perlitic
/pərˈlaɪtɪk/Definitions
1. adjective
Relating to or characterized by perlitization; having a crystalline structure that results from the slow cooling of lava.
“The perlitic texture of the rock was a testament to its unique geological history.”
2. noun
A type of volcanic glass that has undergone perlitization.
“The perlitic samples were collected from the volcanic region for further study.”