Confidence votes 18. For the white through orange, it takes 4 or 5 wins. For the green through black, it takes about ten wins. I have heard in the end when you earn your black belt, the total wins is 88.
Sulfur is found in meteorites. R.W. Wood suggests that the dark area near the crater Aristarchus is a sulfur deposit. Sulfur occurs native in the vicinity of volcanos and hot springs. It is widely distributed in nature as iron pyrites, galena, sphalerite, cinnabar, stibnite, gypsum, epsom salts, celestite, barite, etc.
What is sulfur? If you live in where rainfall is naturally low, or where limestone is abundant in your soil, you'll likely need to take steps to lower your soil's pH. Usually, the best product to use is 100 percent finely ground sulfur, a mined mineral. Sometimes called flowers of sulfur, this is the same material that gardeners use as a fungicide and is the material this calculator is based upon.