水晶和矿物之间的区别——地球科学堆栈交换江南电子竞技平台江南体育网页版 最近30从www.hoelymoley.com 2023 - 07 - 10 - t13:13:24z //www.hoelymoley.com/feeds/question/23401 https://creativecommons.org/licenses/by-sa/4.0/rdf //www.hoelymoley.com/q/23401 2 水晶和矿物之间的区别 Jithin Murali //www.hoelymoley.com/users/26216 2022 - 01 - 16 t12:32:29z 2022 - 01 - 16 t17:55:28z < p >的具体区别是什么水晶和矿物? < / p > //www.hoelymoley.com/questions/23401/-/23404 # 23404 2 弗雷德回答的水晶和矿物之间的区别 弗雷德 //www.hoelymoley.com/users/2470 2022 - 01 - 16 t17:55:28z 2022 - 01 - 16 t17:55:28z < p > <强> < A href = " https://en.wikipedia.org/wiki/Crystal " rel = " nofollow noreferrer " >水晶< / > < /强>,< / p > < blockquote > < p >固体材料的成分(如原子、分子或离子)被安排在一个高度有序的微观结构,形成晶格,延伸向四面八方扩散。< / p > < p >显微镜下,单晶原子在一个近乎完美的周期安排;a polycrystal is composed of many microscopic crystals (called "crystallites" or "grains"); and an amorphous solid (such as glass) has no periodic arrangement even microscopically.

enter image description here

Examples of crystals include diamond (C), table salt (NaCl), snow and ice (H2O) and chalcopyrite (CuFeS2).

Minerals however,

a solid chemical compound with a fairly well-defined chemical composition and a specific crystal structure that occurs naturally in pure form.

The international Mineralogical Association requirements for classification minerals are:

  1. It must be a naturally occurring substance formed by natural geological processes, on Earth or other extraterrestrial bodies.
  2. It must be a solid substance in its natural occurrence. A major exception to this rule is native mercury.
  3. It must have a well-defined crystallographic structure; or, more generally, an ordered atomic arrangement.
  4. It must have a fairly well defined chemical composition. However, certain crystalline substances with a fixed structure but variable composition may be considered single mineral species.

Consequently, snow and ice are crystals but they are not minerals.
Baidu
map