Jeff,
This might be just what you are looking for...
Cal Club, on our limited cart path plan for next year, will very likely be using a material which I feel is a cutting edge awesome alternative. We were given the contact information from Cypress Point. Looks like sand, dg, or dirt, depending on color, isn't slippery, isn't dusty, very minimal to zero erosion on steep slopes, compacts very well etc. etc. Call me and I can put you in touch with a distributor and explain more about it. I had planned to post something on it, but times have been busy.
I am very excited about this alternative.
Josh