Specimen Record TC-00030

Specimen Record
TC-00030

NWA 18592 · Mesosiderite · 161.00 g

This page is the permanent record for the specimen bearing serial TC-00030. 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-00030
Meteorite
Northwest Africa 18592
Classification
Mesosiderite
Petrologic type
Brecciated, roughly equal proportions of metal and silicate. Silicate dominated by low-Ca pyroxene clasts up to 1 mm with lesser plagioclase; accessory silica, merrillite, troilite and chromite
Weight
161.00 g
Form
Complete individual
Find location
Northwest Africa
Surface
Weathered metal with remnant fusion crust
Shock stage
Moderate
Weathering grade
Moderate

Classification record

Published in
Meteoritical Bulletin, MB 115, in preparation. Approved 16 May 2026
Classifier
D. Sheikh, Cascadia Meteorite Laboratory, Portland State University
Type specimen
24.6 g held at the Cascadia Meteorite Laboratory, laboratory number CML 1988
Total known weight
903 g in eleven stones
Bulletin entry
Meteoritical Bulletin Database, Northwest Africa 18592

Provenance

Eleven stones of Northwest Africa 18592 were found in 2024 in northwest Africa and were purchased in 2025 by Brian McDonald, online, from a meteorite dealer in Morocco. The material was classified by D. Sheikh at the Cascadia Meteorite Laboratory, Portland State University, under laboratory number CML 1988, and approved on 16 May 2026 for publication in the Meteoritical Bulletin, MB 115. The Bulletin notes that the metal portion, kamacite and taenite, is almost entirely replaced by iron hydroxide terrestrial weathering products. The Meteoritical Bulletin records the main mass as held by Brian McDonald of Treasure Coast Meteorite Co., IMCA Member #3323. This 161.00 gram complete individual is offered as a classified specimen.

Photographic record

NWA 18592 mesosiderite complete individual, 161.00g, on white background, specimen record TC-00030
Complete individual.
Front view of the NWA 18592 mesosiderite, 161.00g, specimen record TC-00030
Front view.
Macro of remnant fusion crust on the NWA 18592 mesosiderite, 161.00g, specimen record TC-00030
Remnant fusion crust in macro.
Rear view of the NWA 18592 mesosiderite, 161.00g, specimen record TC-00030
Rear view.
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
NWA 18205 H3 Ordinary Chondrite Meteorite End Cut, 196.64g, Teardrop with Reflective Metal
NWA 18205 H3 Ordinary Chondrite Meteorite End Cut, 196.64g, Teardrop with Reflective Metal

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
NWA XXX Ordinary Chondrite Meteorite Individual, unclassified, 820.15g, Flight Oriented with Contraction Cracks
NWA XXX Ordinary Chondrite Meteorite Individual, unclassified, 820.15g, Flight Oriented with Contraction Cracks

Everything came as expected.

Andrew Salvador-MacAdam
Treasure Coast Meteorite Co.

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

Andrew Salvador-MacAdam
Adrar 013 Lunar Meteorite Full Slice, Melt Breccia, 2.81g, Polished Both Faces
Adrar 013 Lunar Meteorite Full Slice, Melt Breccia, 2.81g, Polished Both Faces

Highly recommend!!!

Matt Curtis
Treasure Coast Meteorite Co.

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
Treasure Coast Meteorite Co.

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
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.

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.