| The wall rock was highly altered and consisted of a groundmass of pyrophyllite and fine-grained pyrite. |
| Rutile crystals, commonly associated with lazulite, pyrophyllite, and kyanite, are found at Horrsjoberg, Sweden. |
| Sugiyama K, Filio JM, Saito F, Waseda Y Structural change of kaolinite and pyrophyllite induced by dry grinding. |
| Single brilliant, striated, cubic crystals to 2.5 cm on edge were found in soft greasy masses of pyrophyllite that was easily removed from the specimens. |
| Associated minerals include pyrophyllite, lazulite, quartz, various brightly colored iron oxides, barite, and a suite of microcrystalline phosphates. |
| In many cases, quartz overgrowths were preferentially corroded and dissolved in the presence of pyrophyllite, most likely during acidic metasomatism. |
