Aragonite, Serfou, Morocco
Aragonite is a carbonate mineral, one of the two common, naturally occurring, crystal forms of calcium carbonate, CaCO3. Aragonite's crystal lattice differs from that of calcite, resulting in a different crystal shape, an orthorhombic system with acicular crystals. Repeated twinning results in pseudo-hexagonal forms. Aragonite may be columnar or fibrous, occasionally in branching stalactitic forms.
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Photo credit: © Phil Degginger / Alamy / Afripics
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Keywords: aragonite, caco3, calcium, carbonate, crystal, mineral, minerals, morocco, orthorhombic, serfou, specimen, specimens
