{"product_id":"gyarub-zangbo-pallasite-meteorite-full-slice-ungrouped-pallasite-324-46g-tibet","title":"Gyarub Zangbo Pallasite Meteorite Full Slice, Ungrouped Pallasite, 324.46g, Tibet","description":"\u003ch2\u003eA 324.46g metal-dominant full slice of Gyarub Zangbo, an ungrouped pallasite from Tibet\u003c\/h2\u003e\n\u003cp\u003eThis is a 324.46 gram full slice of Gyarub Zangbo, a pallasite recovered on the Qinghai-Tibet Plateau, and a sister slice to our \u003ca href=\"\/de\/products\/gyarub-zangbo-pallasite-meteorite-slice-ungrouped-pallasite-301-28g-tibet\"\u003e301.28g slice, TC-00035\u003c\/a\u003e. This slice is overwhelmingly metal: broad fields of etched iron-nickel with olivine gathered into a few clusters near the margins. The Meteoritical Society revised the classification to Pallasite, ungrouped in Meteoritical Bulletin 114, published in 2026, and as of September 2026 it is 1 of 17 approved meteorites carrying that classification. For background on the type, see our guide on \u003ca href=\"\/de\/pages\/what-is-a-pallasite\"\u003ewhat a pallasite is\u003c\/a\u003e. The photographs show the exact specimen offered.\u003c\/p\u003e\n\n\u003ch2\u003eStructure and features of this slice\u003c\/h2\u003e\n\u003cp\u003eBoth faces are dominated by metal. The etch has brought up a dense network of fine crossing lines across the whole surface, and on a slice with this much open metal the pattern reads edge to edge rather than being broken up by silicate. The Bulletin records kamacite and taenite as the metal phases in Gyarub Zangbo.\u003c\/p\u003e\n\u003cp\u003eOlivine is concentrated rather than scattered. On one face it forms a connected cluster along one margin with a few isolated grains elsewhere; on the reverse the cluster sits on the opposite side, as expected when both faces of one cut are compared. Several larger grains are translucent amber under strong light, while others are deep brown to near black. A few grey-toned pockets hold smaller olivine grains, and a handful of darker inclusions sit alone in the metal. Those features are described here from the photographs only; the phases have not been analysed on this slice.\u003c\/p\u003e\n\u003cp\u003eThe Bulletin describes Gyarub Zangbo material as dark brown olivine and metal in variable proportions from specimen to specimen. This slice sits at the metal-rich end of that range. By comparison, Jiang and colleagues (2023) described the interior of the sample they studied as roughly 60 percent olivine and 36 percent metal by volume, which shows how much a single mass of this meteorite can vary.\u003c\/p\u003e\n\u003cp\u003eBoth faces carry a thin protective epoxy coating. It stabilizes the olivine and slows oxidation of the metal, and the SKU carries the -EP suffix to disclose it.\u003c\/p\u003e\n\n\u003ch2\u003eDiscovery and provenance\u003c\/h2\u003e\n\u003cp\u003eGyarub Zangbo was found in October 2020 by G. Tulga during exploration of the uninhabited Qiangtang region of the Qinghai-Tibet Plateau, northeast of Gyarub Zangbo in Xizang, China, at 33.126 N, 87.079 E. The Bulletin records many disaggregated fragments of olivine and metal, along with a larger single metal-rich specimen found nearby. All of the material was purchased by Ziyao Wang in October and November 2020, and the Bulletin records the main mass with him.\u003c\/p\u003e\n\u003cp\u003eClassification was carried out by A. Irving, UWS, and P. Carpenter, WUSL, and the name was approved on 13 March 2021. The type specimen, 120 g including two polished end cuts, is held at the Burke Museum at the University of Washington. This slice was acquired by Treasure Coast Meteorite Co. and is a sister slice to TC-00035. The Bulletin does not document which recovered piece either slice was cut from, and we make no claim about it.\u003c\/p\u003e\n\u003cp\u003eThe Bulletin indexes a mass of 17.61 kg in 102 pieces from the original MB 110 entry. The MB 114 reclassification writeup states that the updated total mass is now more than 200 kg, so the indexed figure covers only the material in the first announcement. Browse related specimens in our \u003ca href=\"\/de\/collections\/stony-iron-meteorites\"\u003eStony-Iron Meteorites\u003c\/a\u003e collection.\u003c\/p\u003e\n\n\u003ch2\u003eScientific context\u003c\/h2\u003e\n\u003cp\u003eMost pallasites belong to the main group, tied to the IIIAB irons. Gyarub Zangbo fits neither the main group nor the Eagle Station group, and the MB 114 writeup sets out why. Its olivine is close in composition to Eagle Station olivine but has lower Fe\/Mn ratios, and is clearly distinct from main group olivine. It contains orthopyroxene and augite, absent from both groups. Its oxygen isotopes fall on an array between main group and Eagle Station values without overlapping any other ungrouped pallasite. Its metal shows affinity with the IIF irons rather than the IIIAB irons, carries more nickel than the metal of the IVB irons, the Eagle Station pallasites and the main group, and its Ga and Ge contents separate it from both groups.