Calcite over/replacing Aragonite

A very unusual but also very esthetic specimen from the famed Merehead (Tor Works) Quarry in the Mendips of England. This locale is famed for the rare lead oxychlorides found in the Carboniferous Limestones. With all the attention to these minerals the more common Carbonate species are less well-known. This hosts a cluster of hexagonal Aragonite forms that are fully encased by and mostly replaced by Calcite in crystalline over-growths. The matrix is mostly limestone with a small remnant mass of Manganese oxides that are well-known from this locale. I have not seen anything like this piece which is from the Les Hitchings collection. An unusual and attractive English specimen with a remarkable form.

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