esiintymät

Esiintymät is a Finnish noun formed from esiintyä, meaning to appear. The plural esiintymät denotes multiple appearances, occurrences, or deposits depending on the context. In everyday language it can refer to the appearance of a person or thing at events or in media, for example artistin esiintymät festivaaleilla (an artist’s performances at festivals). The term also appears in more abstract uses, such as the appearance or manifestation of phenomena.

In geology and mining, esiintymä refers to a naturally occurring concentration of a useful substance in the Earth's crust. An esiintymä can be a mineral deposit with defined limits, spatial distribution and quality (grade). It is a fundamental concept in exploration, assessment and mining planning. The economic viability of exploiting an esiintymä depends on factors such as size, grade, depth, metallurgy and market prices. In technical contexts it is often discussed alongside related concepts like varanto (reserve) and tuotantokyky (extraction capability).

In other contexts, esiintymät can describe occurrences of phenomena in data, literature or media, such as the frequency with which a concept appears, or the scheduled appearances of a performer. The term thus covers both tangible deposits in the Earth and discrete events or appearances in social, cultural or scientific contexts.

Etymology traces the word to the verb esiintyä, “to appear,” reflecting the core idea of something that shows itself in a particular place or time.