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MacKay Glacier 14005
Basic information Name: MacKay Glacier 14005
     This is an OFFICIAL meteorite name.
Abbreviation: MCY 14005
Observed fall: No
Year found: 2015
Country: Antarctica [Collected by Programma Nazionale di Ricerche in Antartide (PNRA), Italy]
Mass:help 172.1 g
Classification
  history:
Recommended:  EL6    [explanation]

This is 1 of 116 approved meteorites classified as EL6.   [show all]
Search for other: EL chondrites, Enstatite chondrites, Enstatite chondrites (type 4-7), and Enstatite-rich meteorites
Comments: Approved 5 Jan 2018
Writeuphelp
Writeup from MB 106:

MacKay Glacier 14005 (MCY 14005)        77°13.981’S, 158°13.450’

Antarctica

Find: 2015 Jan 15

Classification: Enstatite chondrite (EL6)

History: A 6 × 5 × 5 cm stone was found during the XXX PNRA Italian expedition, 2014-2015

Physical characteristics: Rounded shape, 80% crusted stone with a broken tip (6 × 5 × 5 mm)

Petrography: (M.Salvini, M. Gemelli, T. Di Rocco, DST-PI) The meteorite consists largely of prismatic (mainly subhedral) or granular enstatite (grain size 0.2-0.4 mm) and Fe-Ni metal, with minor amount of sulfides and plagioclase and a silica phase. Only vague traces of chondritic structure are discernable in thin section: in fact, only two poorly-defined relict chondrules (diameter of 0.8 and 1.5 mm) are visible. The sulfide phases are troilite, alabandite, daubreelite and oldhamite. Schreibersite and osbornite (TiN) have also been identified. No olivine has been found. Plotting our average mineral compositions on the diagrams of Zhang et al. (1995), we conclude that the meteorite is an EL6 chondrite.

Geochemistry: (M.Salvini, M. Gemelli, T. Di Rocco EMP at IGG-CNR Padua) Enstatite (Fs 0.2-0.8En 98-98.3Wo 1.4-1.5), plagioclase (Ab80.5An15.0Or4.15), metal (Fe 93.5, Ni 6.6, Si 0.9). Magnetic susceptibility log χ (× 10-9 m3/kg) = 5.51.

Classification: Enstatite chondrite (EL6)

Specimens: Main mass (172.1g), type specimen and one thin section (MNA-SI).

Data from:
  MB106
  Table 0
  Line 0:
Date:2015 Jan 15
Latitude:77°13.981'S
Longitude:158°13.450'
Mass (g):172.1
Pieces:1
Class:EL6
Magnetic suscept.:5.51
Classifier:M.Salvini, M. Gemelli,T. Di Rocco, DST-PI
Type spec mass (g):54.8
Type spec location:MNA-SI
Main mass:MNA-SI
Finder:Jacopo Nava
Comments:Submitted by M.Salvini, M. Gemelli DST-PI
Institutions
   and collections
DST-PI: Dipartimento di Scienze della Terra, Università di Pisa, Via S. Maria 53, 56126 Pisa, Italy (institutional address; updated 17 Oct 2011)
MNA-SI: Museo Nazionale dell'Antartide, Università di Siena, Via Laterina 8, I-53100 Siena, Italy; Website (institutional address; updated 13 Dec 2011)
CNR: Instituto di Geoscienze e Georisorse, Consiglio Nazionale delle Richerche, Sez. Di Padova, Corso Garibaldi 37, 35100 Padova, Italy (institutional address)
IGG: Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China (institutional address; updated 16 Oct 2011)
Catalogs:
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.
Published in Meteoritical Bulletin, no. 107, in preparation (2018)
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Geography:

Antarctica
Coordinates:
     Recommended::   (77° 13' 59"S, 158° 13' 27"E)

Statistics:
     This is 1 of 39173 approved meteorites from Antarctica (plus 5051 unapproved names)
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