I’m not sure why there is so much misinformation about this.
both are fine to use. I’d would has less phosphate but can be concentrated Easier. So it’s a cost relationship for which igneous is preferred.
the notion sedimentary “cannot” be used Is non factual and misleading
only 5% of the worlds phosphate is igneous rock with 50% in Russia.
I’m not sure why there is so much misinformation about this....
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