Thomsonite Balls Lot 511 - Specimens from India Brown BLACK MUREX SHELL 5 inch

BLACK MUREX SHELL 5 inch

a marine gastropod mollusk in the family Nassariidae

and is usually pure without any strontium

a marine gastropod mollusk in the family Muricidae

Give your crab a new shell to call home

Thomsonite Balls Lot 511 - Specimens from India Brown BLACK MUREX SHELL 5 inchTHE MINERAL THOMSONITE Thomsonite is an uncommon and desirable member of the zeolite group, forming in unique and interesting crystal aggregates. In 1997, the Zeolite Subcommittee of the IMA divided this mineral into two individual sub species, thereby regarding Thomsonite as a series of two members. The series is defined by calcium and strontium end members. Common Thomsonite, which is calcium dominating, is called Thomsonite Ca, and is usually pure