Lapis Lazuli. Afghanistan.

This is a thin section of Lapis Lazuli from Afghanistan. Blue Hauyne/Lazurite often surrounding grains of apatite. Areas of Diopside showing bright XPL colours and twinning/exsolution and rims of secondary alteration minerals. This material does not look particularly blue in XPL, as the sodalite/Hauyne/Lazulite family are isotropic and thus dark in XPL.

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