Meanings (ES + gloss)
mena • mineral
Rock or other material that contains valuable or utilitarian materials; primarily a rock containing metals or gems for which it is typically mined and processed.
Manganism has been known about since the 19th century, when miners exposed to ores containing manganese, a silvery metal, began to totter, slur their speech and behave like someone…
They generally occur in the earth in what are called veins, and are seldom found in the pure metallic state, but generally in combination with some other substance, in which state…
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