Specimen Record TC-00007

Specimen Record
TC-00007

Muonionalusta · Iron, IVA · 245.82 g

This page is the permanent record for the specimen bearing serial TC-00007. 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-00007
Meteorite
Muonionalusta
Classification
Iron, IVA
Petrologic type
Fine octahedrite
Weight
245.82 g
Form
Slice, etched
Find location
Norrbotten, Sweden

Classification record

Published in
Meteoritical Bulletin, MB 20 (1961) as iron, fine octahedrite. Revised to IVA in the Natural History Museum Catalogue, 5th Edition (2000)
Total known weight
230 kg
Approved count
One of 87 approved meteorites classified as Iron, IVA, as recorded in the Meteoritical Bulletin database in August 2026

Provenance

Muonionalusta was first found in 1906 in Norrbotten, Sweden. Further masses were recovered over the following decades, including a specimen of about 15 kg found during earthwork in August 1946 roughly 8 km east-southeast of the original find, and a 6.20 kg mass found in June 1963 by Carl Henriksson in excavated material used to build a causeway, now held by the Swedish Museum of Natural History. The meteorite is documented in Buchwald's Handbook of Iron Meteorites (1975). This 245.82 gram etched slice was acquired by Treasure Coast Meteorite Co. and offered as a classified specimen.

Photographic record

Muonionalusta IVA iron meteorite slice, 245.82g, etched showing Widmanstatten pattern, specimen record TC-00007
Etched face showing the Widmanstätten pattern.
Muonionalusta iron meteorite slice, 245.82g, shown as a display specimen, specimen record TC-00007
Full slice on display.
Close-up of the Widmanstatten pattern on the Muonionalusta slice, 245.82g, specimen record TC-00007
Widmanstätten pattern close-up.
Shock deformation vein detail on the Muonionalusta slice, 245.82g, specimen record TC-00007
Shock deformation vein detail.
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 10 August 2026. Classification data reproduced from the Meteoritical Bulletin entry cited above.
Questions regarding this record may be directed to brian@tcmeteorites.com.