John Faithfull ππͺπΊπ΄σ §σ ’σ ³σ £σ ΄σ Ώπ§‘βπ»βπΏ#ThinSectionThursday π₯ Hot off the microscope this morning! π€ This may look dull, but the big clear (grey) grain with faint WSW-ENE parallel lines, on the right hand side of the image is a shocked quartz (produced by a meteorite impact).
The smaller greenish (orange) grain to the left is epidote. All the fragmental grains here been cemented together by turbid brown albite. From the enigmatic Stac Fada unit, (Proterozoic), in NW Scotland.
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