{"product_id":"4-83g-gyarud-zangbo-pallasite-meteorite-slice-from-vietnam","title":"4.83g GYARUB ZANGBO Ungrouped Pallasite Meteorite Slice from Tibet","description":"\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOn Offer:\u003c\/strong\u003e 4.83 gram Gyarub Zangbo ungrouped pallasite meteorite slice from the \u003cmeta charset=\"utf-8\"\u003eQiangtang \"No Man's Land\" area of the Tibetan Plateau. \u003cbr\u003e\u003cstrong\u003e\u003cbr\u003eDimensions:\u003c\/strong\u003e 28.08 mm x 22.67 mm x\u003cimg\u003e 2.11 mm\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e\u003cbr\u003eOfficial name:\u003c\/strong\u003e \u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eGyarub Zangbo\u003cbr\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cbr\u003eType:\u003c\/strong\u003e \u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003ePallasite, ungrouped\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003cstrong style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003e\u003cbr\u003eCountry: \u003c\/strong\u003e\u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003eTibet, Autonomous Region of China \u003cbr\u003e\u003c\/span\u003e\u003cstrong style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003e\u003cbr\u003eYear found: \u003c\/strong\u003e\u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003eOct, 2020\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003cstrong style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003e\u003cbr\u003eHistory\u003c\/strong\u003e\u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003e:  In October 2020, an exploration trip exploration by Mr. G. Tulga on the Qinghai-Tibet Plateau in the Qiangtang uninhabited area NE of Gyarub Zangbo resulted in the discovery of many disaggregated fragments composed of olivine+metal at 33.126°N, 87.079°E, as well as a much larger single metal-rich specimen nearby at 33.127°N, 87.080°E. \u003cbr\u003e\u003c\/span\u003e\u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cbr\u003eDescription:\u003c\/strong\u003e \u003cmeta charset=\"utf-8\"\u003e4.83g \u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003eGyarub Zangbo\u003c\/span\u003e ungrouped pallasite meteorite complete slice. The \u003cspan\u003eGyarub Zangbo\u003c\/span\u003e is a rare ungrouped pallasite that does not fit in the pallasite main group (PMG). More thorough analysis of this rare pallasite from Tibet shows phases other than just olivine, including both low and high calcium pyroxenes, two types of chromite, troilite, schreibersite, and the phosphates stanfieldite and farringtonite. Also of note is that the metal in this ungrouped pallasite is more closely related to the IIF iron meteorite group. Stable oxygen isotope analysis plots this ungrouped pallasite outside of both the PMG and ES pallasite parent bodies. * See orange X in lower left corner of the plot below to see where the oxygen isotopes in this ungrouped pallasite plot compared to other pallasites.\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cbr\u003eStable Oxygen Isotope Plot:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cdiv\u003e\n\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1185\/2762\/files\/669A7695-A820-4535-941B-229EB451CA46.jpg?v=1792446821\" alt=\"\"\u003e\u003c\/span\u003e\u003cstrong\u003eWhat you get:\u003c\/strong\u003e \u003cmeta charset=\"utf-8\"\u003e4.83g \u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003eGyarub Zangbo\u003c\/span\u003e meteorite\u003cspan\u003e slice as shown\u003c\/span\u003e, membrane storage\/shipping box, and signed Certificate of Authenticity.