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Geological Core Analysis: Microscopic Observations and SEM Imaging

Explore detailed observations and images of geological core samples, including minerals, rock fragments, seed casings, gypsum crystals, and shell fragments. Comprehensive analysis of finer and coarser fractions from Core 8 and Core 12. Detailed optical and SEM images provided.

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Geological Core Analysis: Microscopic Observations and SEM Imaging

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  1. Samples were washed briefly in distilled water, rinsed in methanol, air-dried mounted on aluminum stubs using double-stick tape Finer fraction from ‘Core 8’ optical image – mount is ~10 mm diameter; note shell fragments

  2. Coarser fraction from ‘Core 8’ Optical image – mount is ~10 mm Note seed casing (arrow); fragment of gypsum crust

  3. Finer fraction from ‘Core 12’ Optical image – mount is ~10 mm quartz, k-feldspar are dominant minerals darker grains are rock fragments

  4. Coarser fraction from ‘Core 12’ note rounding of larger grains of quartz

  5. SEM-BSE Core 8 Coarse fraction note gypsum crystals (arrows)

  6. SEM-BSE Core 8 Coarse fraction closer view of previous frame

  7. SEM-BSE Core 8 Coarse fraction gypsum crystals

  8. SEM-BSE Core 8 Coarse fraction gypsum crystals encrusting lithic fragment

  9. SEM-BSE Core 8 Coarse fraction note seed casing; shell fragment

  10. SEM-BSE Core 8 Coarse fraction dark (in optical view) lithic fragment

  11. SEM-BSE Core 8 Coarse fraction FE-Mn mineral on quartz grain

  12. SEM-BSE Core 8 Coarse fraction shell fragment (arrow)

  13. SEM-BSE Core 12 – Fine Fraction general view

  14. SEM-BSE Core 12 – Coarse Fraction note rounding of large quartz grain (arrow)

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