\u003c\/p\u003e\n\u003cp\u003eFor a metal-dominant slice, that last point is the relevant one: nickel content, IIF affinity and Ga and Ge are all properties of the metal. Two abstracts presented at the 54th Lunar and Planetary Science Conference in 2023 examined it in detail: \u003ca href=\"https:\/\/www.hou.usra.edu\/meetings\/lpsc2023\/pdf\/1183.pdf\" rel=\"noopener\" target=\"_blank\"\u003eJiang et al., abstract #1183\u003c\/a\u003e, which describes Gyarub Zangbo as an anomalous carbonaceous pallasite, and \u003ca href=\"https:\/\/www.hou.usra.edu\/meetings\/lpsc2023\/pdf\/2392.pdf\" rel=\"noopener\" target=\"_blank\"\u003eBoesenberg et al., abstract #2392\u003c\/a\u003e, which identified orthopyroxene and described it as the tenth known pyroxene pallasite. Both report conference research rather than Bulletin classification. The full picture is on our \u003ca href=\"\/de\/pages\/gyarub-zangbo-pallasite-the-outer-solar-system-meteorite-found-in-tibet\"\u003eGyarub Zangbo origin and science page\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIs this meteorite officially classified?\u003c\/strong\u003e Yes. Gyarub Zangbo is an officially named meteorite, announced as a pallasite in Meteoritical Bulletin 110 (2022) and revised to Pallasite, ungrouped in Meteoritical Bulletin 114 (2026). Offered by Treasure Coast Meteorite Co., IMCA #3323.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy is there so little olivine on this slice?\u003c\/strong\u003e The Bulletin records olivine and metal in variable proportions from specimen to specimen. This slice comes from a metal-rich part of the meteorite, so the olivine is gathered in clusters near the margins rather than spread across the face.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this slice the same material as TC-00035?\u003c\/strong\u003e It is a sister slice to TC-00035, our 301.28g Gyarub Zangbo slice. Each carries its own serial and its own specimen record.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does the epoxy coating do?\u003c\/strong\u003e It stabilizes the olivine and slows oxidation of the metal without changing how the slice looks. It is disclosed in the SKU with the -EP suffix.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow scarce is this classification?\u003c\/strong\u003e As of September 2026, the Meteoritical Bulletin lists this as 1 of 17 approved meteorites classified as Pallasite, ungrouped.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs white glove delivery available?\u003c\/strong\u003e Yes. As a premium specimen, this slice qualifies for our \u003ca href=\"\/de\/pages\/white-glove-service\"\u003ewhite glove service\u003c\/a\u003e, a fully insured, personal delivery at approved destinations. It is arranged on request before fulfillment, so contact us with your delivery location.\u003c\/p\u003e\n\n\u003ch2\u003eCollector significance\u003c\/h2\u003e\n\u003cp\u003eAt 324.46 grams this is a display slice, and its character comes from the metal. Paired with a classification shared by 17 approved meteorites as of September 2026, it puts the focus on the metal, which carries several of the lines of evidence the Bulletin gives for ungrouped status. Collectors who hold TC-00035 or another olivine-rich slice of this meteorite will find this one a direct counterpart.\u003c\/p\u003e\n\u003cp\u003eThis slice is part of our \u003ca href=\"\/de\/collections\/premium-specimens\"\u003epremium specimens\u003c\/a\u003e and qualifies for our \u003ca href=\"\/de\/pages\/white-glove-service\"\u003ewhite glove service\u003c\/a\u003e: fully insured, personal delivery at approved destinations, arranged on request.\u003c\/p\u003e\n\n\u003cp\u003eThis specimen carries serial TC-00045 in the Treasure Coast Meteorite Co. specimen record programme. Its permanent record, with identification data, provenance and photographs, is at \u003ca href=\"\/de\/pages\/specimen-record-tc-00045\"\u003eSpecimen Record TC-00045\u003c\/a\u003e, and the full index is on the \u003ca href=\"\/de\/pages\/specimen-registry\"\u003especimen registry\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMeteoritical Bulletin entry:\u003c\/strong\u003e \u003ca href=\"https:\/\/www.lpi.usra.edu\/meteor\/metbull.cfm?code=73792\" rel=\"noopener\" target=\"_blank\"\u003eGyarub Zangbo\u003c\/a\u003e | Classification: Pallasite, ungrouped | Find, Xizang, China, October 2020 | MB 110 (2022), reclassified MB 114 (2026) | IMCA #3323\u003c\/p\u003e","brand":"Treasure Coast Meteorite Co.","offers":[{"title":"Default Title","offer_id":46204780150831,"sku":"GYARUB-ZANGBO-324.46G-SLICE-EP","price":5840.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0726\/9724\/9839\/files\/gyarub-zangbo-pallasite-324.46g-polished-face.jpg?v=1789697644","url":"https:\/\/www.tcmeteorites.com\/de\/products\/gyarub-zangbo-pallasite-meteorite-full-slice-ungrouped-pallasite-324-46g-tibet","provider":"Treasure Coast Meteorite Co.","version":"1.0","type":"link"}