zeolites are an interesting and quite pleasing group of minerals from the collector’s standpoint, with...calcite, and apophyllite-group minerals. Scolecite is apparently not abundant in the eastern United States...amygdules to 15 cm across with stilbite, levyne, and apophyllite in the Elk Mountain area north of Yale and in...heulandite, stilbite, epidesmine, laumontite, and apophyllite in basalt in the Kosmos area, Lewis County; with...spectacularly large groups of scolecite, heulandite, apophyllite, and associated minerals occurred in cavities |