[meteorite-list] NWA 6704 Specimens - AD
From: Greg Hupé <gmhupe_at_meteoritecentral.com>
Date: Tue, 31 May 2011 13:47:01 -0400 Message-ID: <5F17EA3A1A844328AD4C017FFAD34C0C_at_Gregor> Dear List Members, I announced a 'most intriguing' New Ungrouped Achondrite earlier this morning, Northwest Africa 6704. Please find below a listing of what is currently available. Concerning pricing, I asked a few people what they thought this meteorite should be priced at considering the special characteristics it holds; 1) Ungrouped and Scientifically important. 2) Numerous bubble trains that are currently under analysis to see if there is still any gases trapped within some. 3) Very fresh and attractive matrix. 4) Rare minerals such as Awaruite and Very High nickel content in the metal inclusions! A price range of $100-150.00 per gram was suggested for polished slices but I decided I wanted to offer NWA 6704 at a deeply discounted price to List Members. I will be offering it for less than half that amount for my initial public offering here. If future analysis identifies trapped gases or even 'atmosphere' from the parent body, you can be sure I will be raising prices in the future. Along with the steeply discounted Special price, I am also going to include a Free Gift that you will see at the end of the specimen list below. NWA 6704 has a very dense matrix which polishes to a high luster, making for a very collectible meteorite. After cutting, polishing, providing type samples and preserving the majority in a single main mass, there is a limited amount available to collectors and museums. Each professionally prepared specimen comes with a color ID card from The Hup? Collection and will be shipped in a plastic display case, Riker-style box or Gem Jar, depending on size of specimen, larger fragments will be shipped without display case. Available Specimens (14 slices, 1 end cut, 26 fragments and 1 Main Mass): 20.03g Slice 75mm x 44mm x 2mm http://www.lunarrock.com/nwa6704/slices_frags/IMG_0001.jpg 19.26g Slice 71mm x 40 x 2mm http://www.lunarrock.com/nwa6704/slices_frags/IMG_0002.jpg 19.2g Slice 71mm x 36mm x 2mm http://www.lunarrock.com/nwa6704/slices_frags/IMG_0003.jpg 18.92g (This slice is the only one that has been stabilized with removable adhesive to see how it looked) 74mm x 47mm x 2mm http://www.lunarrock.com/nwa6704/slices_frags/IMG_0004.jpg 18.1g Slice 76mm x 41mm x 2mm http://www.lunarrock.com/nwa6704/slices_frags/IMG_0005.jpg 17.98g Slice 72mm x 40mm x 2mm http://www.lunarrock.com/nwa6704/slices_frags/IMG_0006.jpg 16.93g Slice 65mm x 48mm x 2mm http://www.lunarrock.com/nwa6704/slices_frags/IMG_0007.jpg 15.78g Slice 64mm x 46mm x 2mm http://www.lunarrock.com/nwa6704/slices_frags/IMG_0008.jpg 15.74g Slice 70mm x 47mm x 2mm http://www.lunarrock.com/nwa6704/slices_frags/IMG_0009.jpg 15.67g Slice 72mm x 38mm x 2mm http://www.lunarrock.com/nwa6704/slices_frags/IMG_0010.jpg 14.5g Slice 71mm x 46mm x 2mm http://www.lunarrock.com/nwa6704/slices_frags/IMG_0011.jpg 15.10g Slice 67mm x 44mm x 2mm http://www.lunarrock.com/nwa6704/slices_frags/IMG_0012.jpg 13.31g Slice 64mm x 40mm x 2mm http://www.lunarrock.com/nwa6704/slices_frags/IMG_0013.jpg 12.06g Slice 61mm x 35mm x 2mm http://www.lunarrock.com/nwa6704/slices_frags/IMG_0014.jpg 76.4g End Cut (Only piece of NWA 6704 that has a 'patch' of fusion crust, from original 490-gram piece) (I will be asking a premium on this one) 68mm x 36mm x 27mm 1) http://www.lunarrock.com/nwa6704/slices_frags/IMG_0015.jpg 