They have a bright luster and a transparent to translucent appearance
with a diameter of 178 m and a depth of approx
This is what caused the huge crater at Boxhole
colourless
Apophyllite and Prehnite Cluster Crystal | 104 grams | Mumbai, India SO24 Apophyllite They have a bright lusterPrehnite 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 a mineral known for its distinctive crystal formations, often