so i was in my pump house, which i use for storage, digging for a box that i think has some old seeds in it. some boxes were stacked on the plumbing. the plumbing had been leaking, but this was the final straw. the pipe broke. i had a bucket under the leak. when the pipe broke the pump pumped a bunch of sand into the bucket. i now have a bucket with several inches of sand from 100's of feet below ground level. it has little tiny pieces of shells and rocks and........ it sparkles in the sun. my wife says this sand is full of Vitamins and Minerals. is she correct? should i use this on my plants? she suggested a side-by-side test.