ARAGONITE CRYSTALS IN SPIROGYRA SP. (CHLOROPHYTA) |
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| Authors: | H. Mann S. Mann W. S. Fyfe |
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| Affiliation: | Department of Grology, University of Western Ontario, London, Ontario V6A 5B7, Canada;School of Chemistry, university of Bath, Bath BA2 7AY, U.K.;Department of Geology, University of Western Ontario, London, Ontario, N6A 5B7, Canada |
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| Abstract: | Intracellular crystals of aragonite have been identified by selected area electron diffraction (SAED) in a species of the freshwater filamentous alga Spirogyra from the Thames River, Ontario, Canada. The crystals are 2 to 24 μm in diameter, and characterized by a unique cross-shaped morphology, in which needle-like, or prismatic outgrowths develop from a common axis. Crystals may be dispersed throughout filaments, but tend to cluster as aggregates towards the centre . |
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| Keywords: | aragonite crystals Spirogyra intra-cellular calcium |
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