Introduction of mineral deposits: Mineral deposit ; A geological definition of an ore deposit; Ore Deposit Environments; The significance of ore deposit size; Which commodities are included by the definition of Ore Deposits ; The extraction of an economic commodity from ore ; Geological Factors Affecting Economics of Ore Extraction ; Shape and depth of the deposit; Mineralogy and texture of the ore; The presence of multiple extractable products; Metals enrichment factors; Ore Deposit Constitutes; Ore Deposit Geology and Related Sciences; Structural Control Ore Deposits; Depth of Occurrence Mineral deposits; Nature of Mineralization; Morphology of Ore Deposit; Geographical Localization of Ore Deposits; Orebodies; oreshoots; ore deposits; ore reserves

1. GEOLOGY OF ORES (GE3212)
Hassan Z. Harraz
Professor of Economic Geology,
Geology Department,
Faculty of Science, Tanta University, Egypt
hharraz2006@yahoo.com
Spring 2020

2. Outline of Lectures:
Topic 1: PRINCIPLES OF MINERAL DEPOSITS
Topic 2: CLASSIFICATIONS OF MINERAL DEPOSITS
Topic 3: MAGMATIC MINERAL DEPOSITS
Topic 4: METAMORPHIC MINERAL DEPOSITS
Topic 5: HYDROTHERMAL ORE DEPOSITS
Topic 6: HYDROTHERMAL ALTERATIONS
Topic 7: SEDIMENTARY ORE DEPOSITS.
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9. Lecture 1:
PRINCIPLES OF
MINERAL DEPOSITS
Prof. Dr. Hassan Z. Harraz
Geology Department, Faculty of Science, Tanta University
hharraz2006@yahoo.com
Spring 2020

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11. Terminology – Ore Deposits
• Ore
• Gangue
• Waste
• Grade
• Cut-off
• Reserves
• Host rock
• Country rock
• Hydrothermal
• Alteration
• Metamorphism
• Vein
• Replacement
• Massive sulphide
• Skarn
• Epigenetic
• Syngenetic
• Gossan
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12. Terminology - Deposit Scale Structure
• Concordant
• Discordant
• Stratiform
• Stratabound
• Footwall
• Hangingwall
• Fault
• Shear zone
• Lode, shoot
• Breccia
• Stockwork
• Chimney
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13. ORE
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14. What is Ore Grade?
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15. GANGUE
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16. ’Ore’ and ’Ore Deposit’
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27. What is the difference between
a reserve and a resource ?
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29. Figure shows morphology of surface(Open Pit) and Underground
methods.
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31. Figure 1.6 Schematic of the energy required to extract metals from ores and
rocks of different grade and mineralogy (after Skinner, 1976).
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34. The steps and processes involved in extracting a metal from an
ore deposit.
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52. Follow me on Social Media
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