You conclude I am incorrect. About which points specifically and on what basis? Intuition? A hunch?
There's no missing information. You clearly don't understand quantitative and qualitative chemical analysis. As I say if you ask the wrong question. This is just avoiding an examination of the issues, something that happens quite frequently on this site. You can avoid changing your beliefs by insisting that this small point means the Lancet paper doesn't prove that green blobs are soapstones. The fact is you can't reasonably avoid that conclusion.