John Cancalosi / Pyrite (FeS2, iron sulfide), known as 'Fool's Gold'. Formerly used in the production of sulfuric acid. Sample from Concepcion de Oro, Zacatecas State, Mexico.
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Mike Read / Clouds reflected in River Avon, Fool's watercress (Apium nodiflorum) on bank. Avon Valley SSSI, Dorset, England, UK. September 2018.
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Terry Whittaker / Water vole (Arvicola amphibius) feeding on Fool's watercress (Apium nodiflorum), Kent, England, UK. October.
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Terry Whittaker / Water vole (Arvicola amphibius) feeding on Fool's watercress (Apium nodiflorum), Kent, England, UK. October.
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Terry Whittaker / Juvenile Water vole (Arvicola amphibius) feeding on Fool's watercress (Apium nodiflorum), Kent, England, UK. October.
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Cyril Ruoso / Blood flower (Haemanthus coccineus) Table Mountain NP, Cape Peninsula, South Africa
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Paul D Stewart / Sectioned fossil ammonite where the shell material has been replaced by pyrites, and the empty cavities of the shell have filled during fossilisation with crystalised yellow/green calcite preserving d...
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Linda Pitkin / 2020VISION / Aquatic plants in River Itchen: Fool's-water-cress (Apium nodiflorum), and Stream Water-crowfoot (Ranunculus penicillatus subsp. pseudofluitans). Ovington, Hampshire, England, May.
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Linda Pitkin / 2020VISION / Aquatic plants in River Itchen: Fool's-water-cress (Apium nodiflorum), and Stream Water-crowfoot (Ranunculus penicillatus subsp. pseudofluitans). Ovington, Hampshire, England, May.
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Linda Pitkin / 2020VISION / Aquatic plants in River Itchen: Fool's-water-cress (Apium nodiflorum), and Stream Water-crowfoot (Ranunculus penicillatus subsp. pseudofluitans). Ovington, Hampshire, England, May.
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John Cancalosi / Pyrite (FeS2) (Iron sulfide) from Peru. Popularly known as fool's gold - Formerly used in the production of sulfuric acid.
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Tony Phelps / April fool plant (Haemanthus coccineus) in flower, De Hoop Nature reserve, Western Cape, South Africa
