SKU: 95470390820

Gyarub Zangbo Pallasite Meteorite Slice, Ungrouped Pallasite, 76.62g, Tibet

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Description

Gyarub Zangbo Pallasite Meteorite Slice, Ungrouped Pallasite, 76.62g, TibetHoney toned olivine and mirrored metal in an ungrouped Tibetan pallasite This slice of Gyarub Zangbo is not a typical pallasite. Geochemical analysis of its olivine and metallic phases, combined with oxygen and chromium isotope data, confirms that Gyarub Zangbo originated from a parent body distinct from all other known pallasites. It is classified as an ungrouped pallasite, a designation confirmed by the Meteoritical Society in MB 114 (April 2026)

Honey-toned olivine and mirrored metal in an ungrouped Tibetan pallasite

This slice of Gyarub Zangbo is not a typical pallasite. Geochemical analysis of its olivine and metallic phases, combined with oxygen and chromium isotope data, confirms that Gyarub Zangbo originated from a parent body distinct from all other known pallasites. It is classified as an ungrouped pallasite, a designation confirmed by the Meteoritical Society in MB 114 (April 2026) that places it outside all established pallasite groups.

Hold this 76.62g specimen up to bright light and you see two faces of the same crystal field at once: clusters that glow with rich amber and honey light, and adjacent grains that remain a deep olive-green or near-black where terrestrial weathering took hold. Polished iron-nickel matrix wraps each crystal with a soft mirrored surface, and the etched Widmanstatten pattern emerges along the broader metal sections. A thin epoxy sealant applied to both polished faces keeps the olivine stable and limits ongoing oxidation.

Structure and features

Gyarub Zangbo's olivine fayalite content is Fa21.6-22.8 mol%, slightly higher than typical main group pallasites and consistent with its ungrouped status. The metallic component contains approximately 15.8% nickel, also elevated relative to most main group pallasites, and trace amounts of cobalt, copper, and germanium that further distinguish it from the PMG parent body.

The olivine in this 76.62g slice ranges from tiny sub-millimeter specks to larger centimeter-scale clusters, distributed unevenly across the polished surface. Dense crystal pockets give way to wide expanses of mirrored iron-nickel metal, producing a textured internal landscape unique to this specimen. A portion of the perimeter retains its unpolished natural exterior, with oxidized crust that documents the long terrestrial weathering history this pallasite endured on the Qinghai-Tibet Plateau.

Discovery and provenance

Gyarub Zangbo was discovered in October 2020 by Mr. Tulga during exploration of the uninhabited Qiangtang region of the Qinghai-Tibet Plateau, northeast of the Gyarub Zangbo River in Tibet, China. The find comprised disaggregated olivine and metal fragments scattered across the surface, along with a larger metal-rich mass nearby. The total recovered weight was approximately 17.6 kilograms, making Gyarub Zangbo one of the rarest pallasites available to collectors by total known weight.

The remote plateau environment preserved the specimens from human disturbance while subjecting them to high-altitude weathering. The result is a pallasite with significant surface oxidation on natural faces but excellent interior preservation where the polished slice reveals the original olivine-metal structure. Learn more about this meteorite type: What Is a Pallasite?

Scientific context

The ungrouped classification of Gyarub Zangbo is its most scientifically significant attribute. Main group pallasites, the most common type, including Sericho, Esquel, and Brenham, share a common parent body linked to the IIIAB iron meteorite group. Gyarub Zangbo does not. Its oxygen isotopic signatures plot along an array between PMG and Eagle Station pallasite values but do not overlap with any other known ungrouped pallasites. The metal composition shows affinity with IIF irons rather than the IIIAB irons linked to the main group, and nickel content is elevated above both Eagle Station and PMG values. These data collectively confirm a parent body distinct from all established pallasite groups.

This makes Gyarub Zangbo a window into a differentiated parent body not represented by any other pallasite in collections. The reclassification to ungrouped in MB 114 (revised April 2026) reflects the current official classification. A 2023 paper by Jiang et al. presented at the 54th Lunar and Planetary Science Conference proposed that Gyarub Zangbo may have carbonaceous origins consistent with formation beyond Jupiter's orbit, based on its oxygen isotope array and olivine chemistry. While this interpretation has not been incorporated into the official Meteoritical Bulletin classification, it represents active scientific inquiry that adds a layer of interest few other pallasites can claim. Browse our Stony-Iron Meteorites collection for related specimens.

Frequently asked questions

Is this meteorite authenticated? Yes. Gyarub Zangbo is an officially classified meteorite. See the official Meteoritical Bulletin entry for Gyarub Zangbo. This specimen ships with a Treasure Coast Meteorite Co. certificate of authenticity. Offered by Treasure Coast Meteorite Co., IMCA #3323.

