Rocks on Worm’s Head Causeway (2)

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Red rock on Worm's Head Causeway: Red haematite and white calcite crystals in a Carboniferous limestone fissure exposed on Worm's Head Causeway, Gower, South Wales, UK (7)

In the previous post in this series Rocks on Worm’s Head Causeway (1), I mentioned that red deposits occur in the cracks and crevices of Carboniferous limestone exposed on the wave cut platform known as the Worm’s Head Causeway in Gower.

Here, as promised, are some more photographs showing these seams of blood-red haematite  (iron oxide compounds) in conjunction with what I believe are white calcite crystals. The seams of these minerals can cut right across the lines of the limestone strata, and they vary considerably in width  from a few centimetres upto half a metre.

Worm's Head causeway rocks: A seam of white calcite crystals stained with iron in Carboniferous limestone exposed on Worm's Head Causeway, Gower, South Wales, UK (8)

Rocks on Worm's Head Causeway: Detail of white calcite crystals stained with iron in Carboniferous limestone strata exposed on Worm's Head Causeway, Gower, South Wales, UK (9)

Calcite crystals at Worm's Head Causeway: Close-up of white calcite crystals stained with iron in Carboniferous limestone strata exposed on Worm's Head Causeway, Gower, South Wales, UK (10)

Rocks on Worm's Head Causeway: Seam of iron-stained calcite crystal in Carboniferous limestone at Worm's Head causeway, Gower, South Wales, UK (11)

Worm's Head Causeway rocks: Streaks of pink and white calcite in Carboniferous limestone rocks topped with patches of yellow lichen, on Worm's Head Causeway, Gower, South Wales, UK (12)

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