochemistry Russian Academy of Sciences, Ural Branch 15 Akademika Vonsovskogo str., Ekaterinburg, 620016, Russia (institutional address; updated 19 Apr 2018)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
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Geography:

Chile
Coordinates:
     Recommended::   (22° 24' 22"S, 68° 34' 23"W)

Statistics:
     This is 1 of 1705 approved meteorites from Antofagasta, Chile (plus 5 unapproved names) (plus 1 impact crater)
     This is 1 of 1733 approved meteorites from Chile (plus 11 unapproved names) (plus 1 impact crater)
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