名稱   電氣石	Name   Apophyllite
化學公式   K,Na)Ca4Si8O20(F,OH)•8H2O	Chemical Formula   K,Na)Ca4Si8O20(F,OH)•8H2O
莫氏硬度   4.5 – 5	Mohs scale of Hardness   4.5 – 5
描述   電氣石的顏色為無色，白色，灰色，淺黃色，淺綠色，深綠色，粉紅色，紅色。 它的光澤是玻璃質的，乳白色的。 耐磨性也僅用於顯示。	Description   The colors of Apophyllite have colorless, white, grayish, pale yellow, pale green, dark green, pink, reddish. And the luster of it is Vitreous, pearly on cleavage. Also the wearability is for display only.
小挑戰   我們在哪裡可以找到這塊石頭？   在許多玄武岩和輝綠岩採石場中，鬼臼石在世界範圍內都很普遍，儘管大型，結構良好的晶體僅限於幾個重要地區。 到目前為止，最大的晶體來自印度的Deccan Trap Rocks，在那裡生產沸石的玄武岩採石場中可以找到大量的晶體。	Challenge   Where can we find this stone?   Apophyllite is common worldwide in many basalt and diabase quarries, though large, well-formed crystals are limited to several important localities. By far, the largest crystals are from the Deccan Trap Rocks of India, and can be found in abundance in the zeolite-producing basalt quarries there.

Reference

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

2. https://www.minerals.net/mineral/apophyllite.aspx

By 4A34 Yeung Tsz Ying on 20210418