malmeista
Malmeista is a Finnish word form meaning “from the ores” or “of the ores,” and it is used in mining, geology, and related fields. It represents the elative plural form of malmi, which means ore. The root malm- combines with the plural suffix -e- and the elative case ending -sta (or -stä), to express origin or source when referring to multiple ore deposits or ore materials. Because Finnish morphology relies on case endings rather than prepositions, malmeista is typically found in contexts that describe provenance, composition, or derivation from ore resources.
In practice, malmeista appears in technical and scientific texts to mark sourcing or association with ore.
Etymologically, malmi (ore) provides the semantic core, while -sta attaches the meaning “from” and the -e- serves
See also: malmi, Finnish noun cases, elatiivi (elative case), mining terminology.