Code: ML295

名稱   菱鐵礦/ 黝銅礦/ 黃銅礦	Name   Siderite/ Tetrahedrite/ Chalcopyrite
化學公式   FeCO3 / (Cu,Fe)12Sb4S13 / CuFeS2	Chemical Formula   FeCO3 / (Cu,Fe)12Sb4S13 / CuFeS2
莫氏硬度   3.75 – 4.25	Mohs scale of Hardness   3.75 – 4.25
描述   菱鐵礦是由碳酸亞鐵（II）組成的礦物。菱鐵礦的莫氏硬度為3.75-4.25，比重為3.96，有白色條紋和玻璃光澤或珍珠光澤。它的名字取自希臘語。它是一種有價值的鐵礦物質，因為它是48％的鐵，並且不含硫或磷。它是板狀晶體，通常是彎曲的-晶體狀到塊狀。顏色範圍從黃色到深棕色或黑色，後者歸因於錳的存在。	Description   Siderite is a mineral composed of iron(II) carbonate. Siderite has Mohs hardness of 3.75-4.25, a specific gravity of 3.96, a white streak and a vitreous lustre or pearly luster. It takes its name from the Greek word. It is a valuable iron mineral, since it is 48% iron and contains no sulfur or phosphorus. It is Tabular crystals, often curved – botryoidal to massive. Color ranges from yellow to dark brown or black, the latter being due to the presence of manganese.
小挑戰   菱鐵礦有什麼作用？   菱鐵礦已被用作鐵礦石和鋼鐵生產。源自英格蘭康沃爾郡的材料在希臘語中用“鋼鐵”一詞來表示，指的是鐵和碳的含量。	Challenge What is siderite used for? Siderite has been used as an iron ore and for steel production. Material from Cornwall, England has been called “chalybite,” after the Greek word for steel, referring to its iron and carbon content.

Reference

https://www.gemsociety.org/article/siderite-jewelry-and-gemstone-information/

by Wong Trinity on 17 Mar 2021