2) http://www.lunarrock.com/nwa6704/slices_frags/IMG_0016.jpg 63.5g Fragment 45mm x 42mm x 23mm 1) http://www.lunarrock.com/nwa6704/slices_frags/IMG_0017.jpg 2) http://www.lunarrock.com/nwa6704/slices_frags/IMG_0018.jpg 58.4g Fragment 59mm x 36mm x 17mm 1) http://www.lunarrock.com/nwa6704/slices_frags/IMG_0019.jpg 2) http://www.lunarrock.com/nwa6704/slices_frags/IMG_0020.jpg 38.6g Fragment 28mm x 27mm x 22mm 1) http://www.lunarrock.com/nwa6704/slices_frags/IMG_0021.jpg 2) http://www.lunarrock.com/nwa6704/slices_frags/IMG_0022.jpg 23.8g Fragment 30mm x 21mm x 16mm 1) http://www.lunarrock.com/nwa6704/slices_frags/IMG_0023.jpg 2) http://www.lunarrock.com/nwa6704/slices_frags/IMG_0024.jpg 22.5g Fragment 32mm x 25mm x 15mm 1) http://www.lunarrock.com/nwa6704/slices_frags/IMG_0025.jpg 2) http://www.lunarrock.com/nwa6704/slices_frags/IMG_0026.jpg 11.2g Fragment 30mm x 18mm x 12mm http://www.lunarrock.com/nwa6704/slices_frags/IMG_0027.jpg 9.334g Fragment 22mm x 20mm x 11mm http://www.lunarrock.com/nwa6704/slices_frags/IMG_0028.jpg 8.058g Fragment 25mm x 16mm x 19mm http://www.lunarrock.com/nwa6704/slices_frags/IMG_0029.jpg 6.7g Fragment 23mm x 18mm x 10mm http://www.lunarrock.com/nwa6704/slices_frags/IMG_0030.jpg 6.386g Fragment 20mm x 15mm x 10mm http://www.lunarrock.com/nwa6704/slices_frags/IMG_0031.jpg 5.446g Fragment 20mm x 18mm x 5mm http://www.lunarrock.com/nwa6704/slices_frags/IMG_0032.jpg 4.09g Fragment 26mm x 10mm x 7mm http://www.lunarrock.com/nwa6704/slices_frags/IMG_0033.jpg 3.988g Fragment 18mm x 12mm x 10mm http://www.lunarrock.com/nwa6704/slices_frags/IMG_0034.jpg 2.912g Fragment 12mm x 12mm x 10mm http://www.lunarrock.com/nwa6704/slices_frags/IMG_0035.jpg 2.416g Fragment 11mm x 11mm x 7mm http://www.lunarrock.com/nwa6704/slices_frags/IMG_0036.jpg 2.404g Fragment 17mm x 8mm x 5mm http://www.lunarrock.com/nwa6704/slices_frags/IMG_0037.jpg 2.322g Fragment 12mm x 11mm x 5mm http://www.lunarrock.com/nwa6704/slices_frags/IMG_0038.jpg 1.148g Fragment 11mm x 10mm x 6mm http://www.lunarrock.com/nwa6704/slices_frags/IMG_0039.jpg 922mg Fragment 11mm x 6mm x 6mm http://www.lunarrock.com/nwa6704/slices_frags/IMG_0040.jpg 814mg Fragment 10mm x 6mm x 7mm http://www.lunarrock.com/nwa6704/slices_frags/IMG_0041.jpg 802g Fragment 10mm x 8mm x 6mm http://www.lunarrock.com/nwa6704/slices_frags/IMG_0042.jpg 2023-gram Main Mass 12.5cm x 10.5cm x 9cm 1) http://www.lunarrock.com/nwa6704/masses/IMG_0001.jpg 2) http://www.lunarrock.com/nwa6704/masses/IMG_0002.jpg 3) http://www.lunarrock.com/nwa6704/masses/IMG_0003.jpg 548-gram Fragment 11cm x 8.25cm x 4cm 1) http://www.lunarrock.com/nwa6704/masses/IMG_0004.jpg 2) http://www.lunarrock.com/nwa6704/masses/IMG_0005.jpg 3) http://www.lunarrock.com/nwa6704/masses/IMG_0006.jpg 447-gram Fragment (This piece has one tiny 4mm spot of fusion crust, no other pieces have any other than the end cut listed above) 11.75cm x 6.5cm x 5cm 1) http://www.lunarrock.com/nwa6704/masses/IMG_0007.jpg 2) http://www.lunarrock.com/nwa6704/masses/IMG_0008.jpg 3) http://www.lunarrock.com/nwa6704/masses/IMG_0009.jpg 395-gram Fragment 9.5cm x 5cm x 4.75cm 1) http://www.lunarrock.com/nwa6704/masses/IMG_0010.jpg 2) http://www.lunarrock.com/nwa6704/masses/IMG_0011.jpg 374-gram Fragment 10.5cm x 8cm x 3cm 1) http://www.lunarrock.com/nwa6704/masses/IMG_0012.jpg 2) http://www.lunarrock.com/nwa6704/masses/IMG_0013.jpg 144-gram Fragment 1) http://www.lunarrock.com/nwa6704/masses/IMG_0014.jpg (Notice visible metal on exterior!) 