On Offer: 18.74g R4 chondrite meteorite slice - R4 breccia I Ouzina

Description: 18.74 gram R4 Chondrite slice of the R type chondrite Ouzina meteorite.

Official Name: Ouzina

Classification: Rumuruti Type (R) - R4 breccia

General Information: The R chondrite, as it is most commonly referred to, is one of the 5 known classes of chondritic meteorites: Ordinary, Carbonaceous, Enstatite (E), Rumuruti (R), and Kakangari (K). The R chondrite is the most oxidized of all the chondrites, and is the rarest of the chondrite classes with the exception for the K chondrite. This the R4 breccia displays three distinct lithologies: black, light grey, and brown. Depending on the specimen, it may have one, two or all three visible in a single stone.

What You Get: 18.74 gram R chondrite Ouzina specimen as shown, storage/display membrane box, signed certificate of authenticity.

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OuzinaBasic informationName: Ouzina
This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 1999
Country: Morocco
Mass: 642 g
Classification
history:NHM Catalogue: 5th Edition (2000) R4Meteoritical Bulletin: MB 84 (2000) R4MetBase: v. 7.1 (2006) R4Recommended: R4 [explanation]
This is 1 of 66 approved meteorites classified as R4. [show all]
Search for other: Rumuruti chondrites, Rumuruti chondrites (type 4-7)
Writeup

Writeup from MB 84:

Ouzina

Morocco , near Algerian border

Found 1999 April

Rumuruti-type chondrite (R4)

A 642 g stone was found by a Bedouin. Classification and mineralogy (M. Killgore, SWML; A. Rubin, UCLA): chondrules (0.4 to 1 mm) well-defined, but matrix and chondrule mesostasis recrystallized; barred olivine and porphyritic chondrules abundant; average olivine, Fa 40.1, with 0.18 wt% NiO; shock stage, S2; weathering grade, W4. Specimens: main mass, with a dealer who wishes to remain anonymous; Fectay; 120 g, SWML; type specimen, 27 g, FMNH.

Institutions
and collectionsFMNH: Department of Geology The Field Museum of Natural History 1400 South Lake Shore Drive Chicago, IL 60605-2496, USA, United States; Website (institutional address; updated 16 Nov 2011)
UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011)
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Product Attributes:

Weight (lbs.): 0.50 lb

Length (in.): 12

Width (in.): 10

Height (in.): 3