ML281 Agate Slice (blue)

Code: ML281

  瑪瑙切片(藍色)Name   Agate Slice (blue)
化學公式   SiO2Chemical Formula   SiO2
莫氏硬度 6.5–7Mohs scale of Hardness 6.5–7
  瑪瑙切片的顏色顯示為藍色。瑪瑙片的條紋是白色的。它的光澤是玻璃的。瑪瑙片是貝殼狀的,由脆性材料製成,具有光滑的曲面特徵。它不是放射性的。  Description   The colour of agate slice occurs as blue. The streak of agate slice is white. Its luster is vitreous. Agate slice is conchoidal developed in brittle materials characterized by smoothly curving surfaces. It is not radioactive.
小挑戰   我們在哪裡可以找到這石頭? 遍布全世界,它們在蘇必利爾湖沿岸,明尼蘇達州東北部和威斯康星州西北部都很常見。  Challenge   Where can we find this stone?  Can be found all over the world, and they are common along the shores of Lake Superior and in northeast Minnesota and northwest Wisconsin.

Reference

http://webmineral.com/data/Quartz.shtml#.YFGKStwRWUk

https://sciencing.com/identify-unpolished-agates-6180873.html

by Lau Ho Chun on 17 Mar 2021