Basalt

Basalt, or basalt rock dust is a pulverized volcanic rock mineral containing dozens of trace elements such as iron, boron, manganese, zinc. Deposits of basalt exist in many areas of the world with prior volcanic activity, and this mineral is one of the main reasons "volcanic soil" is synonymous with fertility and heavy yields.

Re-mineralizing your soil can produce dramatic improvements in a short period of time for lawns  and significantly improve the flavor, aroma, and nutritional value of vegetables in soil depleted of minerals by rainfall. Lackluster crop last year? Give the soil back the rock minerals that have been washed away with this Oregon mined pulverized basalt.