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eWe offer a 100% no questions asked 30 day return policy. \u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan\u003eSEE OFFICIAL METEORITICAL SOCIETY ENTRY BELOW\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003ch1 style=\"text-align: center;\"\u003eGyarub Zangbo\u003c\/h1\u003e\n\u003cdiv class=\"alert\"\u003e\n\u003cp\u003e\u003cstrong\u003eStatus: \u003c\/strong\u003eOfficial\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"container mb-4\"\u003e\n\u003ctable class=\"text-table th-left\"\u003e\n\u003ctbody\u003e\n\u003ctr class=\"row\"\u003e\n\u003cth class=\"col-12 col-md-3 col-lg-2\"\u003eBasic information\u003c\/th\u003e\n\u003ctd class=\"col-12 col-md-9 col-lg-10\"\u003e\n\u003cp\u003e\u003cstrong\u003eName:\u003c\/strong\u003e Gyarub Zangbo This is an OFFICIAL meteorite name.\u003cbr\u003e\u003cstrong\u003eAbbreviation:\u003c\/strong\u003e There is no official abbreviation for this meteorite.\u003cbr\u003e\u003cstrong\u003eObserved fall: \u003c\/strong\u003eNo\u003cbr\u003e\u003cstrong\u003eYear found: \u003c\/strong\u003eunknown\u003cbr\u003e\u003cstrong\u003eCountry: \u003c\/strong\u003eChina\u003cbr\u003e\u003cstrong style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003eMas\u003c\/strong\u003e\u003cstrong style=\"font-size: 13.3333px; background-color: rgb(239, 239, 239);\"\u003e\u003cspan style=\"color: #000000; font-family: Arial;\"\u003e\u003ci\u003es: \u003c\/i\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003cspan style=\"font-size: 13.3333px; background-color: rgb(239, 239, 239);\"\u003e\u003cspan style=\"color: #000000; font-family: Arial;\"\u003e\u003ci\u003e17.\u003c\/i\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003e61 kg\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"row\"\u003e\n\u003cth class=\"col-12 col-md-3 col-lg-2\"\u003e\n\u003cp\u003eClassification history:\u003c\/p\u003e\n\u003c\/th\u003e\n\u003ctd class=\"col-12 col-md-9 col-lg-10\"\u003e\n\u003cp\u003e\u003cstrong\u003eMeteoritical Bulletin, \u003ca href=\"https:\/\/doi.org\/10.1111\/maps.13918\" title=\"Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4\"\u003eMB 110\u003c\/a\u003e (2022): \u003c\/strong\u003ePallasite\u003cbr\u003e\u003cstrong\u003eRecommended:\u003c\/strong\u003e Pallasite, ungrouped \u003ca href=\"https:\/\/www.lpi.usra.edu\/meteor\/metbullclass.php?sea=Pallasite%2C+ungrouped\"\u003e\u003c\/a\u003e\u003cbr\u003e\u003cbr\u003eThis is 1 of 18 approved meteorites classified as Pallasite, ungrouped. \u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"row\"\u003e\n\u003cth class=\"col-12 col-md-3 col-lg-2\"\u003eComments:\u003c\/th\u003e\n\u003ctd class=\"col-12 col-md-9 col-lg-10\"\u003eApproved 13 Mar 2021\u003cbr\u003eRevised 7 Apr 2026: Reclassified in MB114\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"row\"\u003e\n\u003cth class=\"col-12 col-md-3 col-lg-2\"\u003eWriteup \u003c\/th\u003e\n\u003ctd class=\"col-12 col-md-9 col-lg-10\" id=\"writeups\"\u003eWriteup from \u003ca href=\"https:\/\/doi.org\/10.1111\/maps.13918\"\u003eMB 110:\u003c\/a\u003e\u003cbr\u003e\n\u003cdiv class=\"writeup\"\u003e\n\u003cp class=\"MBNormal\"\u003e\u003cstrong\u003eGyarub Zangbo\u003c\/strong\u003e        33.126°N, 87.079°E\u003c\/p\u003e\n\u003cp class=\"MBIndent\"\u003eXizang, China\u003c\/p\u003e\n\u003cp class=\"MBIndent\"\u003eFind: 2020 Oct\u003c\/p\u003e\n\u003cp class=\"MBIndent\"\u003eClassification: Pallasite\u003c\/p\u003e\n\u003cp class=\"MBNormal\"\u003e\u003cstrong\u003eHistory\u003c\/strong\u003e: In October 2020 exploration by Mr. G. Tulga on the Qinghai-Tibet Plateau in the Qiangtang uninhabited area NE of Gyarub Zangbo resulted in the discovery of many disaggregated fragments composed of olivine+metal at 33.126°N, 87.079°E, as well as a much larger single metal-rich specimen nearby at 33.127°N, 87.080°E. All of this material was purchased by Ziyao Wang in October and November, 2020.