This SE-SEM micrograph shows an example of the ubiquitous low-magnesium calcite microcrystals that characterize many ancient limestones. This example comes to use from a core sample from the Brown-Snowplow 1-5 well in the Michigan Basin. This micrograph was collected by Matthew Runk, an undergraduate student enrolled in the Advanced Earth Materials course, and CPCL researcher, Mohammed Al-Musawi. For more information about calcite microcrystals, click here!
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