Málmríkt

Málmríkt is an Icelandic term that translates to “rich in metals” and is used in geology to describe rocks or geological formations that have a higher-than-average concentration of metal-bearing minerals. The term covers ore-bearing rocks containing economically valuable metals such as iron, copper, zinc, lead, nickel, gold, and silver, among others. It is commonly applied to ore deposits formed through hydrothermal activity, magmatic differentiation, metasomatic processes, or sedimentary exhalation.

Formation and indicators: Málmríkt rocks are identified by elevated metal content in assays, as well as by characteristic mineral assemblages such as sulfides (for example pyrite, chalcopyrite, sphalerite, galena) and associated alteration patterns. Geophysical anomalies and geochemical surveys help locate these rocks for further investigation. Common ore-genesis types include hydrothermal veins, massive sulfide deposits, porphyry systems, and skarns.

Economic and practical considerations: Labeling a rock body as málmríkt implies potential economic value, but mining viability depends on ore grade and tonnage, metallurgical recoveries, mining and processing costs, logistics, and market conditions. Environmental, regulatory, and social factors also influence whether a málmríkt deposit is developed.

See also: Ore deposit, Mineralogy, Geochemical exploration, Porphyry ore, Skarn, Hydrothermal mineralization.