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2951 - Iron Duricrust with Lisangang structures 0

Iron Duricrust with Lisangang structures

A Duricrust means Hard crust (Latin, Duri= Hard ). Duricrusts are surface or near-surface of the Earth consisting of a hardened accumulation of silica (SiO2), alumina (Al2O3), and iron oxide (Fe2O3), in varying proportions.  The...