Code: ML199

名稱 鈷華	Name Erythrite
化學公式 Co3(AsO4)2•8H2O	Chemical Formula Co3(AsO4)2•8H2O
莫氏硬度 1.5 – 2.5	Mohs scale of Hardness 1.5 – 2.5
描述 顏色是鮮粉紅色。光澤是金剛烷屬，在解理處呈珍珠狀。條紋為淡紅色至粉紅色。透明性是透明至半透明的。	Description The color is bright pink. Luster is Subadamantine, pearly on cleavages. The streak is pale red to pink. The diaphaneity is transparent to translucent.
小挑戰 我們在哪裡可以找到這塊石頭？ 紅水晶存在於德國。法國阿勒蒙特；英格蘭康沃爾和坎伯蘭；智利;摩洛哥和美國西南部。	Challenge Where can we find this stone? rythrite occurs in Schneeberg, Ger.; Allemont, France; Cornwall and Cumberland, Eng.; Chile; Morocco; and the southwestern United States.

Reference

1. https://en.wikipedia.org/wiki/Erythrite

2. https://www.britannica.com/science/erythrite

By Chan Yan Hei 4A03 on 18 April 2021