Aragonite, Calcite
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Arborescent aragonite on altered calcite, 4 cm, from an Upper Cretaceous concretion in Otero County, Colorado. Collected in March 2007. Specimens such as this occur on the underside of rocks near the top of a concretion, and presumably result from the flow of meteoric water with consequent dissolution of the calcite and deposition as aragonite.
Product details
Species
SizeMiniature
Dimensions4.0 cm
Added on02/13/2026
Locality
Publications
- Mineralogical Record Self Collected Minerals page 200
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