Množina: galenas

ETYM Latin galena lead ore, dross that remains after melting lead: cf. French galène sulphide of lead ore, antidote to poison, stillness of the sea, calm, tranquility.
Soft blue-gray mineral; lead sulfide; a major source of lead.
Natural lead sulfite, main source of lead.
Chief ore of lead, consisting of lead sulfide, PbS. It is lead-gray in color, has a high metallic luster and breaks into cubes because of its perfect cubic cleavage. It may contain up to 1% silver, and so the ore is sometimes mined for both metals. Galena occurs mainly among limestone deposits in Australia, Mexico, Russia, Kazakhstan, the UK, and the US.