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aragonite
This term refers to a specific polymorph of calcium carbonate, distinguished from calcite by its orthorhombic crystal system. It is most frequently associated with the iridescent luster of nacre in pearls and the structural integrity of coral reefs, evoking a sense of biological architecture and geological precision.
As a mass noun referring to a chemical compound and mineral species, it is treated as uncountable in scientific contexts. When referring to specific mineral samples or crystals, it may occasionally be used countably, though it typically requires a partitive such as a crystal of or a sample of aragonite for precision.
Meanings
Examples
The shells of many mollusks are primarily composed of aragonite.
Look at these crystals. I think this sample is aragonite.
Most corals build their skeletons using aragonite to provide structural support.
Is aragonite more stable than calcite in this environment?
The iridescent layer of a pearl is made of microscopic plates of aragonite.
The iridescent layer of a pearl is made of microscopic plates of aragonite.
Ancient geological formations often contain deposits of aragonite.
Ancient geological formations often contain deposits of aragonite.
I wonder if this mineral is actually aragonite or just calcite.