the.com/olivine

The green mineral that proves Earth's mantle is basically jewelry we stand on.

means A silicate mineral, usually olive-to-bottle green, made of magnesium and iron, that forms deep in the mantle and in certain meteorites — its clear, gem-grade form is called peridot.

from Named in the early 1800s from French olivine, built on the Latin oliva, 'olive,' simply because the mineral's characteristic color is that same yellow-green. No myth, no mineral hunter's surname — just a chemist or mineralogist looking at a rock and reaching for the nearest fruit on the table.

color source
iron gives it that olive-green glow
gem form
called peridot when cut for jewelry
cosmic traveler
found in meteorites and comet dust samples
weathering role
absorbs CO2 as it breaks down slowly
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