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Northwest Africa 7110
Basic information Name: Northwest Africa 7110
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7110
Observed fall: No
Year found: 2011
Country: (Northwest Africa)
Mass:help 220 g
Classification
  history:
Meteoritical Bulletin:  MB 100  (2012)  CV3
Recommended:  CV3    [explanation]

This is 1 of 471 approved meteorites classified as CV3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites
Comments: Approved 31 May 2012
Writeuphelp
Writeup from MB 100:

Northwest Africa 7110 (NWA 7110)

(Northwest Africa)

Purchased: 2011

Classification: Carbonaceous chondrite (CV3)

History: Purchased by Giorgio Tomelleri at the Erfoud market in Morocco.

Physical characteristics: Five fragments weighing 220 g, without fusion crust.

Petrography: (V. Moggi Cecchi, G. Pratesi, S. Caporali, MSP) Section contains large (0.3 – 1.8 mm, mean 0.8 mm) type I chondrules of various types (granular, PO and POP), accounting for about 30% of the total, set in a fine-grained matrix. The section contains a 2 × 1 mm AOA and a large (3 mm) CAI. Opaque phases are rare (less than 1%) and mainly represented by framboidal magnetite blebs, sometimes intergrown with pentlandite. Minor oxidized pyrrhotite is also present.

Geochemistry: Olivine shows two compositional ranges: Fa0.4-2.7 in granular, PO, and POP (mean Fa1.2, n=21, with up to 0.5 wt% Cr2O3), and Fa50.4-51.2 (n=5) in isolated subhedral grains up to 120 μm in the matrix. Low-Ca pyroxene (Fs1.1En98.9Wo1.2). Augite (Fs0.8En85.3Wo13.9, with 2.3 wt. % Al2O3). Oxygen isotopes: (I. Franchi, R.Greenwood, OU) δ17O = -1.01, δ18O = 3.94, Δ17O = -3.06 per mil.

Classification: Carbonaceous chondrite, CV3; the abundance of magnetite, the presence of Ni-rich Fe sulfides and rarity of Fe,Ni alloys suggest oxidized subgroup.

Specimens: 20.61 g, one polished thin section and a block are on deposit at MSP (MSP 5185). Main mass, anonymous.

Data from:
  MB100
  Table 1
  Line 1638:
Place of purchase:Erfoud
Date:P 2011
Mass (g):220
Pieces:5
Class:CV3
Shock stage:S1
Weathering grade:W2
Fayalite (mol%):0.4-2.7 (mean 1.2)
Ferrosilite (mol%):1.1
Wollastonite (mol%):1.2
Classifier:V. Moggi Cecchi, G. Pratesi, S. Caporali, MSP
Type spec mass (g):20.61
Type spec location:MSP
Main mass:Unknown
Comments:Inv.# MSP5185; submitted by Vanni Moggi Cecchi
Plots: O isotopes:  
Institutions
   and collections
MSP: Museo di Scienze Planetarie, Via Galcianese 20/H, 59100 Prato, Italy, Italy; Website (institutional address; updated 5 Mar 2014)
OU: Planetary and Space Sciences Department of Physical Sciences The Open University Walton Hall Milton Keynes MK7 6AA United Kingdom, United Kingdom (institutional address; updated 8 Dec 2011)
Catalogs:
References: Published in Meteoritical Bulletin, no. 100, MAPS 49, E1-E101 (2014)
Find references in NASA ADS:
Find references in Google Scholar:
Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Michael S. Scherman      
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6592 approved meteorites from (Northwest Africa) (plus 2020 unapproved names)

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