Fluid inclusion.This jagged edged hollow in a blue topaz magnified 18x is filled with liquid and a b
Fluid inclusion.This jagged edged hollow in a blue topaz magnified 18x is filled with liquid and a bubble of gas. The compositions of such inclusions, which often preserve traces of the mother ichor from which the crystal grew, can tell us alot about the geological conditions in which they were formed. They are common in many minerals, including quartz and emeralds. LozImage credit: David A. Smith. -- source link
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