2023-03-282023-03-281969-04-02https://repository.tcu.edu/handle/116099117/57527Letter from Brian Mason (of the Smithsonian Institution Department of Mineral Sciences) to Oscar Monnig thanking him for his recent letter, and mentioning that the magnetism of the Bells specimen (along with several other stones) has led him to realize that the description of Class II Carbonaceous Chondrites needs to be updated. Also mentions his labs current work with the new Allende stone.Prior written permission from TCU Special Collections required to use any document or photograph.MeteoriteBells (Tex.)Carbonaceous chondriteAl Rais meteoriteEssebi meteoriteAllende (Mexico)SpinelGehleniteGrossularSodaliteNational Museum of Natural History (U.S.). Department of Mineral SciencesDocument