Description: Northwest Africa 6963 Name: Northwest Africa 6963 This is an OFFICIAL meteorite name. Abbreviation: NWA 6963 Observed fall: No Year found: 2011 Country: Morocco Mass 8 kg Meteoritical Bulletin: (2012) Martian (shergottite) Recommended: Martian (shergottite) This is 1 of 317 approved meteorites (plus 2 unapproved names) classified as Martian (shergottite). Approved 24 Oct 2011 Revised 8 Jun 2012: New information received from H. Chennaoui Northwest Africa 6963 (NWA 6963) 28°00.148'N 11°07.895'W South, MoroccoFound: 2011Classification: Martian meteorite (Shergottite)History: (H. Chennaoui Aoudjehane, FSAC) In September, 2011, a Moroccan meteorite hunter found the first pieces of NWA 6963 and sold it to AHabibi without giving the exact provenance. The hunter continued collecting pieces in the same area for about 6 months. In mid-May, 2012, the NWA 6963 locality, near the river Oued Touflit, became widely known and hundreds of meteorite hunters went to the area searching for more pieces. Pieces ranging from 100 to 700 g have been recovered, as well as a few small pieces (3-10 g), most of them are broken and partially covered by a thin fusion crust. The total mass may be as much as 8-10 kg. Physical characteristics: The original recovered material was a shiny, dark, 83 g fusion-crusted stone in three pieces. Minimal weathering. Interior shows abundant maskelynite and shock melt vein.Petrography: (C. Agee, UNM) Microprobe examination of a polished epoxy mount shows 60% pyroxene, 35% maskelynite, 2% ulvöspinel, 2% melt pockets with silica, minor merrillite, trace chlorapatite and pyrrhotite. Pyroxenes show core-to-rim zonation. Pyroxene grains 200 μm to >1 mm, maskelynite domains 50 μm to >1 mm.Geochemistry: (C. Agee and N. Wilson, UNM) Two distinct pyroxene compositional trends. Pigeonite Fs29Wo11En59 to Fs58Wo16En26, average: Fs39.7±7.7 Wo13.0±2.3 Fe/Mn=33±3 N=108. Augite Fs21Wo34En45 to Fs39Wo31En30, average: Fs28.1±6.2Wo31.6±1.9 Fe/Mn=31±3 N=24. Maskelynite Or2.3±0.7Ab48.3±2.1An49.4±2.6 N=9. Oxygen isotopes (Z. Sharp, UNM): δ18O=4.332; δ17O=2.528; Δ17O=+0.241 (all per mil). Classification: Achondrite (Martian, shergottite); minimal weathering, high shock grade based on complete transformation of plagioclase to maskelynite. Pyroxene compositional trends are similar, but not identical to Shergotty.Specimens: 17 g including microprobe mount on deposit UNM. AHabibi holds the original recovered mass. Place of purchase:MoroccoDate:2011Latitude:28°00.148'NLongitude:11°07.895'WMass (g):8-10 kgPieces:3Class:Martian (shergottite) I will combine the cost of shipping for all the items you win during a 2 week period that are paid for in a single transaction. Please note. If items are paid for separately, they will be shipped separately due to eBay tracking reasons. Also, I ship items within 24 hours from the time of payment. Therefore, do not pay for any items until you are done bidding so I can ship everything in one package. Please take your time and don't pay for up to 2 weeks. Shipping includes tracking and delivery confirmation.I am a member of the awesome Global Meteorite Association #GMA0021Please only pay in one payment when you are all done. Postage is the same for all the items you win over a 2 week period. ONLY pay in ONE PAYMENT when you are all done winning and ready to buy everything you wanted. I mail out all items the same day or in the morning. Thanks, John Humphries, P.O. BOX 310, Tombstone, AZ 85638
Price: 8.99 USD
Location: Tombstone, Arizona
End Time: 2024-09-24T17:07:57.000Z
Shipping Cost: 6.49 USD
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Return shipping will be paid by: Buyer
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money Back
Type of Mineral: meteorite
Specimen Type: Display Specimens
Item Type: Meteorite
