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Related Experiment Videos

[Pseudomorphoses in calcium oxalate urinary calculi].

W Berg, P Lange, D Rössler

    Zeitschrift Fur Urologie Und Nephrologie
    |May 1, 1979
    PubMed
    Summary

    Pseudomorphoses of whewellite to weddellite reveal crystallization processes during weddellite dehydration. Secondary whewellite formation occurs through topotactic transformation, creating oriented dissociation scars.

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    Characterization of a biologically derived rabbit tracheal scaffold.

    Journal of biomedical materials research. Part B, Applied biomaterials·2016

    Area of Science:

    • Mineralogy and Crystallography
    • Geochemistry

    Context:

    • Investigates the transformation of whewellite to weddellite.
    • Examines crystallization processes during secondary whewellite formation via weddellite dehydration.

    Purpose:

    • To analyze the pseudomorphic transformation of whewellite to weddellite.
    • To understand the crystallization and recrystallization mechanisms involved in weddellite dehydration.

    Summary:

    • Pseudomorphoses of whewellite to weddellite are observed in transparent sections and REM images, reflecting crystallization processes during secondary whewellite formation from weddellite dehydration.
    • Transformation products include fine-grained polycrystalline and larger monocrystalline whewellite due to recrystallization.
    • Thermic dehydration of weddellite crystals to whewellite occurs as a topotactic process, forming pseudomorphoses with dissociation scars oriented to the weddellite crystal lattice.

    Impact:

    • Provides insights into mineral transformation mechanisms.
    • Contributes to understanding secondary mineral formation processes.
    • Offers a detailed analysis of topotactic dehydration reactions in minerals.

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