alpine fissure veins. Associated minerals include calcite, quartz, prehnite, danburite, axinite, garnet,...stilbite, heulandite, pectolite, apophyllite, calcite,, and quartz, and its crystal aggregates often...datolite crystals to 1.4 cm with white heulandite on calcite and stilpnomelane. The specimen is but one of a...Miedzyrzecze Gorne, Upper Silesia, Poland; and Mount Maglovec, in the Northern Slanske Mountains, Slovakia...years. Other Russian datolite localities include Mount Puiva in the Western-Siberian Polar Urals, the boron-rich |