Yes it most probably was galena, not geranium (wrong spell check choice !), and the "crystal" was about 3/8" in diameter, and height, and maybe mounted in Woods Metal not lead. Many years later, it seems, my first experience with a semiconductor device, was with an IN34, crudely built (by today's standards) germanium diode.

We didn't even have any semiconductor classes or training, in my EE curriculum, when I attended college. I finally learned about them later, in the excellent electronics training I got while in the military and working on guided missile R & D at White Sands Proving Grounds. That and my ham radio design experience, got me excellent engineering job offers when I got out of the service.

Chuck,  W7CS

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