legrandite (iou) and oriskany (medicine)

legrandite (iou)

legrandite noun. M20.
[from Legrand, a 20th-cent. Belgian mine manager + -ITE1.]
Mineralogy. A hydrated arsenate of zinc occurring as yellow transparent monoclinic crystals.

oriskany
<geology> Designating, or pertaining to, certain beds, chiefly limestone, characteristic of the latest period of the Silurian age. Oriskany period, a subdivision of the American Paleozoic system intermediate or translational in character between the Silurian and Devonian ages. See Chart of Geology.

Origin: From Oriskany, in New York.

Source: Websters Dictionary

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