Photomicrograph of the fossil skeleton of a Nummulite, unicellular ...
Photomicrograph of a slag from a Roman site in northern Italy. It s...
Polarized light photomicrograph of a thin section of "Ocean Jasper...
Photomicrograph of a granulite from N. Manitoba, Canada. The rock i...
Heart-shaped aggregate of plagioclase and pyroxene in a cordierite-...
Photomicrograph of a rock from Kerala (India). The black laths inte...
Polarized light photomicrograph of a nummulite from a Tertiary rock...

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