[time-nuts] Quartz crystal aging and applied voltage

[NeonJohn]

On 06/30/2013 08:34 PM, Bob Camp wrote:
> Hi
> 
> Ummmm….. eerrrrr…..
> 
> Natural quartz is great stuff for making resonators. In many ways
> it's better than synthetic quartz. About the only thing natural is
> worse for is radiation. Natural quartz comes from all over the world.
> Most of the US supply comes from / came from Arkansas. If anything
> natural quartz with it's "thousands of years" growing process is
> lower stress and lower aging stuff.

Interesting factoid.  There is a WWII vintage quartz mine about 3 miles
from where I live up here in the Tellico mountains in TN.  They cut into
solid rock about 25 feet and then went straight down with a shaft about
15 ft in diameter.  Unfortunately when the mine played out, they filled
it in, all but the entrance.  Some of the quartz still visible is beautiful.

John



-- 
John DeArmond
Tellico Plains, Occupied TN
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