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Northwest Africa 10617
Basic information Name: Northwest Africa 10617
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10617
Observed fall: No
Year found: 2014
Country: (Northwest Africa)
Mass:help 294 g
Meteoritical Bulletin:  MB 105  (2016)  R3
Recommended:  R3    [explanation]

This is 1 of 63 approved meteorites classified as R3.   [show all]
Search for other: Rumuruti chondrites, Rumuruti chondrites (type 3)
Comments: Approved 24 Apr 2016
Writeup from MB 105:

Northwest Africa 10617 (NWA 10617)

(Northwest Africa)

Purchased: 2014

Classification: Rumuruti chondrite (R3)

History: Matthew Martin purchased a 294 g meteorite from a Moroccan dealer at the 2014 Tucson Gem and Mineral Show.

Physical characteristics: Exterior of the stone is shiny and wind polished. Sawn surfaces show a breccia of orange-tan clasts to 1 cm and rarer black clasts in an orange-tan matrix. Chondrules prominent to 2.5 mm, though majority <0.9 mm.

Petrography: A polished microprobe section chosen from the dominant orange-tan area. Abundant chondrules and fragments set in an orange-tan matrix. Chondrules to 1 mm. Dominant minerals are olivine, sub-calcic augite, and augite with minor low-Ca pyroxene, chromite, and FeNi-sulfide. One small (40 μm) Ni-rich Fe grain found. Sulfides heavily oxidized.

Geochemistry: (L. Garvie, ASU) Olivine, Fa36.6±10.5 (Fa16.9-59.9, n=15, Fe/Mn=94.8±22.9, NiO to 0.9 wt%, Cr2O3 to 0.4 wt%, and P2O5 to 0.5 wt%). High-Ca pyroxene, Fs11.5±2.8Wo42.1±5.4 (n=5). Low-Ca pyroxene, Fs8.4Wo0.5 (n=1).

Classification: Rumuruti chondrite (R3), weathering high.

Specimens: 24.5 g and one polished mount at ASU.

Data from:
  Table 0
  Line 0:
Place of purchase:Tucson
Date:P 2014
Mass (g):294
Weathering grade:high
Fayalite (mol%):36.6±10.5
Ferrosilite (mol%):11.5±2.8
Wollastonite (mol%):42.1±5.4
Classifier:L. Garvie, ASU
Type spec mass (g):24.5
Type spec location:ASU
Main mass:Matthew Martin
Comments:Submitted by L. Garvie
   and collections
ASU: Center for Meteorite Studies, Arizona State University, Tempe, Arizona 85287-1404, United States; Website (institutional address; updated 14 Jan 2012)
References: Published in Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
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     This is 1 of 8745 approved meteorites from (Northwest Africa) (plus 1880 unapproved names)

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