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共找到 6 筆符合的資料
, it turns iridescent deep purple or blue. After a period of time, it turns dark black. The streak.....more
luster, Enargite is notable for its grayish black color and streak. However, a tarnish will dull.....more
, but chalocoprite is more yellowish and lower in hardness. The black-green streak can be used.....more
high specific weight and grayish to black color and cleavage with the crystal structure of wheel.....more
is characterized in its metallic luster, gray to black colors and brittleness. It is one.....more
: marmatite (Fe>8-10%) and black sphalerite (Fe~26%).Sphalerite can be commonly found in hydrothermal.....more
