Topic 1 concept of mineral deposits

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Geology Department, Faculty of Science, Tanta University

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

Educação

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

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.
2

Follow me on Social Media
http://facebook.com/hzharraz
http://www.slideshare.net/hzharraz
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Lecture 1:
PRINCIPLES OF
MINERAL DEPOSITS
Prof. Dr. Hassan Z. Harraz
Geology Department, Faculty of Science, Tanta University
hharraz2006@yahoo.com
Spring 2020

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
11

Terminology - Deposit Scale Structure
• Concordant
• Discordant
• Stratiform
• Stratabound
• Footwall
• Hangingwall
• Fault
• Shear zone
• Lode, shoot
• Breccia
• Stockwork
• Chimney
12

What is the difference between
a reserve and a resource ?
27

Figure shows morphology of surface(Open Pit) and Underground
methods.
29

Figure 1.6 Schematic of the energy required to extract metals from ores and
rocks of different grade and mineralogy (after Skinner, 1976).
31

The steps and processes involved in extracting a metal from an
ore deposit.
34

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Topic 1 concept of mineral deposits

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. 2

3. 3

4. 4

5. 5

6. 6

7. 7

8. Follow me on Social Media http://facebook.com/hzharraz http://www.slideshare.net/hzharraz https://www.linkedin.com/in/hassan-harraz-3172b235

9. Lecture 1: PRINCIPLES OF MINERAL DEPOSITS Prof. Dr. Hassan Z. Harraz Geology Department, Faculty of Science, Tanta University hharraz2006@yahoo.com Spring 2020

10. 10

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 11

12. Terminology - Deposit Scale Structure • Concordant • Discordant • Stratiform • Stratabound • Footwall • Hangingwall • Fault • Shear zone • Lode, shoot • Breccia • Stockwork • Chimney 12

13. ORE 13

14. What is Ore Grade? 14

15. GANGUE 15

16. ’Ore’ and ’Ore Deposit’ 16

17. 17

18. 18

19. 19

20. 20

21. 21

22. 22

23. 23

24. 24