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NWA 6077
UNGROUPED ACHONDRITEMETEORITE3.6 GRAM PART SLICEPOLISHED ON BOTH SIDES
POSSIBLY ONE OF THE MOST SIGNIFICANT METEORITE DISCOVERIES. THIS METEORITE COMES FROM A TIME WHEN EARTH WAS A PRIMORDIAL BALL OF MOLTEN ROCK.OXYGEN ISOTOPES SUGGEST THIS ROCK WAS JETTISONED FROM THE SURFACE, MOST LIKELY FROM A IMPACT EVENT,DURING THE EARLY EVOLUTIONARY STAGES OF OUR PLANET. BILLIONS OF YEARS LATER FALLING BACK DOWN, INTO OUR ATMOSPHERE, THISMETEORITE MAY BE THE ONLY SURVIVING ANCESTOR OF EARTH.
OFFICIAL CLASSIFICATION DATA SOURCE:
The Meteoritical SocietyInternational Society for Meteoritics and Planetary ScienceLunar and Planetary InstituteMeteoritical Bulletin Database
Northwest Africa 6077Basic informationName:Northwest Africa 6077 This is an OFFICIAL meteorite name.Abbreviation:NWA 6077Observed fall:NoYear found:2008Country:(Northwest Africa)Mass:1010 gClassification history:Meteoritical Bulletin:MB is 1 of 60 approved meteorites classified as Achondrite-ung.[show all]Search for other:Achondrites,Ungrouped achondritesComments:Approved 26 May 2011WriteupWriteup fromMB 99:
Northwest Africa 6077(NWA 6077)
(Northwest Africa)
Purchased: Sept 2008
Classification: Ungrouped achondrite
History: Purchased September 2008 by John Higgins from a Moroccan dealer in Agadir.
Physical characteristics: A single brownish 1010 g stone.
Petrography: (A. Irving and S. Kuehner,UWS) An olivine-rich assemblage with protogranular (possibly cumulate) texture exhibiting triple-junction grain boundaries. Additional minerals include orthopyroxene, clinopyroxene, altered kamacite, chromite, chlorapatite, Ni-bearing troilite and/or pyrrhotite. No plagioclase was found.
Geochemistry: Olivine (Fa30.2-30.7), orthopyroxene (Fs24.1-24.5Wo2.1-2.0), clinopyroxene (Fs9.4-10.0Wo44.0-43.5). Oxygen isotopes (D. Rumble,CIW): ?17O 2.667, 2.932; ?18O 5.180, 5.536; ?17O -0.057, +0.020 per mil
Classification: Achondrite (ungrouped, brachinite-like). Specimen exhibits similar mineralogy and oxygen isotopic composition toNWA 5400, and is likely paired with it.
Specimens: A total of 26.8 g and one polished thin section are on deposit atUWS. The main mass is held by Mr. John Higgins.
Data from:MB99 Table 0 Line 0:Place of purchase:AgadirDate:P Sept 2008Mass stage:lowWeathering grade:moderateFayalite (mol%):30.2-30.7Ferrosilite (mol%):24.1-24.5; 9.4-10.0Wollastonite (mol%):2.1-2.0; 44.0-43.5Classifier:A. Irving and S. Kuehner, UWSType spec mass (g):26.8Type spec location:UWSMain mass:J. HigginsComments:Submitted by A. IrvingPlots:O isotopes:Institutions and collectionsUWS: University of Washington,CIW: Carnegie Insitution Washington, United StatesIMCA ( INTERNATIONAL METEORITE COLLECTORS ASSOCIATION )I AM MEMBER # 9822 JOHN HIGGINS. THIS METEORITE IS FROM MY PERSONAL COLLECTION. I AM THE MAIN MASS HOLDER WITH NO BREAKS IN THE CHAIN OF PROVENANCE. MY NAME MATCHES THE ONE LISTED IN THE METEORITICAL SOCIETY BULLETIN OF WHICH I AM A LONGTIME MEMBER IN GOOD STANDING. I HAVE GONE THROUGH GREAT LENGTHS TO PERSONALLY PROCURE, CURATE, CUT, EXTENSIVELY POLISH AND PRESENT THIS METEORITE. THIS IS A HIGH-QUALITY METEORITE SPECIMEN THAT HAS CONTRIBUTED TO THE SCIENCE OF METEORITICS AND BEEN WORKED ON BY THE WORLD RENOWN TEAM OF METEORITE RESEARCHERS LED BY DOCTOR ANTHONY J. IRVINGGUARANTEED AUTHENTICITYMember of the Meteoritical Society & International Meteorite Collectors Association The authenticity of this meteorite has a 100% guarantee.Signed Certificate of Authenticity Included. Comes with a box to protect and show your new meteorite. First class delivery and provenance provided exhibiting important details of the classification & petrography.1cm scale cube for reference purposes not included.
SHIPPING:Shipping and Delivery$3.49 US and $12.75 InternationalIncludes postage costs, packaging & handling.International shipping may be subject to import duties or other taxes.I normally dispatch your order the following day after payment is completed (Mon-Sat). Your goods will be shipped from USA, if you live outside US, the Items normally take 7-14 days but please allow up to 20 days for delivery in case of postal delays.COMBINING SHIPMENTS: Please request a total combined invoice after you are done offerding on all items. Postage can vary when buying multiple items based upon weight.CANADA: Shipping to you may be slightly cheaper than Global destinations, please request a total for single items.
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