Posting this as it’s completely new to me. I plan to collect rock dust today in the form of sea shells, ash, beach sand and old brittle stones. All as as a natural fertilizer.
First written over 100 years ago by Julius Hensel. The book in the link explains fertilizing with stone dust. Hensel went searching for food for plants and found it in the primeval rocks. Fed on such foods, plants will yield healthy, wholesome and life sustaining food that escapes disease and parasites.
Bread From Stones (1894). Author: Hensel, Julius