2) http://www.lunarrock.com/nwa6704/masses/IMG_0015.jpg 3) http://www.lunarrock.com/nwa6704/masses/IMG_0016.jpg Special FREE Offers to List Members (limit one per person): Purchases over $200.00 will receive a Polished Black 1cm "Hup?" scale cube made of Tungsten Carbide, comes w/ velvet bag ($40.00 Value!) see image here take with exterior surface of NWA 6704: http://www.lunarrock.com/nwa6704/HupeCubeBlack.jpg Purchases over $350.00 will receive a Polished Gold-Plated 1cm "Hup?" scale cube made of Tungsten Carbide, comes w/ velvet bag ($50.00 Value!) see image here take with exterior surface of NWA 6704: http://www.lunarrock.com/nwa6704/HupeCubeGold.jpg Please email me Off-List for pricing. I will give first choice in the order that I receive emails, so please indicate a First, Second and Third preferences to be sure you get one of the ones you are interested in. I have also listed several specimens under both of my eBay accounts; "NaturesVault" and "AncientDiscoveries" (sorry, no slices there yet). The eBay offerings have a somewhat higher price suggested. Thank you for considering NWA 6704 for your scientific or collecting needs, I appreciate it! Best Regards, Greg ==================== Greg Hup? The Hup? Collection gmhupe at centurylink.net www.LunarRock.com NaturesVault (eBay) AncientDiscoveries (eBay)(formerly 'NaturesVault') IMCA 3163 ==================== Click here for my current eBay auctions, I have two accounts now: 1) NaturesVault - http://search.ebay.com/_W0QQsassZnaturesvault 2) AncientDiscoveries (formerly 'NaturesVault') - http://shop.ebay.com/ancientdiscoveries/m.html?_dmd=1&_ipg=50&_sop=12&_rdc=1 Original Announcement>> Dear List Members, Over the last four months I have been reorganizing my company to make things easier for me in order to better serve the meteorite community. To start my official Grand Re-Opening, I have the honor and privilege to introduce to you... Northwest Africa 6704... ...a 'most intriguing' New Ungrouped Achondrite. NWA 6704 is a most intriguing meteorite unlike any others known to man! Not only does it have tremendous scientific value, it is one of the most visually appealing meteorites with its dazzling display of yellowish-green orthopyroxene crystals containing small grains of olivine and chromite surrounded by large intercumulus grains of albite enclosing small grains of awaruite (a rare very nickel-rich metal alloy). Oxygen isotope results plot this achondrite within the field for acapulcoites-lodranites, but that is where any comparison stops. NWA 6704 is unlike any other meteorite! If that isn?t enough, this incredible meteorite contains an abundance of ?bubble trains? within the orthopyroxene which appear to be devoid of fluid upon initial inspection. Ongoing analyses are currently being performed to measure the cosmogenic noble gases to determine its CRE age (time spent in space) and to possibly detect trapped gases or even atmosphere from the NWA 6704 parent body! Close-up image of the NWA 6704 matrix: http://www.lunarrock.com/nwa6704/nwa6704matrix.jpg Bubble trains and cleavages in orthopyroxene (width of field 0.593 mm) http://www.lunarrock.com/nwa6704/nwa6704bubbleTrain1.jpg Bubble trains and cleavages in orthopyroxene (width of field 0.237 mm) http://www.lunarrock.com/nwa6704/nwa6704bubbleTrain2.jpg NWA 6704 has a Total Known Weight of 8387 grams in a single, naturally fractured stone that was discovered in Northwest Africa in 2010. In their eagerness to see what was ?inside? the stone, the Algerian finders unfortunately broke the largest pieces, as can be seen in the image of the