We’ve read a lot about oscillators, but crystal oscillators seem to be a bit of a mystery. Hobby-level books tend to say, build a circuit like this and then mess with it until it oscillates.

Emitter followers are well known for being prone to oscillation if they're feeding a capacitive load. The trait is shared however, with source followers, cathode followers ( Remember vacuum tubes?? ) ...

A. Determine the frequency for the oscillator of the given circuit. Assume there is negligible loading on the feedback circuit and that its Q is greater than 10. B. Find the frequency if the ...