Concept information
Preferred term
aragonite
Definition
- Aragonite is a carbonate mineral, one of the three most common naturally occurring crystal forms of calcium carbonate, CaCO3 (the other forms being the minerals calcite and vaterite). It is formed by biological and physical processes, including precipitation from marine and freshwater environments. The crystal lattice of aragonite differs from that of calcite, resulting in a different crystal shape, an orthorhombic crystal system with acicular crystal. Repeated twinning results in pseudo-hexagonal forms. Aragonite may be columnar or fibrous, occasionally in branching helictitic forms called flos-ferri (flowers of iron) from their association with the ores at the Carinthian iron mines. (Adapted from: https://en.wikipedia.org/wiki/Aragonite)
Broader concept
In other languages
-
French
URI
http://data.loterre.fr/ark:/67375/QX8-9BZW4CNH-B
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