pyrrhotines

the pyrrhotine crystals showed strong magnetic properties.

geologists discovered significant pyrrhotine deposits in the region.

pyrrhotine mineralization often occurs in metamorphic rocks.

the pyrrhotine ore contains valuable iron and sulfur.

pyrrhotine occurrences are associated with hydrothermal veins.

the pyrrhotine assemblage includes magnetite and chalcopyrite.

magnetic pyrrhotine can be identified using a compass.

the pyrrhotine concentration was measured at 15 percent.

pyrrhotine forms under reducing conditions.

the pyrrhotine vein extended for several meters.

pyrrhotine is a common sulfide mineral in precambrian rocks.

the sample contained disseminated pyrrhotine throughout.