The history of Greek clay-rich Diatomaceous earth

Clay-rich diatomaceous earth – also known as diatomaceous earth – is a sedimentary rock formed from the fossilised shells of microscopic algae (diatoms). It is a porous, lightweight mineral rich in silicon dioxide, with a wide range of industrial and environmental applications.

In Greece, diatomaceous earth is often found mixed with fine-grained materials (clay and/or limestone components), which is why it is characterised as clay-rich diatomaceous earth. This article provides a documented account of the history of Greek diatomaceous earth, from its geological origin and the earliest mining operations to its modern uses and comparisons with international deposits.

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