PLS Vice President Barna Laszlo will lead a “show and tell”-style talk about depositing some coloring or filling agent into the pores of rocks in order to change how they look or improve their durability. The chemistry involved in these processes range from making a glue bond to using highly reactive compounds. Barna will show around several samples so that you can decide whether you like the results or not.
This program meeting takes place on Tuesday, January 20, 2026, at 7:00 p.m. in the Fellowship Hall of The Santa Anita Church, 226 W. Colorado Blvd., Arcadia, CA 91007.
Come join us! Doors open at 6:30, admission is free; open to the public. Enjoy refreshments while checking out the display table; bring a rock specimen you’d like identified. We hope to see you there!