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.
01393853
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.
01393852
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.
01393851
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.
01313061
John Cancalosi / Pyrite (FeS2) (Iron sulfide) from Peru. Popularly known as fool's gold - Formerly used in the production of sulfuric acid.
01246532
Tony Phelps / April fool plant (Haemanthus coccineus) in flower, De Hoop Nature reserve, Western Cape, South Africa
00785322
Thomas Marent / Fool's Gold Beetle (Aspidomorpha miliaris) protecting itself by withdrawing head and legs under shield, Canyon Reserve, Sumatra, Indonesia
01182004
SINCLAIR STAMMERS / Fossil of Pyritised arms of a Jurassic Crinoid causing the golden colour, from the Black Ven, between Charmouth and Lyme Regis, Jurassic coast, West Dorset, UK
01100807
GEORGETTE DOUWMA / April fool plant in flower {Haemanthus coccineus} Gansbaai, South Africa
01388198
Paul D Stewart / European Brown Bear (Ursos arctos arctos) kills hunter who has taken her cubs. 1731 Physica Sacra (Sacred Physics) by Johann Scheuchzer (1672-1733) bear attack, folio copper engraving drawn by a team...
01346262
John Cancalosi / Pyrite (FeS2, Iron sulfide), popularly known as 'fool's gold'. Formerly used in the production of sulfuric acid. Sample from Buick mine, Missouri, USA.
01346273
John Cancalosi / Pyrite on Talc. Pyrite (FeS2, iron sulfide) is popularly known as 'fool's gold', formerly used in the production of sulfuric acid. Talc is easily distinguishable by its extreme softness, used in lubri...
01346244
John Cancalosi / Pyrite (FeS2, Iron sulfide), popularly known as 'fool's gold'. Formerly used in the production of sulfuric acid. Sample from Peru.
01346178
John Cancalosi / Pyrite (FeS2, Iron sulfide). Sample from Butte Montana. Popularly known as 'fool's gold'. Formerly used in the production of sulfuric acid.
01346231
John Cancalosi / Pyrite (FeS2, iron sulfide), popularly known as 'fool's gold', formerly used in the production of sulfuric acid. Sample from Peru.
01346271
John Cancalosi / Pyrite on Talc. Pyrite (FeS2, iron sulfide) is popularly known as 'fool's gold', formerly used in the production of sulfuric acid. Talc is easily distinguishable by its extreme softness, used in lubri...
01346205
John Cancalosi / Pyrite (FeS2, iron sulfide), known as 'Fool's Gold'. Formerly used in sulphuric acid production. Sample from Viburnum Trend, Reynolds County Missouri, USA.
01346270
John Cancalosi / Pyrite (FeS2, Iron sulfide), popularly known as 'fool's gold'. Formerly used in the production of sulfuric acid. Sample from Yishan, Guangxi, China.
01346179
John Cancalosi / Pyrite (FeS2, Iron sulfide). Popularly known as 'fool's gold'. Formerly used in the production of sulfuric acid. Sample from Buick mine, Missouri.
01346243
John Cancalosi / Pyrite (FeS2, Iron sulfide), popularly known as 'fool's gold'. Formerly used in the production of sulfuric acid. Sample from Peru.
01346224
John Cancalosi / Pyrite (FeS2, iron sulfide), popularly known as 'fool's gold', formerly used in the production of sulfuric acid. Sample from Peru.
01346235
John Cancalosi / Pyrite (FeS2, iron sulfide), popularly known as 'fool's gold', formerly used in the production of sulfuric acid. Sample from Peru.
01346249
John Cancalosi / Pyrite (FeS2, Iron sulfide), popularly known as 'fool's gold'. Formerly used in the production of sulfuric acid. Sample from Peru.
01346236
John Cancalosi / Pyrite (FeS2, iron sulfide), on shale. Popularly known as 'fool's gold', formerly used in the production of sulfuric acid. Sample from China.
01346225
John Cancalosi / Pyrite (FeS2, iron sulfide), popularly known as 'fool's gold', formerly used in the production of sulfuric acid. Sample from Eagle Mine, Colorado, USA.
01346288
John Cancalosi / Pyrite (FeS2, Iron sulfide), popularly known as 'fool's gold'. Formerly used in the production of sulfuric acid. Sample from Peru.
01346238
John Cancalosi / Pyrite (FeS2, iron sulfide), popularly known as 'fool's gold', formerly used in the production of sulfuric acid. Sample from Ambassaguas #2 Mine, Ambassaguas La Rioja Spain.
01346272
John Cancalosi / Pyrite on Talc. Pyrite (FeS2, iron sulfide) is popularly known as 'fool's gold', formerly used in the production of sulfuric acid. Talc is easily distinguishable by its extreme softness, used in lubri...
01320420
John Cancalosi / Pyrite (Iron sulphide, FeS2) known as "fool's gold". Navajun, Spain
01318803
John Cancalosi / Pyrite [FeS2 / Iron sulphide] from Illinois, USA. "Pyrite sun" or " pyrite dollar", popularly known as "fool's gold" - Formery used in the production of sulphuric acid
![Pyrite [FeS2 / Iron sulphide] from Illinois, USA. "Pyrite sun" or " pyrite dollar", popularly known as "fool's gold" - Formery used in the production of sulphuric acid](http://nplimages.infradoxxs.com/cache/tcache/01318803.jpg "Pyrite [FeS2 / Iron sulphide] from Illinois, USA. \"Pyrite sun\" or \" pyrite dollar\", popularly known as \"fool's gold\" - Formery used in the production of sulphuric acid")