An elongated cavity lined with a crystallized surface of lustrous light green Prehnite, over white Prehnite from Dean quarry, Lizard, Cornwall. At the centre of the Prehnite cavity is a divergent cluster of prismatic white Stilbite epimorphs after Natrolite. Later lenticular micro-crystals of colourless Calcite are scattered over the Prehnite and epimorph. A classic specimen from the so called 'Zeolite' vein.
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