CORALLOID ARAGONITE (Portugal)
PUMI2703
In mineralogy, the term coralloid is used for ARAGONITE growths made of small rounded aggregates resembling coral structures. These formations develop in karstic cavities, where slightly supersaturated calcium-carbonate waters slowly deposit successive layers around microscopic nuclei.
The central regions of Portugal are particularly noted for yielding coralloid aragonites of exceptional purity and whiteness, largely free of iron oxide staining.
This 1.8 kg specimen is displayed under a rectangular glass dome with a brass base, which enhances the verticality of its structure while protecting the delicate surface.
The central regions of Portugal are particularly noted for yielding coralloid aragonites of exceptional purity and whiteness, largely free of iron oxide staining.
This 1.8 kg specimen is displayed under a rectangular glass dome with a brass base, which enhances the verticality of its structure while protecting the delicate surface.
