Meteorite NWA 16451 CK4 Carbonaceous meteorite, 32.3 grams for Sale

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Meteorite NWA 16451 CK4 Carbonaceous meteorite, 32.3 grams For Sale

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Meteorite NWA 16451 CK4 Carbonaceous meteorite, 32.3 grams:
$495.00

NORTHWEST AFRICA 16451 NWA 16451CK4CARBONACEOUS METEORITEFOUND IN JULY 2023IN MALI 🇲🇱32.4 GRAMS END-CUTThis unique and rare meteoriteisofficially classified & approved as NWA 16451Classified and studied by world renowned and profoundly respected Dr Anthony J. Irving and team at University of Washington EXTREMELY RARE AND SCIENTIFICALLY VALUABLE METEORITE
GUARANTEED AUTHENTICITY
YOU ARE BUYING A 100% GUARANTEED AUTHENTIC METEORITECOMBINED WITH A SIGNED CERTIFICATE OF AUTHENTICITY

First class express delivery and provenance provided.

I SHIP WORLDWIDE WITH FEDEX, UPS OR SIMILAR EXPRESS SERVICE, TRACKED & TRACED

OFFICIAL CLASSIFICATION DATA SOURCE:
THE METEORITICAL SOCIETY
INTERNATIONAL SOCIETY FOR METEORITICS AND PLANETARY SCIENCE
LUNAR AND PLANETARY INSTITUTE
METEORITICAL BULLETIN DATABASE
Northwest Africa 16451Basic informationName:Northwest Africa 16451
This is an OFFICIAL meteorite name.
Abbreviation:NWA 16451
Observed fall:No
Year found:2023
Country:Mali
Mass:389 14 Feb 2024WriteupWriteup from MB 113:

Northwest Africa 16451(NWA 16451)

Mali

Purchased: 2023 Jul

Classification: Carbonaceous chondrite (CK4)

History: Purchased by Mbark Arjdal in July 2023 from a Malian dealer.

Petrography: (A. Irving,UWS, and P. Carpenter,WUSL) Well-defined, separated equilibrated chondrules containing Cr-magnetite are set in a fine-grained matrix containing Cr-magnetite (stained pale orange in thin section), intermediate plagioclase and rare pentlandite. Metal is absent.

Geochemistry: Olivine (Fa32.6±0.1, range Fa32.4-32.7.7, N = 7), low-Ca pyroxene (Fs26.9±0.2Wo1.6±1.0, range Fs26.8-27.1Wo0.7-2.9, N = 4), augite (Fs8.9±0.8Wo47.0±0.5, range Fs7.8-9.5Wo46.6-47.9, N = 4), plagioclase (An34.2Or3.7; An61.0Or1.5; N = 2), magnetite (Cr2O34.0-4.8 wt.%, N = 4).

Classification: Carbonaceous chondrite (CK4).

Specimens: 21.3 g including one polished thin section atUWB; remainder with Mr. M. Arjdal.

Data from:
MB113
Table 0
Line 0:Place of purchase:MaliDate:P 2023 JulMass (g):389Pieces:3Class:CK4Shock stage:S2Weathering grade:lowFayalite (mol%):32.6±0.1Ferrosilite (mol%):26.9±0.2Wollastonite (mol%):1.6±1.0Classifier:A. Irving, UWS, and P. Carpenter, WUSLType spec mass (g):21.3Type spec location:UWBMain mass:M. ArjdalComments:Work name Arj ZM 855; submitted by A. Irving

CK4means:

\"Acarbonaceous chondriteof theCK groupof petrologictype 4.\"

The highlighted words are defined as follows:

carbonaceous chondrite: A major class of chondrites that mostly have Mg/Si ratios near the solar value and oxygen isotope compositions that plot below the terrestrial fractionation line.

CK group: TheKaroonda (CK) chemical group of carbonaceous chondrites, distinguished by abundant fine-grained matrix (~75 vol%), mm-sized chondrules that lack igneous rims, relatively few refractory inclusions, and a high degree of oxidation; most CK chondrites have been metamorphosed to type 4 or higher.

type 4: Designates chondrites that are characterized by abundant chondrules, and have been metamorphosed under conditions sufficient to homogenize olivine compositions and recrystallize fine-grained matrix. Some of the low-Ca pyroxene grains may be monoclinic and exhibit polysynthetic twinning. Primary igneous chondrule glass is absent.