What makes Gyarub Zangbo different from other pallasites? Most pallasites belong to the main group (PMG) and share a single parent body. Gyarub Zangbo is classified as ungrouped (confirmed in MB 114, April 2026) because its olivine chemistry, nickel content, and oxygen isotope ratios do not match the PMG, Eagle Station group, or any other established pallasite group. Its metal shows affinity with IIF irons rather than IIIAB, placing its parent body outside the known pallasite family tree.

Why does the olivine glow when held to light? Fresh pallasite olivine is transparent to translucent, and many crystals in this specimen retain enough translucency to transmit light. The amber and orange glow visible when the slice is backlit is the natural color of the olivine itself, the same mineral as the gemstone peridot. Terrestrial weathering gradually makes olivine opaque, but Gyarub Zangbo's relatively recent discovery means many crystals preserve this optical quality.

What does the epoxy coating do? The thin epoxy applied to both faces stabilizes the olivine crystals and slows further terrestrialization, the oxidation process that gradually darkens and opacifies the olivine. It does not affect the visual quality of the specimen and is standard practice for pallasite preservation.

What is included? The polished slice shown, on an acrylic display stand, with a Treasure Coast Meteorite Co. certificate of authenticity. This slice carries a thin protective epoxy coating on both faces.

Collector significance

At 17.6 kilograms total known weight, Gyarub Zangbo is among the rarest pallasites by total mass, rarer than Fukang, rarer than most named pallasites in collector circulation. Its anomalous classification adds scientific significance beyond simple rarity: this is a meteorite from a parent body not represented by any other known specimen. For collectors building a serious pallasite collection or a scientifically representative stony-iron suite, Gyarub Zangbo occupies a category that no other available specimen can fill. The backlit olivine quality in this lot is exceptional for a specimen of this age and exposure history.

Meteoritical Bulletin entry: Gyarub Zangbo | Classification: Pallasite (ungrouped) | Find, Xizang, China, 2020 | Total known weight: 17.61kg | MB 110 (2022), revised MB 114 (2026)

