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Type 3 | H 3.10 Unequilibrated Stoney Meteorite | 4.2g Rare Chondrite | NWA 8061

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On Offer: 4.2 gram H3.10 Type 3 Meteorite Specimen of NWA 8061 | There have only been 3 meteorites of the type H3.10 ever discovered. A very rare and chondrule rich Type 3.
Name: NWA 8061
Type: H 3.10 (High Metal Type 3 Ordinary Chondrite)
Description: This Type 3 H chondrite is one of only three H 3.10 chondrites known to exist. This is a 4.2 gram Fragment of H3.10 NWA 8061 with some external patina and small 9mmx6mm window revealing very well defined chondrules. Only ~860 grams of this meteorite have been recovered. The low TKW and low occurrence of type 3 H chondrites put this meteorite high on the serious collector's and researcher's wish list. Limited availability, I am only selling two of my 3 specimens as I know I will never see this meteorite again if I do ;-) Good luck and I hope you enjoy this meteorite as much as I do!
I offer a 100% no questions asked 15 day return policy.  
ID - NWA806120170003
 
Northwest Africa 8061
Basic information Name: Northwest Africa 8061
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8061 
Observed fall: No
Year found: 2013
Country: Morocco 
Mass:help 876 g
Classification
  history:
Meteoritical Bulletin:   MB 102   (2014)   H3.10
Recommended:   H3.10    [explanation]

This is 1 of 3 approved meteorites classified as H3.10.   [show all]
Search for other: H chondrites (type 3)H chondritesOrdinary chondrites (type 3), and Ordinary chondrites
Comments: Approved 5 Dec 2013
Writeuphelp
Writeup from MB 102: 

Northwest Africa 8061 (NWA 8061)

Morocco

Purchased: 2013

Classification: Ordinary chondrite (H3.10)

History: Purchased by Brahim Tahiri from a Moroccan hunter and sent to his partner Sean Tutorow for classification, 2013.

Physical characteristics: 21 fragments that fit together to form 3 matching stones. Weathered exterior, saw cuts on all fragments reveal the same reddish brown interior, with small chondrules visible.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows many distinct, porphyritic chondrules, most with glass or mesostasis, also some irregular shaped or fragmental chondrules. Apparent mean chondrule size 286±225 μm, median 200 μm, n=70. Some of the abundant iron metal appears to be oxidized a seen in the widespread oxide veining. Opaque matrix throughout. Accessory melilite, fassaite, sulfide, chromite.

Geochemistry: (C. Agee and N. Muttik, UNM) EMPA. Chondrule ferroan olivine Fa14.9±6.2, Fe/Mn=46±24, Cr2O3=0.34±0.11 wt%, n=21; chondrule olivine range Fa0.3-26.8, n=33; low Ca-pyroxene Fs10.5±8.2Wo1.7±1.7, Fe/Mn=25±25, n=24. (Karen Ziegler, UNM) Oxygen isotope values of 4 acid-washed aliquots of bulk sample, 1.3, 1.4, 1.4, 1.7 g, gave δ17O = 3.676, 3.040, 3.434, 3.139, δ18O = 5.521, 5.632, 6.320, 5.652, Δ17O = 0.761, 0.066, 0.097, 0.155 (linearized, all permil).

Classification: Ordinary chondrite (H3.10). Type 3.10 is based on mean Cr2O3 content and sigma of ferroan olivine in porphyritic chondrules using the scheme of Grossman and Brearley (2005). The sigma of 0.11 is anomalously low compared to other 3.10 ordinary chondrites, and instead resembles the mean Cr2O3 and sigma of ColonyY-81020 (CO3.1), and Acfer 094 (C2-ung). Weathering W2.

Specimens: 25.1 g including a probe mount on deposit at UNM, Sean Tutorow holds the main mass.

Bibliography:
  • Grossman J.N. and Brearley A.J. (2005) The onset of metamorphism in ordinary and carbonaceous chondrites. Meteorit. Planet. Sci. 40, 87-122. (link)
Data from:
  MB102
  Table 0
  Line 0:
Place of purchase: Morocco
Date: P 2013
Mass (g): 876.22
Pieces: 21
Class: H3.10
Fayalite (mol%): 0.3-26.8
Ferrosilite (mol%): 10.5±8.2
Wollastonite (mol%): 1.7±1.7
Classifier: C. Agee, UNM
Type spec mass (g): 25.1
Type spec location: UNM
Main mass: Sean Tutorow
Comments: Submitted by C. Agee

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