NWA 15937 Carbonaceous CO3.05 Chondrite - G741-0009 - 3.57g - #2 Ever - 100 CLUB

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NWA 15937 Carbonaceous CO3.05 Chondrite - G741-0009 - 3.57g - #2 Ever - 100 CLUB:
$356.95

Hello and thank you for viewing my listing. Today you are purchasing one rare full slice specimen of NWA 15937 Carbonaceous Chondrite CO3.05 Meteorite from Northwest Africa.THIS IS ONLY THE 2nd CO3.05 EVER to be CLASSIFIED.Below is the data for my classification. Extremely rare classification and a great addition to your collection.
THE 100 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 100 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 100 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 009 OF 100, ETC. METEORITES ARE ALL ABOUT COLLECTIBILITY AND PROVENANCE AND I'M A RECORD KEEPING FOOL OF MY COLLECTION FOR 20+YEARS. I'VE CREATED A LIBRARY TO MY LEFT, LOL. CHEERS!
DATA: THERE HAVE ONLY BEEN 12 SPECIMENS SOLD TO DATE OF NWA 15937. I WILL RETIRE THIS NWA NUMBER ONCE IT HAS HIT NUMBER 100 IN THE BOOK. I STILL HAVE ALMOST ALL OF THE ORIGINAL COA'S AND I WILL STATE THE 100 SPECIMENS WAY OF DOING THINGS. THANK YOU. WAS THAT TOO MUCH TO DIGEST??? LOL.
My catalog number is G741-0009 and weighs in at 3.57 grams and comes with my card of authenticity for provenance. Remember, provenance is a must when collecting meteorites. I have designed a COA for NWA 15937, 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 $5.95 and .50 cents for each additional item, unless over 60 grams, then 1.00 per item. Cheers and thanks again for stopping by.
Northwest Africa 15937Basic informationName:Northwest Africa 15937
This is an OFFICIAL meteorite name.
Abbreviation:NWA 15937
Observed fall:No
Year found:2019
Country:(Northwest Africa)
Mass:389 Bulletin:MB is 1 of 9 approved meteorites classified as CO3.05. [show all]
Search for other:Carbonaceous chondrites,Carbonaceous chondrites (type 3),CM-CO clan chondrites, andCO chondrites
Comments:Approved 30 Jul 2023WriteupWriteup fromMB 112:

Northwest Africa 15937(NWA 15937)

(Northwest Africa)

Purchased: 2019

Classification: Carbonaceous chondrite (CO3.05)

History: Purchased by Sean Tutorow from a Western Sahara contact in 2019. Location and date of find, unknown.

Petrography: (C. Herd and D. Poon-Matsune,UAb) Optical and microprobe examination of a polished thin section shows numerous chondrules in the range up to ~500 µm, average ~200 μm, with CAIs/AOAs and isolated olivine and pyroxene grains observed throughout. Sulfides are present, but rare and mostly altered. FeNi metal is present mainly as <50 µm inclusions in Type I olivine. Matrix ~30% of mode (estimated).

Geochemistry: (C. Herd and A. Locock,UAb) Data obtained by EMP examination of carbon-coated thin section: All olivine Fa21±16(n=41); ferroan chondrule olivine Fa24.1±9.5, Cr2O3=0.23±0.11 (n=20); low-Ca pyroxene (mineral clasts and chondrules) Fs2±1Wo0.9±0.3(n=4).

Classification: Carbonaceous chondrite (CO3.05), type 3.05 based on the mean value and standard deviation of Cr2O3in ferroan olivine(Grossman and Brearley, 2005); these values are similar toColonyandYamato 81020.

Specimens: Type specimen of 36.1 g, including one thin section, is atUAb. Main mass with 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:
MB112
Table 0
Line 0:Place of purchase:Western SaharaDate:P 2019Mass (g):388.7Pieces:41Class:CO3.05Shock stage:lowWeathering grade:lowFayalite (mol%):21±16 (n=41)Ferrosilite (mol%):2.0±1.0 (n=4)Wollastonite (mol%):0.9±0.3 (n=4)Classifier:C. Herd, UAbType spec mass (g):36.1Type spec location:UAbMain mass:TutorowComments:Field number G741; submitted by C. Herd