Thin section photograph of Karlsbad Pisoid

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Thin section photograph of aragonitic pisoids with fringes of acicular aragonitic cement and large open pores. The rock is called "Karlsbad Sprudelstein"; it precipitated in hot, mineral-rich springs situated along tectonic faults (crossed polars; width of picture is 1.4cm; Karlovy Vary, Czech Republic).

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Avatar Bernardo Cesare 8 years, 6 months ago

WOW!