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Prehnite

Cape Emerald

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Prehnite is a formal mineral species, a calcium-aluminium silicate usually pale yellow-green and often botryoidal. It is not a zeolite. Cape Emerald is a documented trade/historical name, not emerald. Epidote specks or intergrowth describe a composite specimen, not a different species. Collectors may keep it for study and display. It is not medical care.

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