NWA 6697 Official Carbonaceous C2-ung - G090-0003 - 7.35g - 13th EVER

Description: Hello and thank you for viewing my listing. Today you are purchasing one individual specimen of NWA 6697 Carbonaceous C2-ungrouped Chondrite Meteorite from Mauritania. C2-ungrouped is one of the most rare of all meteorites EVER to be classified. There is a total of 27 official and of that 27, 8 are Antarctic, which means, unobtainable to the general public. Of the remaining 8, maybe 3 or 4 you might find available for sale. The TKW of NWA 6697 is very low also at 67.05 grams originally less my donation/type spec sample which was 16.9 grams. Yes, I was generous, lol. I have been repeatedly asked to list some of my super rare C2-ung and here you go. These specimens ALL had a small piece removed for testing at UCLA. All 9 specimens had a small amount taken off to double check them, that they paired, and were the same C2-ung. Oxygen isotope testing was done in Seoul-Nu, South Korea on the specimens. I plucked CAI material from the largest to have studied also by UCLA per request by Rubin. This is one of the most important classifications of my career and was THE first blow your mind classification I had ever made. Below is the data for my classification. Excellent rare addition to your collection. THE 300 CLUB IS A NEW CATEGORY I HAVE MADE. IT HAS COME TO MY ATTENTION LAST YEAR THAT A LOT OF MY CLASSIFICATIONS, ESPECIALLY THE OLDER ONES FROM 2006 AND ON, WON'T EVER HIT 300 IN SPECIMENS MADE AVAILABLE. I WILL BE STARTING AT MY FIRST CLASSIFICATIONS AND GOING THROUGH THEM ONE BY ONE THIS YEAR AND FIGURING OUT HOW MANY WILL MAKE IT TO THE 300 CLUB AND HOW MANY WILL KEEP GOING BEYOND THAT. A LOT OF THIS DEPENDS ON THE ORIGINAL WEIGHT CLASSIFIED IN THE BEGINNING, MAKING THEM MUCH MORE RARE AND VERY LOW NUMBERS. SOME SPECIMENS WILL BARELY MAKE IT TO THE 100 CLUB. I HAD NO IDEA YEARS AGO THAT I WOULD DO THE TUCSON AND DENVER SHOWS FOR 10 YEARS AND THEN BIG UNIVERISITIES WOULD GOBBLE UP LARGE SPECIMENS MAKING MY WEIGHTS GO DOWN VERY FAST WITH SOME OF THESE CLASSIFICATIONS. PLEASE PAY ATTENTION TO THIS SECTION, WHEN THEY ARE GONE, THEY ARE GONE. ALL SPECIMENS COA'S WILL BE MARKED 003 OF 300 ETC FROM HERE ON OUT ALSO. THE ORIGINAL CARDS WITHOUT THAT STATEMENT I WOULD ASSUME WILL BECOME MORE COLLECTIBLE. METEORITES ARE ALL ABOUT COLLECTIBILITY AND PROVENANCE AND I'M A RECORD KEEPING FOOL OF MY COLLECTION. I'VE CREATED A LIBRARY TO MY LEFT, LOL. CHEERS! DATA: THERE HAVE ONLY BEEN 164 SPECIMENS SOLD (136 of the 164 are micros which is why this NWA will hit 300 and not 100) TO DATE OF NWA 6697. I WILL RETIRE THIS NWA NUMBER ONCE IT HAS HIT THE 300 SPECIMEN MARK IN MY BOOK. I HAVE A FEW ORIGINAL COA CARDS LEFT AND ONCE THOSE ARE GONE I WILL REDESIGN A NEW CARD STATING THE 300 SPECIMENS WAY OF DOING THINGS. I WILL ALSO WRITE THIS ON THE EXISTING ORIGINAL COA'S ALSO. THANK YOU. WAS THAT TOO MUCH TO DIGEST??? LOL. My catalog number is G090-0003 and weighs in at 7.35 grams and comes with my card of authenticity for provenance. Remember, provenance is a must when collecting meteorites. This is by far the largest specimen ever offered. There are none larger except my main mass. I have designed a COA for NWA 6697, as I do with all of my classifications. The specimen you see pictured is the exact specimen you will receive. Each card comes with catalog number, weight and my signature of authenticity. Thanks again for viewing. Cheers! Thanks again for viewing and my shipping is like this, the first is usually only $4.79 and .50 cents for each additional item, unless over 60 grams, then 1.00 per item. Everyone is given the opportunity to shop for two full weeks without ever exceeding 10.00 shipping, no matter how many you win or buy over the two-week period, even earth stones! Cheers and thanks again for stopping by. Northwest Africa 6697Basic informationName: Northwest Africa 6697 This is an OFFICIAL meteorite name. Abbreviation: NWA 6697 Observed fall: No Year found: 2010 Country: Mauritania Mass: 67.1 g Classification history:Meteoritical Bulletin: MB 99 (2011) C2-ungRecommended: C2-ung [explanation] This is 1 of 28 approved meteorites classified as C2-ung. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), and Ungrouped chondrites Comments:Approved 10 May 2011WriteupWriteup from MB 99: Northwest Africa 6697 (NWA 6697)MauritaniaPurchased: 2010Classification: Carbonaceous chondrite (C2, ungrouped)Petrography: Aqueously altered, ~35 vol% phyllosilicate-rich matrix. Chondrules lack glassy mesostasis. Opaques in the matrix are mainly iron-sulfide and magnetite. Many chondrules are surrounded by ~50 μm phyllosilicate-rich rims. Sparse metallic Fe-Ni in chondrules; metal grains are small and surrounded by sulfide and/or magnetite. Lacks coarse metal grains in chondrules and matrix. Chondrules ~800 μm (compared to 270 µm for CM chondrites). Many chondrules have irregular convoluted boundaries and abundant chondrule fragments in the matrix. Most chondrules are type-I PO and POP and a few BO. AOIs range in size from ~500 to ~1500 μm; they constitute ~2 vol.% of the rock.Geochemistry: Oxygen isotopes (Byeon-Gak Choi, Seoul-NU): Replicate analyses of acid-washed whole rock samples by laser fluorination gave δ18O = 2.653, 2.475; δ17O = -2.525, -2.358; Δ17O = -3.923, -3.633 (all per mil).Classification: Carbonaceous chondrite, ungrouped, petrologic grade 2. The whole-rock O-isotopic composition is on the CCAM line, indicating that the rock is not closely related to CR chondrites.Data from: MB99 Table 0 Line 0:Place of purchase:Northwest AfricaDate:P 2010Mass (g):67.05Pieces:9Class:C2-ungShock stage:S2Weathering grade:W2Fayalite (mol%):10.9±13.3 (n=15)Ferrosilite (mol%):1.8±1.1 (n=10)Wollastonite (mol%):1.5±1.1 (n=10)Classifier:Alan RubinType spec mass (g):16.9 gType spec location:UCLAMain mass:Sean TutorowComments:Submitted by Alan RubinPlots:O isotopes:

Price: 2939.95 USD

Location: Hebron, North Dakota

End Time: 2025-01-07T16:57:58.000Z

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