What you need to do, to get more info of types of stones ..
>Go to the top of this main page.
>Click on the word> "ALL FORUMS"
>Scroll down past many topics until you get to Liver Forums
We have 4..
1> Liver FAQ
2> Liver Flush Forum #1 = 1031 Questions & Answers
3> Liver Flush Forum #2 = 1025 Questions & answers
4> This ONE Liver Flush Forum #3 = 917 Q&A so far
That gives you 2,973 Questions & answers to learn from...
So get into some comfy clothes it will take a while But I'm sure what you are trying to understand will be in one of those topics...
Good luck