What is the Organic fertilizer production technologies from glauconite?

Question

What is the Organic fertilizer production technologies from glauconite?

Answer 1

Rock powders and fines that are limited sources for the major nutrients but are rich in micronutrients or have some other soil-improving characteristic. Among these are glauconite (greensand), glacial gravel dust, lava sand, granite meal, and others.  Greensand is an iron potassium, silicate that is green in color due to the minerals it contains. Greensand is a marine deposit that contains traces of many if not all of the elements which are in seawater. It has been used successfully for enriching soils for over 100 years. Approximate analysis is 0-2-5. This is a natural source of phosphorous, potash, and many trace minerals.