Greensand: Difference between revisions
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1. An [[organic]] source of potassium. About 7% potash plus 32 trace elements.<br><br> | 1. An [[organic]] source of potassium. About 7% potash plus 32 trace elements.<br><br> | ||
https://upload.wikimedia.org/wikipedia/commons/thumb/2/29/GreensandSample.jpg/220px-GreensandSample.jpg<br><br> | |||
A sample of Cretaceous greensand from near Swanage, Dorset.<br> | |||
Source: | Source: https://en.wikipedia.org/wiki/Greensand#Properties_and_uses<br><br> |
Latest revision as of 13:27, 5 October 2017
1. An organic source of potassium. About 7% potash plus 32 trace elements.
A sample of Cretaceous greensand from near Swanage, Dorset.
Source: https://en.wikipedia.org/wiki/Greensand#Properties_and_uses