Archive - The Geologic Column

Trapiche emerald

Dec 10 •

Richard I Gibson

Solid petroleum

Dec 8 •

Richard I Gibson

Dec 5 •

Richard I Gibson

The mine, not the plant

Dec 3 •

Richard I Gibson

Z is for Zircon

Last in a series!

Dec 1 •

Richard I Gibson

November 2025

Yellow fluorite

But not fluorescent

Nov 28 •

Richard I Gibson

A rock, not a mineral

Nov 26 •

Richard I Gibson

Huntington Valley

Nov 24 •

Richard I Gibson

Rare and complex

Nov 21 •

Richard I Gibson

A predatory fish

Nov 19 •

Richard I Gibson

Nov 17 •

Richard I Gibson

and the Vinland map

Nov 14 •

Richard I Gibson

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