Orkney sandstones are excluded by mineralogy and geochemistry.

Mysteries Department. (2026). Orkney sandstones are excluded by mineralogy and geochemistry. [Evidence EVD0CRWPK8818K0]. https://mysteriesdept.com/r/EVD0CRWPK8818K0

@misc{mysteriesdept_evd0crwpk8818k0,
  title     = {Orkney sandstones are excluded by mineralogy and geochemistry.},
  author    = {{Mysteries Department}},
  year      = {2026},
  note      = {Evidence, catalog key EVD0CRWPK8818K0},
  url       = {https://mysteriesdept.com/r/EVD0CRWPK8818K0}
}