http://www.innogytech.com (Innogy subsidiary) UK Wed, 16 Dec 2009 16:30:23 +0000 http://wordpress.org/?v=2.9.2 en hourly 1 http://www.innogytech.com/question-about-chemical-formulas-for-minerals/ http://www.innogytech.com/question-about-chemical-formulas-for-minerals/#comments Wed, 25 Nov 2009 13:58:37 +0000 admin http://www.innogytech.com/question-about-chemical-formulas-for-minerals/ 1) What does the commar represent in the formula for Olivine (Mg,Fe)2 Si04?
2) As quartz is not completely pure why are’nt impurities such as Ti or Al included in its chemical formula?
3) What is meant by the term mineral end members?

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