Taenite, kamacite and troilite. Alta'ameem Meteorite, Iraq

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Taenite (cream) is the main phase; it is altered and tarnished along its margin (bottom right). Kamacite (blue-white, slightly higher reflectance, centre top) forms a wide rim about the top of the taenite and also shows alteration (left centre). Small crystals of troilite (brown, right) are present in the pyroxene-rich (dark grey) matrix.

Polished thin section, plane polarized light, x 140, air

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