| 词条 | Endmember |
| 释义 |
An endmember (also end-member or end member) in mineralogy is a mineral that is at the extreme end of a mineral series in terms of purity. Minerals often can be described as solid solutions with varying compositions of some chemical elements, rather than as substances with an exact chemical formula. There may be two or more endmembers in a group or series of minerals. For example, the tectosilicate feldspar can be described as a solid solution of the endmembers K-feldspar [KAlSi3O8], albite [NaAlSi3O8] and anorthite [CaAl2Si2O8].[1] A specific feldspar can have varying quantities of potassium (K), sodium (Na) and calcium (Ca). See also
References1. ^What is Feldspar? {{webarchive|url=https://web.archive.org/web/20080215184749/http://www.ima-na.org/about_industrial_minerals/feldspar.asp |date=2008-02-15 }} Industrial Minerals Association. Retrieved on February 9, 2008. {{Wiktionary}}{{mineral-stub}} 1 : Mineralogy |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。