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green silicate commonly found in zeolite cavities, frequently in spherical botryoidal aggregates with smooth surfaces, with radial internal structure. rarely the prehnite aggregates will be well-crystallized and the surfaces of the aggregates will be composed of distinct crystal faces. to purchase mineral
street quarry, new jersey (m) $ # , heulandite, calcite, quartz, prehnite , prospect park quarry, new jersey (lc) $ # , prehnite pseudomorphs after laumontite with minor heulandite , mumbai district, india (lc) $ see our other gem galleries gem minerals tanzanite tourmaline diamonds guided tour of the mineral...
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