\u003c\/p\u003e\n\u003cp class=\"MBNormal\"\u003e\u003cstrong\u003ePhysical characteristics\u003c\/strong\u003e: The material is composed of dark brown olivine and metal in variable proportions from specimen to specimen.\u003c\/p\u003e\n\u003cp class=\"MBNormal\"\u003e\u003cstrong\u003ePetrography\u003c\/strong\u003e: (A. Irving, \u003cem\u003eUWS\u003c\/em\u003e and P. Carpenter, \u003cem\u003eWUSL\u003c\/em\u003e) Coarse grained aggregate (mean grainsize ~5 mm) with simple mineralogy of olivine and metal (both kamacite and taenite).\u003c\/p\u003e\n\u003cp class=\"MBNormal\"\u003e\u003cstrong\u003eGeochemistry\u003c\/strong\u003e: Olivine (Fa\u003csub\u003e21.6-22.8\u003c\/sub\u003e, FeO\/MnO = 61-72, N = 4).\u003c\/p\u003e\n\u003cp class=\"MBNormal\"\u003e\u003cstrong\u003eClassification\u003c\/strong\u003e: Pallasite.\u003c\/p\u003e\n\u003cp class=\"MBNormal\"\u003e\u003cstrong\u003eSpecimens\u003c\/strong\u003e: 120 g including two polished endcuts at \u003cem\u003eUWB\u003c\/em\u003e; remainder with \u003cem\u003eWangZ\u003c\/em\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cbr\u003eWriteup from \u003ca href=\"https:\/\/doi.org\/10.1111\/maps.70157\"\u003eMB 114:\u003c\/a\u003e\u003cbr\u003e\n\u003cdiv class=\"writeup\"\u003e\n\u003cp class=\"MBNormal\"\u003e\u003cstrong\u003eGyarub Zangbo, \u003cem\u003ereclassification\u003c\/em\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp class=\"MBNormal\"\u003eGyarub Zangbo was announced in Met. Bull. 110 simply as a pallasite, without assignment to a pallasite group. In addition to the kamacite, taenite and olivine reported in the original description, J. Boesenberg (\u003cem\u003eBrownU\u003c\/em\u003e) and T. Gao (\u003cem\u003ePMO\u003c\/em\u003e) subsequently identified other minor phases including troilite, schreibersite, chromite, phosphates (stanfieldite and farringtonite), as well as pyroxenes. Additional mineral analyses (T. Gao and Y. Jiang, \u003cem\u003ePMO\u003c\/em\u003e; J. Boesenberg, \u003cem\u003eBrownU\u003c\/em\u003e) include olivine (Fa\u003csub\u003e21.6±0.4\u003c\/sub\u003e, Fe\/Mn = 66.9±3.9, n=41), orthopyroxene (Fs\u003csub\u003e19.1±2.3\u003c\/sub\u003eWo\u003csub\u003e2.0±0.8\u003c\/sub\u003e, N=21), augite (Fs\u003csub\u003e8.2±0.4\u003c\/sub\u003eWo\u003csub\u003e43.0±1.6\u003c\/sub\u003e, N=6) and two kinds of chromite (Mg# = 21.5±0.6, 8.0±3.2; Cr# = 87.8±0.6). Trace element compositions of the metal were published by \u003cspan\u003e\u003ca href=\"https:\/\/www.hou.usra.edu\/meetings\/lpsc2023\/pdf\/1183.pdf\"\u003eJiang et al. (2023)\u003c\/a\u003e\u003c\/span\u003e and \u003cspan\u003e\u003ca href=\"https:\/\/www.hou.usra.edu\/meetings\/lpsc2023\/pdf\/2392.pdf\"\u003eBosenberg et al. (2023)\u003c\/a\u003e\u003c\/span\u003e. Oxygen isotopes measured by H. Bao (\u003cem\u003eNJU\u003c\/em\u003e) are δ\u003csup\u003e17\u003c\/sup\u003eO = -1.294±0.006, -1.3210±0.0036; δ\u003csup\u003e18\u003c\/sup\u003eO = 1.824±0.005, 1.7293±0.0046; Δ\u003csup\u003e17\u003c\/sup\u003eO = -2.262±0.004, -2.2385±0.0060 (all in ‰). Oxygen isotopes measured by D. Ibarra [Ed: and R. Havel] (\u003cem\u003eBrownU\u003c\/em\u003e) are δ\u003csup\u003e17\u003c\/sup\u003eO =-1.408; δ\u003csup\u003e18\u003c\/sup\u003eO = 1.563; Δ\u003csup\u003e17\u003c\/sup\u003eO = -2.230 (all in ‰). The updated total mass is now \u0026gt;200 kg.