共找到 3 筆符合的資料
luster, Enargite is notable for its grayish black color and streak. However, a tarnish will dull.....more
of three elements: copper, iron, and sulfur and usually a small amount of silver, gold, manganese.....more
and selenium, and small amounts of gold and silver sometimes.It is of leaden color and low hardness.....more
