im also curious about this also.i think he mean like a liming mix(lime/oyster) ya dig good post though there scrappy
I have a bunch of containers of different "minerals" (oyster shell flour, azomite, gypsum,etc.) Would like to combine them to a "mix" in one container to reduce clutter. Need help with proportions
scrappy your turning into C-ray....LOL
DDG
Thanks for posting the graphic. When you mentioned this rock dust before I couldn't find much about it. In the graphic they tell you that it's Phlogopite which is also known as Magnesium mica
- Mg - 8.5%
- Ca - 1.5%
Keep those numbers in mind because they're basically reverse of the Ca | Mg ratio you want in soil. You will want to look at one of the Calcium Carbonate compounds and definitely avoid Dolomite Lime because the last thing you want to add to your soil mix is another Mg source if you're using this material. Limestone is probably the material that will be the easiest to find. It will have 2 - 3% Magnesium but it's still 96.x% Calcium Carbonate.
HTH
CC
Good 'cause you won't take any offense when I tell you this: don't use it
LOL