Opaque and ore minerals associated with sedimentary rocks

Argillaceous limestone, Lancashire. Britain

Beach placer, Richards Bay, Republic of South Africa

Carbonate-hosted Irish-type deposits, Navan, County Meath, Ireland

Carbonate-hosted Irish-type deposits,Gortdrum, County Tipperary, Ireland

Clay, ironstone, Great Oakley. Sussex, Britain

Fossil placer, Witwatersrand, Republic of South Africa

Gold-platinum placer. Kalimantan, Indonesia

Iron formation (banded), Little Broken Hill, New South Wales, Australia

Iron formation (banded), Hamersley Basin, Western Australia

Laterite. Gove, Northern Territories, Australia

Manganese nodules. Pacific Ocean

Metamorphosed manganese ore. Gwynedd, Wales, Britain

Minette ore, Egypt

Mississippi Valley-type deposits, Clevedon, Somerset, Britain

Mississippi Valley-type deposits, Nenthead area, North Pennine Orefield

Mississippi Valley-type deposits, Oxclose Mine, South Pennine Orefield, Britain

Mississippi Valley-type deposits, Settlingstones Mine, North Pennine Orefield

Mississippi Valley-type deposts, Shullsburg area, Southwest Wisconsin, USA

Red-bed copper deposits, Alderley Edge, Cheshire, England

River placer, Jos Plateau, Nigeria

River placer, New Zealand

Seathwaite Tarn, English Lake District, Britain

St Bees Sandstone. Cumbria, Britain

Stratiform copper-silver ores, Mount Gabriel, County Cork, Ireland