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be identified according to the different colors, silver and light brass yellow. After weathering.....more
with pyrite of isometric crystal system.Fresh marcasite is light brass-yellow or light bronze-yellow after.....more
streaks.When exposed to light for a long period of time, realgar will deteriorate into brown-yellow.....more
所命名的。顏色以鮮紅至深紅色為主,因具金剛光澤,故舊名又稱之為淡紅寶石銀礦(Light ruby silver)。由於摩氏硬度僅有2~2.5,無法作為寶石之用。紅色的晶體若長久受到光照作用會逐漸變為暗.....more
light if it contains a minor amount of zinc. Cadmium minerals are rare, the best-known of which.....more
contained. As the amount of iron increases, its color will change gradually from colorless to light.....more