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp class=\"MBNormal\"\u003eThese data taken together indicate that Gyarub Zangbo (GZ) is an ungrouped pallasite. Explanation (J. Boesenberg, \u003cem\u003eBrownU\u003c\/em\u003e, W. Hsu, \u003cem\u003ePMO\u003c\/em\u003e): Olivine (with Mg# of 21-22) in GZ is similar in composition to that in the \u003ca href=\"https:\/\/www.lpi.usra.edu\/meteor\/metbull.php?code=7761\"\u003eEagle Station\u003c\/a\u003e (ES) pallasites, but with lower Fe\/Mn ratios (55-65 in GZ vs 95-100 in ES), and is significantly distinct from PMG olivine compositions (Fa\u003csub\u003e12\u003c\/sub\u003e). The presence of pyroxene in GZ contrasts with its complete absence in either ES or Main Group (PMG) pallasites. Oxygen isotopes for GZ plot along an array between values for the PMG and ES pallasites, but do not appear to overlap with values for any other ungrouped pallasites. Metal in GZ differs from that in IIIAB irons and instead shows affinity with IIF irons. Finally, the Ni content in GZ metal is higher than in metal in the IVB irons, ES, and PMG pallasites, and the Ga-Ge contents separate GZ from the PMG or ES groups.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"row\"\u003e\n\u003cth class=\"col-12 col-md-3 col-lg-2\"\u003eBibliography:\u003c\/th\u003e\n\u003ctd class=\"col-12 col-md-9 col-lg-10\"\u003e\n\u003cul\u003e\n\u003cli\u003eBoesenberg J.S., Humayun M., Irving A.J., and Ibarra D.E. (2023) New pyroxene pallasites: Bordji Badji Mokhrar 001 AND Gyarub Zangbo, and a plethora of pallasite parent bodies. 54th Lunar and Planetary Science Conference 2023 (LPI Contrib. No. 2806), #2392 \u003c\/li\u003e\n\u003cli\u003eJiang Y., Zhang X.R., He W.Z., Liao S.Y., Herd C., Peng Y.B., and Hsu W.B. (2023) Gyarub Zangbo: An anomalous carbonaceous pallasite. 54th Lunar and Planetary Science Conference 2023 (LPI Contrib. No. 2806), #1183 \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"row\"\u003e\n\u003cth class=\"col-12 col-md-3 col-lg-2\"\u003eData from: \u003ca href=\"https:\/\/doi.org\/10.1111\/maps.13918\"\u003eMB110\u003c\/a\u003e\u003cbr\u003eTable 0 Line 0:\u003c\/th\u003e\n\u003ctd class=\"col-12 col-md-9 col-lg-10\"\u003e\n\u003cstrong\u003eState\/Prov\/County:\u003c\/strong\u003e Xizang\u003cbr\u003e\u003cstrong\u003ePlace of purchase:\u003c\/strong\u003e China\u003cbr\u003e\u003cstrong\u003eDate:\u003c\/strong\u003e 2020 Oct\u003cbr\u003e\u003cstrong\u003eLatitude:\u003c\/strong\u003e 33.126°N\u003cbr\u003e\u003cstrong\u003eLongitude:\u003c\/strong\u003e 87.079°E\u003cbr\u003e\u003cstrong\u003eMass (g):\u003c\/strong\u003e 17614\u003cbr\u003e\u003cstrong\u003ePieces:\u003c\/strong\u003e 102\u003cbr\u003e\u003cstrong\u003eClass:\u003c\/strong\u003e Pallasite\u003cbr\u003e\u003cstrong\u003eShock stage:\u003c\/strong\u003e low\u003cbr\u003e\u003cstrong\u003eWeathering grade:\u003c\/strong\u003e low\u003cbr\u003e\u003cstrong\u003eFayalite (mol%):\u003c\/strong\u003e 21.6-22.8\u003cbr\u003e\u003cstrong\u003eClassifier:\u003c\/strong\u003e A. Irving, UWS, and P. Carpenter, WUSL\u003cbr\u003e\u003cstrong\u003eType spec mass (g):\u003c\/strong\u003e 120.0\u003cbr\u003e\u003cstrong\u003eType spec location:\u003c\/strong\u003e UWB\u003cbr\u003e\u003cstrong\u003eMain mass:\u003c\/strong\u003e WangZ\u003cbr\u003e\u003cstrong\u003eFinder:\u003c\/strong\u003e G. Tulga\u003cbr\u003e\u003cstrong\u003eComments:\u003c\/strong\u003e Work names WZY-01, WZY-10; submitted by A. Irving\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Top Meteorite","offers":[{"title":"Default Title","offer_id":51101825106145,"sku":"GYARUDZANGBOSL26_4.83_01","price":96.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1185\/2762\/files\/Meteorite-Top-Gyarub-Pallasite-meteor_GyarubZangboSL26_4.83_01_2_copy.jpg?v=1792436941","url":"https:\/\/topmeteorite.com\/products\/4-83g-gyarud-zangbo-pallasite-meteorite-slice-from-vietnam","provider":"Top Meteorite","version":"1.0","type":"link"}