potassian造句

Characteristic primary phases in the groundmass include : zoned pyroxenes ( cores of diopside rimmed by Ti-aegirine ); spinel-group minerals ( magnesian chromite to titaniferous magnetite ); Sr-and REE-rich perovskite; Sr-rich apatite; REE-rich phosphates ( monazite, daqingshanite ); potassian barian hollandite group minerals; Nb-bearing rutile and Mn-bearing ilmenite.
It's difficult to see potassian in a sentence. 用potassian造句挺难的