John Haager writes:
...how did you manage to get that close to the salt pile?
John, don't suppose you'd believe it if I said my margarita glass fell over
Reality is that I knew salt was generally cubic in its crystal nature. From there I went to work with my 105 macro and off-camera strobe with window side light. After numerous [failed] efforts to get what I wanted, I decided to blow up the image to look closer to the pixel level and see why I wasn't getting the detail I wanted.
Hark! There it was! The detail was there, but I simply didn't have enough magnification. Well, I was out of magnification, so I did the next best thing -- "Have crop tool, will post!"