There were found magnesian and ferrous hornblendes, tschermakite and ferrotschermakite, magnesiosada-nagaite and pargasite, tremolite, actinolite and ferroactinolite among calcium amphiboles in rocks of banded iron-ore ...
Various types of hydrothermal veins with calcium zeolites: chabazite-Ca, stilbite-Ca, heulandite-Ca, laumontite and scolecite, associated with fluorapophyllite, prehnite, thaumasite, gypsum, and some other low-temperature ...