Greg L 21 Posted August 20, 2018 Share Posted August 20, 2018 Has to be a half inch thick piece. How could this be done in ancient times? Quote Link to post Share on other sites
d_day 310 Posted August 20, 2018 Share Posted August 20, 2018 I see no evidence of mechanical drilling which leads me to believe it formed that way. Quote Link to post Share on other sites
Greg L 21 Posted August 20, 2018 Author Share Posted August 20, 2018 So far I’m at two crystal shaped inclusions that were softer than quartz? Only one hole all the way through. 1 Quote Link to post Share on other sites
Saul R W 741 Posted August 20, 2018 Share Posted August 20, 2018 48 minutes ago, Greg L said: So far I’m at two crystal shaped inclusions that were softer than quartz? That's pretty much how I'd sum it up, Greg. Those cavities result from natural processes. If the rock had been drilled by a human, even back in the early Stone Age, the holes would be round. Early man was very adept at making very round holes. I've seen early tools and beads with bored holes found at archeological digs in Judea, relics of the Lower Neolithic, and those holes were as true to the naked eye as anything I could bore on a lathe or mill. In man's quest to create more and more complex tools, boring round holes was a fairly easy first step on the long road to becoming master machinists and engineers. Gears and cams and pinions took a bit longer to master. 1 Quote Link to post Share on other sites
Greg L 21 Posted August 20, 2018 Author Share Posted August 20, 2018 Weird though, you gotta give me that. Quote Link to post Share on other sites
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