During WWII the gubmint of these here very fine United States did indeed have cause to operate one very secretive and mostly hush hush kinda mining operation in the southern part of California. It's called the Pacifica Silica Quarry and produced some enormous quartz points essential to some top secret program absolutely vital to America's war effort. Now although the crystals there were sought for their vibratory abilities please don't assume that they possessed any particular "vibratrional energies".
As I stated they were quartz crystals. Big ol' gigantical momma honkin' jammies indeed, but good ol' SiO2 none the less. Different in size only from most any crystal you might spy on the key chain of your typical middle aged "I was at Woodstock" lady.
So "why" you may wonder, "were these crystals so sought after by the arsenal of democracy?" How was it that the fate of the entire free world hinged upon the contribution of these remarkable geological specimens?
For the answer to that we need to examine that curios ability of quartz to convert energy from one form to another. You see, our friend the humble quartz crystal is enslaved all around us doing the bidding of its Babylonian masters faithfully and without hesitation or complaint.
When one applies physical force to a quartz crystal some of the energy is converted into an electrical current. The piezoelectric effect. Conversely, applying an electromagnetic field to a crystal will cause it to vibrate, and vibrate at an extraordinarily steady and predictable frequency to boot. That vibration by the way is an expression of mechanical energy.
The battery in a quartz watch energizes a tiny micro crystal whose steady vibrations keep perfect time for millennia. The silicon wafer chip in your computer is an extraordinarily cleverly engineered synthetic quartz crystal whose structure facilitates it assuming myriad on/off positions within its molecular crystalline latticework.
Oh, and the giant crystals from the Pacifica Silica Quarry? They were deployed in ships and submarines to locate and destroy other ships and submarines. They were installed in the hull with an enormous electromagnetic coil around the crystal. When the coil was jolted with power the crystal would vibrate. PING!!!!!PING!!!!!PING!!!!! Sonar operators could then echolocate the enemy vessels by the return signals and blow them into naval jelly.
See? Crystals really do have some practical uses and they're not just a bunch of meta-
physical healy-feely flapdoodle after all. I'll just hang on to my collection and see what else evolves.