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Source: wikipedia.org
التحاليل النموذجية للبيرلايت (Info)
- 70–75% ثنائي أكسيد السليكون: SiO2
- 12–15% أكسيد الألومنيوم: Al2O3
- 3–4% أكسيد الصوديوم: Na2O
- 3–5% أكسيد البوتاسيوم: K2O
- 0.5-2% أكسيد الحديد: Fe2O3
- 0.2–0.7% أكسيد المغنيسيوم: MgO
- 0.5–1.5% أكسيد الكالسيوم: CaO
- 3–5% فقدان الإشعال (كيميائي / ماء مشترك).
