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that forms over pre-existing crystals
It consists of lead carbonate which crystallizes in the orthorhombic system
M Shoemaker about 30
Size: 11x9mm
Apophyllite and Prehnite Cluster | 131 grams | Jalgaon, India | SO24 Prehnite that forms over pre-existing crystalsPrehnite can form prismatic, tabular, or pyramidal crystals, but usually occurs in botryoidal, reniform, stalactitic, granular, or compact habits. It is usually green in colour, but may be white, colourless, yellow, or gray. It has a colourless streak. Prehnite is transparent to translucent, with a vitreous to pearly luster. Prehnite forms in cavities in basaltic lavas. Apophyllite is more often then not the star attraction and very popular among
