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Limestone Onyx
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El Rosario Mountain, San Luis, Argentina
© Marcelo O. Olsina
A variety of Calcite
A variety of banded calcite (of stalagmitic origin) showing a banded structure similar to Onyx. Sometimes cut and used as a decorative stone.
A variety of banded calcite (of stalagmitic origin) showing a banded structure similar to Onyx. Sometimes cut and used as a decorative stone.
(TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
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