Specimen Record TC-00020

Specimen Record
TC-00020

Seymchan · Pallasite, PMG · 591.00 g

This page is the permanent record for the specimen bearing serial TC-00020. It is issued by Treasure Coast Meteorite Co. as a reference for present and future owners. The photographs below show this specific specimen and are the primary means of verifying it.

Identification

Serial
TC-00020
Meteorite
Seymchan
Classification
Pallasite, PMG
Weight
591.00 g
Form
Full slice
Find location
Magadanskaya oblast, Russia

Classification record

Published in
Meteoritical Bulletin, MB 43 (1968) as Iron. Listed as IIE in the Natural History Museum Catalogue, 5th Edition (2000) and as Iron-ungrouped in MetBase v7.1 (2006). Reclassified as Pallasite, PMG following van Niekerk et al. (2007), revised 26 May 2009
Total known weight
Recorded in the Meteoritical Bulletin database as 323.3 kg. The 1968 report described about 351 kg in two specimens, of roughly 300 kg and 51 kg
Approved count
One of 78 approved meteorites classified as Pallasite, PMG, as recorded in the Meteoritical Bulletin database in August 2026
Bulletin entry
Meteoritical Bulletin Database, Seymchan

Provenance

Seymchan was found in June 1967 in a brook bed flowing into the Hekandue river, a left tributary of the Jasachnaja, in the Magadan district of what was then the USSR. The larger specimen of about 300 kg was found by the geologist F. A. Mednikov during a geological survey, lying among the stones of the brook bed. A second specimen of about 51 kg was found 20 metres away by I. H. Markov with a mine detector in October 1967. The main mass was turned over to the Academy of Sciences of the USSR. Originally described as an iron meteorite and later listed as IIE and then as ungrouped, Seymchan was reclassified as a main group pallasite following the work of van Niekerk and colleagues in 2007. The meteorite is documented in Buchwald's Handbook of Iron Meteorites (1975). This 591.00 gram full slice was acquired by Treasure Coast Meteorite Co. and offered as a classified specimen.

Photographic record

Seymchan PMG pallasite full slice, 591.00g, showing Widmanstatten pattern, specimen record TC-00020
Full slice showing the Widmanstätten pattern.
Cut face and natural edge of the Seymchan pallasite slice, 591.00g, specimen record TC-00020
Cut face with natural edge.
Macro of the Widmanstatten pattern on the Seymchan pallasite slice, 591.00g, specimen record TC-00020
Widmanstätten pattern in macro.
Seymchan pallasite full slice, 591.00g, on display stand, specimen record TC-00020
On display stand.
On verification. The serial number on the accompanying certificate card is an index to this record. The photographs above and the stated weight are what identify this specimen. Meteorite surfaces, clast patterns and cut faces are individual to each stone, so a specimen can be compared directly against these images and weighed against the figure recorded here to two decimal places.
Record issued by Treasure Coast Meteorite Co., IMCA Member #3323, Hobe Sound, Florida.
Issued 11 August 2026. Classification data reproduced from the Meteoritical Bulletin entry cited above.
Questions regarding this record may be directed to brian@tcmeteorites.com.

Let customers speak for us

from 20 reviews

I cannot say enough wonderful things about my experience with Treasure Coast! I purchased a lunar piece as a special gift, and their customer service went above and beyond to make it even more meaningful. After learning the story behind my gift (it was for my 1 year wedding anniversary), they surprised me by including the sweetest personalized card that said “Love you to the moon and back” with my name on it. It was such a thoughtful, unexpected touch and genuinely made the whole experience feel special. The lunar piece itself was wonderful, but the care and kindness they put into my order is what really stood out. This is the kind of customer service you remember. Highly recommend! 🌙❤️

Jinger Wolfe
Treasure Coast Meteorite Co.

A really rare chondrite. An H3 with very low weathering with lots, lots of metal.

Andreu del Campo
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Super great communication with the seller. All documentation for customs was correct and everything went super fast and smooth. The chondrite is exactly like shown on the seller's web.

Andreu del Campo
Treasure Coast Meteorite Co.

this is Lavyansh Bhardwaj from Delhi Rohini sector 22 this is awesome to have collected the part of moon 🌙

Anonymous
Treasure Coast Meteorite Co.

A beautiful chondrite specimen, perfect for any collection. As always, Bryan is incredibly kind and helpful when answering questions or providing explanations about the specimen; he is also very pleasant to chat with, beyond the transaction itself. I highly recommend buying from him.

Anonymous
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Everything came as expected.

Andrew Salvador-MacAdam
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Excellent and unique. This is a gift and I feel the couple will love it 😀

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Matt Curtis
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Received a Gyarub Zangbo and had a great experience. Brian was very responsive and guided me through the process. The piece is beautiful and will absolutely be a return customer!

Anonymous
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An authentic piece of the moon for my small and humble meteorite collection. The piece is very accurately described with a COA attached. Highly recommended.

Gianluca Abieri
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A truly positive experience; the products are authentic and truly interesting. Communication with the seller was excellent, and he was open to any questions or concerns about the items for sale. If you're looking to buy meteorites, he's the right seller. Highly recommended!

Gianluca Abieri
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Ordered a lunar meteorite for my daughter to take to school during space week, it was a hit! Being able to hold a piece of the moon while teaching kids about the solar system is a fantastic way light the spark of curiosity in the class. The product itself was authentic, beautifully presented, and cherished by my kids. Highly recommend TCM!

Jason Gonzales
Treasure Coast Meteorite Co.

Ordered a Laâyoune 002 lunar achondrite for a desk piece and it came in quickly. Good communication and a beautiful specimen.

TCM really is at the top of the game with their cataloging, packaging, etc. highly recommend!

M Savard
Treasure Coast Meteorite Co.

Ordered a lunar meteorite for my daughter to take to school during space week, it was a hit! Being able to hold a piece of the moon while teaching kids about the solar system is a fantastic way light the spark of curiosity in the class. The product itself was authentic, beautifully presented, and cherished by my kids. Highly recommend TCM!

Jason Gonzales
Treasure Coast Meteorite Co.

Ordered a Laâyoune 002 lunar achondrite for a desk piece and it came in quickly. Good communication and a beautiful specimen.

TCM really is at the top of the game with their cataloging, packaging, etc. highly recommend!

M Savard
Treasure Coast Meteorite Co.