What is 礦石??

What is 礦石(mineral)?
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礦石(mineral)
A mineral is a naturally occurring solid formed through geological processes that has a characteristic chemical composition, a highly ordered atomic structure, and specific physical properties. A rock, by comparison, is an aggregate of minerals and/or mineraloids, and need not have a specific chemical composition. Minerals range in composition from pure elements and simple salts to very complex silicates with thousands of known forms. The study of minerals is called mineralogy.
你可以看看這個網址:
http://en.wikipedia.org/wiki/Mineral
Hope to help you!
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hi~!我以前修讀化學時都有以上問題
現在問題以經解決了
等我為你解釋吧
答覆有2個
1.當大量金屬元素
沉積在泥土中
經過一段長時間
便會形成礦石

2.當一個人便秘時
大便大量在肚內積聚
所形成的一種十分結實的石頭
所以大便又稱開礦