Ijzerrijke

Ijzerrijke is a Dutch term meaning "rich in iron." It is used across disciplines to indicate a high iron content in rocks, soils, or foods. The adjective is formed from ijzer (iron) and rijk (rich) and can describe both natural materials and dietary sources.

In geology and mining, ijzerrijk describes rocks or ores with substantial iron content. Classic iron-rich minerals include hematite (ijzeroxide Fe2O3) and magnetite (Fe3O4). Iron formations such as banded iron formations (BIF) and lateritic iron deposits are described as ijzerrijk when iron dominates the composition. The exact threshold for "iron-rich" varies by context and standard.

In soils, ijzerrijk describes ferruginous soils with high iron oxide content, often producing red or yellow soil colors. These are common in tropical and subtropical regions and can influence soil properties, drainage, and fertility.

In nutrition, ijzerrijke foods are those that supply iron. Examples include red meat, poultry, fish, legumes, fortified cereals, and leafy greens. Iron in foods occurs as heme iron (animal products) or non-heme iron (plants and fortified foods); absorption is enhanced by vitamin C and inhibited by tannins, phytates, and calcium. Recommendations depend on age, sex, and physiological status.

See also: iron ore, hematite, magnetite, siderite, ferric oxide, ferruginous soils, iron in nutrition.