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Northwest Africa 6145
Basic information Name: Northwest Africa 6145
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 6145
Observed fall: No
Year found: 2009
Country: (Northwest Africa)
Mass:help 310 g
Meteoritical Bulletin:  MB 108  (2020)  R5
Recommended:  R5    [explanation]

This is 1 of 37 approved meteorites classified as R5.   [show all]
Search for other: Rumuruti chondrites, Rumuruti chondrites (type 4-7)
Comments: Approved 27 Jul 2019
Writeup from MB 108:

Northwest Africa 6145 (NWA 6145)

(Northwest Africa)

Purchased: 2009 Nov

Classification: Rumuruti chondrite (R5)

History: Purchased from a Moroccan mineral dealer at the mineral show in Munich, Germany

Petrography: (K. Metzler, IfP) Equilibrated chondrite, consisting of chondrules and chondrule fragments set in a recrystallized matrix. Some shock veins are present. Chondrule sizes mostly between 300 and 500 µm, up to 1.5 mm.

Geochemistry: Mineral compositions and geochemistry: Mean olivine composition Fa39.0±0.3 (38.4-39.4); n=20. Mean low-Ca pyroxene composition Fs30.5±0.3 Wo1.2±0.1 (Fs30.1-30.9 Wo1.0-1.4); n=5. Mean Ca-pyroxene composition Fs11.6±0.3 Wo44.6±0.2 (Fs11.2-12.1 Wo44.2-44.9); n=10. Accessories are chromite, troilite and pentlandite; no metal was found.

Classification: R chondrite based on mineral chemistry. Petrologic type 5, based on equilibrated olivine and pyroxene and well-preserved chondrules.

Data from:
  Table 0
  Line 0:
Place of purchase:Munich
Date:P 2009 Nov
Mass (g):310
Shock stage:S4
Weathering grade:W0
Classifier:K. Metzler, IfP
Type spec mass (g):20
Type spec location:IfP
Main mass:Mirko Graul, Bernau, Germany
Comments:Submitted by K. Metzler, IfP
   and collections
IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012)
References: Published in Meteoritical Bulletin, no. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150
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Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
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     This is 1 of 8495 approved meteorites from (Northwest Africa) (plus 1899 unapproved names)

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