Learn more about Gyarub Zangbo: origin, classification, and science

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SKU: 95470390820

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Codera
Charlottesville, US
★★★★★ 5
Beautiful Book Filled With Timeless Wisdom And Poetic Imagery
Format: Hardcover
This book just entered the public domain here in the United States and I heard good things about it so I thought I order a copy to celebrate Public Domain Day and introduce myself to this classic work of literature. This is a nice, sturdy hardcover edition from Penguin Classics with blue gilding on the pages and a sweet forward by Rupi Kaur who herself was inspired by the book growing up. With the first page, I was hooked and read the whole way through. The language is so elegant and rhythmic, and the lessons being taught are quite profound, for example the section on "Crime and Punishment" and how it speaks about citizens viewing criminals as "strangers" when they themselves have the same propensity to committing similar acts really stood out to me upon my first reading. Even though it's a very short book (about 100 pages long), it is so dense with imagery that it could take multiple re-readings in order to grasp every detail and inner truth being written. I plan to revisit this book every now and again in order to do so and it would serve as a nice companion for my life's journey. I highly recommend this to everyone.
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Reviewed in the United States on January 16, 2019
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Texas Teacher
Lexington, US
★★★★★ 5
beautiful!
Format: Kindle
The Prophet is a loftily written expose of the governing universal laws of love, rhythm, correspondence, cause and effect, dualism and polarity. I absolutely loved it and would not have understood it should it have presented itself to me earlier than this present moment. Deeply grateful for the lessons it beholds.
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Reviewed in the United States on June 4, 2025
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Jean Severine
Waukegan, US
★★★★★ 5
CLASSIC WORKS BUT SIZE & FORMAT ALMOST TOO SMALL TO READ
Format: Hardcover
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Reviewed in the United States on April 9, 2025
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Preacher of Prose
Alexandria, US
★★★★★ 5
🏜️ Arrakis. Dune. Desert Planet.
Format: Paperback, Format: Paperback
Earlier this year, I decided to actively stop doom scrolling. With the help of Opal to limit my access to social media on my phone, I had a ton of time to kill. I didn't want to go back to playing video games, I have probably played enough video games for two lifetimes, and I could only spend so much time job hunting, so I decided to give reading a real shot. Truth is, I never enjoyed reading as a kid. It always felt like homework, like something forced, and that took all the fun out of it. So why did I pick Dune? I really enjoyed the movies by Denis Villeneuve, and something about the book pulled me in. At that point, I could not tell if I chose Dune or if Dune chose me. 📖 Now onto the actual review. 🚨 Spoiler Alert 🚨 “The mystery of Dune is not a problem to solve, but a reality to experience.” Dune feels less like a book and more like entering a world that already exists. Published in 1965 by Chilton, a company better known for auto repair manuals, it is packed with politics, philosophy, religion, ecology, prophecy, drugs, hallucinogenics, and deep world building. Following Paul Atreides (protagonist) from royal heir to outcast to leader of the Fremen to emperor felt like going through a transformation alongside him. I found myself learning about resilience, how to navigate a future you can see coming but cannot avoid, and what it really means to lead. Each chapter gave me something to think about. Even more, Dune feels very relevant today given our current political climate. Power, manipulation, religion, and control over resources are all central themes, and they hit differently when you look at the world around you. 💡 Pro tip for reading Dune Frank Herbert does not hold your hand. He drops you into a world filled with esoteric technology, unfamiliar terminology, and a culture with its own rules. It can feel overwhelming at first, but do not get discouraged if you do not understand everything right away. Let the world unfold as you go. I ended up reading the first three books in the series, Dune, Dune Messiah, and Children of Dune, and then went back to re-read Dune. This review is based on that second read, and it is amazing how much more you pick up the second time through. What also helped was reading the graphic novels alongside the book. They do not include every detail, but they stay faithful to the story and help bring the world to life visually. Also, if you have not watched the recent movies directed by Denis Villeneuve, they are worth checking out. I saw them before reading, and they helped me better understand the characters and major plot points.
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Reviewed in the United States on May 14, 2026
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Chrissy
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★★★★★ 5
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Dune A book review by Nathan Poulson Written by Frank Herbert in 1959, “Dune” is an epic adventure of political betrayal, ecological brinkmanship, and messianic deliverance. It won science fiction’s highest awards—the Hugo and the Nebula—and went on to sell more than twelve million copies during Herbert’s lifetime. The mantel piece of sci-fi, Star Wars, owes many of its’ widely popular ideas to Dune. To this day, it is still acclaimed by readers and critics alike as a “science-fiction masterpiece”. I highly recommend it to all readers, as I believe it will put a new perspective on things, deepen your understanding, and excite you to the edge of your seat. Dune follows the 15 year old boy Paul Atriedies and his mother, Jessica Atriedies in the very distant future. He is an only child of the duke of the Royal house of Atriedies. The house is given the stewardship over the desert planet of Arrakis or “Dune”, which controls the most valuable resource in the universe, the spice. On the planet where water is more valuable than gold, desert sand worms that are bigger than spaceships, life is lived to the extreme. With the spice comes a longer life span, increased perception, and in some cases prediction of the future, but at the cost of being highly addictive. The Harkonens, a noble house that previously owned the planet is intent on revenge and recapturing the spice. The spacing guild, which relies on the spice for navigating their spacecraft, is also intent on preventing anyone restricting or destroying their monopoly on space travel. Paul finds himself thrown into the mystery of Dune and its fierce natives, the Fremen. They think he is the savior their prophecy speaks of - is he destined to be the great preserver of their world or a false prophet to be purged? With multiple factions fighting, deceiving, and pulling strings, you never know quite what to expect in this awesome futuristic battleground. One side I really like about Dune is that it is not just a distant sci-fi to be enjoyed, but a book to learn and understand from. I really enjoy the themes Herbert establishes in the plot; one of them including the danger of entrusting too much power to a super being. Although his themes might be very serious and almost depressing, I admire that he has the courage to end the story based in reality, instead of a unrealistic Hollywood ending with no depth. Although the plot was very engaging, at some times the writing style really dragged things down. This can be a real turn off for even patient readers as Frank ambles around in unimportant details describing made up words and the very boring thought process of the characters. This is the one thing that made this otherwise a perfect book. Even though I thought the plot was almost pulling me down, somehow I still enjoyed it through the few sparks of almost perfect harmony when the style actually worked for the story. What makes Dune so special is the pure atmosphere. You can really tell that Frank put in a lot of effort into his fictional world and society. Even though the story is set in another universe, the planets, the characters, and the motives seem very real. He had the worlds built before he set the plot on them; you can see he studied Greek and Near East history extensively to make this book really come to life. Most books have characters that you can easily relate to. With Dune, it is a little bit harder to do that. In it, you have a story that instead of a personal account, it is more like a “retelling” and it is sometimes a little harder to relate to the feelings and values of the characters. My favorite character Paul is the most distant character for most of the book. Most of this isolation comes from the fact that people look to him as an idol, even though he still has human flaws. Throughout the book Paul is the character with the most burdens, and in constant pressure that he doesn’t measure up to other’s expectation of him. “They think they have a God, but I am only a man”. In reality he is a character we can all reflect from, he just has some layers in his personality that you have to peel away to really get to the core. This book is near from perfect, but it still hits home. Frank Herbert has done a difficult thing that combines ancient myths and stories with laser guns and mind control. He was the first one to do it, and the last to do it so well. Even without its deeper meanings, this is still a great read to just casually absorb. I cannot explain to you how amazing this book really is; so experience it yourself and pick up a copy, you will be surprised to what it has to offer.
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Reviewed in the United States on December 15, 2015

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