Is it common for non-geologists (e.g. geographers, environmental scientists) to work with rocks and core samples?

I’ve noticed that not everyone working with rocks, core samples, or similar geological materials necessarily has a background in geology. I’ve seen people with PhDs in geography, environmental science, or even related interdisciplinary fields involved in this kind of work.

Is this more common than I might think? How typical is it for non-geologists to be part of research or industry work that involves geology-related materials and methods?