books المعادن والخامات
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# Mineral-rich ores resources
# Mining and mineral ores
# gold and ores
# about metal ores
# processing of mineral ores
# division of mineral ores
# Mineral ores in Egypt
# About ores and mineral deposits
# composition of mineral ores
# Methods of forming mineral ores
# extraction of mineral ores
# mineral ores in geology
# Thermal ores and mineral deposits
# Geology of ores and mineral deposits
# Ownership of mineral ores
# Mineral ores in Islamic jurisprudence
# Bahir - raw materials and materials
# You and the materials and materials
# Fashion and materials
# Embroidery tools and materials
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Source: wikipedia.org
معادن الخامات (Info)
وهي المعادن الحاوية على العناصر ذات القيمة الاقتصادية مثل معدن الكالكوبيريت الجبسيت والأرجنتيت وتسمى الصخور الحاملة لهذه المعادن الاقتصادية بالخامات المعدنية أو رواسب الخامات.