reassembled stone below. Also visible are the natural breaks along extended segment boundaries which have been sandblasted over time in the Sahara, smoothing the edges on the largest pieces and a more ?rounding? of the smaller fragments. Oddly, NWA 6704 is almost entirely devoid of visible fusion crust; only a single 1.5cm x 2cm patch exists, raising questions as to how this can be. Through a determined effort over a four month period, the distributed parts were purchased by Greg Hup? and reassembled into a single stone resembling a ?puzzle?. It is remarkable that the finders were able to collect even the smallest of fragments! Reassembled mass of the NWA 6704 ?puzzle? meteorite (measures 27cm x 16cm x 14cm): http://www.lunarrock.com/nwa6704/nwa6704complete1.jpg Close-up image of only fusion crust ?patch? on NWA 6704 (measures 1.2cm x 2cm): http://www.lunarrock.com/nwa6704/nwa6704crust1.jpg Thin section image of NWA 6704 in cross-polarized light (width of field 5 mm): http://www.lunarrock.com/nwa6704/nwa6704ThinSection1.jpg Officially accepted classification of NWA 6704 entered in the Meteoritical Bulletin: http://www.lpi.usra.edu/meteor/metbull.php?code=53609 (Note: the TKW is 8387 grams with 42 pieces, entry errors should be corrected soon). Officially accepted classification of NWA 6704 entered in the Meteoritical Bulletin: [TKW corrected here] Northwest Africa 6704 (NWA 6704) Algeria Purchased: 2011 Feb-May Classification: Ungrouped achondrite History: A single, dense, yellowish-green stone was found in pieces in Algeria, and was purchased in February 2011 at the Tucson Gem and Mineral Show and over subsequent weeks from Moroccan dealers by Greg Hup?. Physical characteristics: Forty two pieces fit together as a single ovoid mass (8387 g) with rounded, shiny exterior and small patches of remnant black fusion crust. The interior is mostly pale yellowish green with rare darker brownish grains and sparsely distributed small grains of opaque oxide and metal. Petrography: (A. Irving and S. Kuehner, UWS): Overall medium grained with an igneous cumulate texture. Small grains of olivine (0.5-0.8 mm) and chromite (0.1-0.6 mm) enclosed within large (to 4 mm) orthopyroxene oikocrysts, which are in turn surrounded by large optically continuous, intercumulus grains of untwinned albite and <0.1 mm awaruite. The silicates contain curvilinear trains of tiny rounded inclusions (2-20 ?m), which appear on polished surfaces to be empty bubbles with smooth rounded walls. Geochemistry: Olivine (Fa51.6-53.2; FeO/MnO=120-140; NiO=0.9-1.0 wt.%), orthopyroxene (Fs41.6-42.4Wo2.8-3.6, FeO/MnO=81-82; Cr2O3=0.3 wt.%), plagioclase (Ab92-93An4-3Or4). Oxygen isotopes (R. Tanaka, OkaU): replicate analyses of acid-washed material by laser fluorination gave: ?17O 1.015, 0.880; ?18O 3.922, 3.613; ?17O -1.048, -1.020 per mil. Classification: Achondrite (ungrouped). This specimen is unlike other achondrites in its combined features: relatively ferroan mafic silicate minerals with elevated FeO/MnO ratios and anomalous Ni contents, extremely sodic plagioclase, very Ni-rich metal, and oxygen isotopic composition that plots within the field for acapulcoites-lodranites. Weathering is low and limited to minor coatings of pale orange desert dust on broken surfaces. Unshocked. Specimens: A total of 20.5 g of type material and two polished thin sections are on deposit at UWS. The remaining material is held by GHup?. Received on Tue 31 May 2011 01:47:01 PM PDT |
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