Mosier,D.L., Berger,V.I. and Singer,D.A.(2009): Volcanogenic Massive Sulfide Deposits of the World−Database and Grade and Tonnage Models. Open-File Report 2009-1034, U.S. Department of the Interior/U.S. Geological Survey, 50p.

『世界の火山性塊状硫化物鉱床−データベースおよび品位とトン数モデル』

Contents

Introduction.................................................................................................................................................... 1
Rules Used .................................................................................................................................................... 2
Classification of Volcanogenic Massive Sulfide Subtypes.......................................................................... 3
Preliminary Analysis ...................................................................................................................................... 5
　Grade and Tonnage Models ....................................................................................................................... 5
　Gold-Silver and Intrusions........................................................................................................................ 19
Explanation of Data Fields........................................................................................................................... 22
Location Map ............................................................................................................................................... 26
Acknowledgments ....................................................................................................................................... 26
References .................................................................................................................................................. 27

Appendixes.................................................................................................................................................. 29
A. Summary Statistics For Volcanogenic Massive Sulfide Grade-Tonnage Models................................. 29
　Felsic Volcanogenic Massive Sulfide Deposits ..................................................................................... 29
　　Tonnage..................................................................................................................................... 29
　　Grades........................................................................................................................................ 29
　Bimodal-Mafic Volcanogenic Massive Sulfide Deposits........................................................................ 34
　　Tonnage..................................................................................................................................... 34
　　Grades........................................................................................................................................ 35
　Mafic Volcanogenic Massive Sulfide Deposits ...................................................................................... 40
　　Tonnage..................................................................................................................................... 40
　　Grades........................................................................................................................................ 40
B. Deposit Model Country Codes and Country Names............................................................................. 44

Figures
1. Box plots of deposit tonnages by volcanogenic massive sulfide deposit subtypes. ................................. 8
2. Box plots of average copper grades by volcanogenic massive sulfide deposit subtypes. ........................ 8
3. Cumulative frequency of ore tonnages of felsic volcanic massive sulfide deposits. ............................... 10
4. Cumulative frequency of copper grades of felsic volcanic massive sulfide deposits. ............................. 11
5. Cumulative frequency of zinc grades of felsic volcanic massive sulfide deposits. ................................. 11
6. Cumulative frequency of lead grades of felsic volcanic massive sulfide deposits. ................................. 12
7. Cumulative frequency of gold grades of felsic volcanic massive sulfide deposits. ................................. 12
8. Cumulative frequency of silver grades of felsic volcanic massive sulfide deposits. ............................... 13
9. Cumulative frequency of ore tonnages of bimodal-mafic volcanic massive sulfide deposits. ................. 13
10. Cumulative frequency of copper grades of bimodal-mafic volcanic massive sulfide deposits. ............. 14
11. Cumulative frequency of zinc grades of bimodal-mafic volcanic massive sulfide deposits. ................. 14
12. Cumulative frequency of lead grades of bimodal-mafic volcanic massive sulfide deposits. ................. 15
13. Cumulative frequency of gold grades of bimodal-mafic volcanic massive sulfide deposits. ................. 15
14. Cumulative frequency of silver grades of bimodal-mafic volcanic massive sulfide deposits. ............... 16
15. Cumulative frequency of ore tonnages of mafic volcanic massive sulfide deposits. ............................ 16
16. Cumulative frequency of copper grades of mafic volcanic massive sulfide deposits. .......................... 17
17. Cumulative frequency of zinc grades of mafic volcanic massive sulfide deposits. ............................... 17
18. Cumulative frequency of gold grades of mafic volcanic massive sulfide deposits. ............................... 18
19. Cumulative frequency of silver grades of mafic volcanic massive sulfide deposits. ............................. 18
20. Comparison histograms of the presence of syn-mineral intrusions and gold-bearing volcanogenic massive sulfide subtypes (felsic, mafic, and bimodal-mafic volcanogenic massive sulfide deposits)... 20
21. Comparison histograms of the presence of post-mineral intrusions and gold-bearing volcanogenic massive sulfide subtypes (felsic, mafic, and bimodal-mafic volcanogenic massive sulfide deposits)... 20
22. Comparison histograms of the presence of syn-mineral intrusions and silver-bearing volcanogenic massive sulfide subtypes (felsic, mafic, and bimodal-mafic volcanogenic massive sulfide deposits)... 21
23. Comparison histograms of the presence of post-mineral intrusions and silver-bearing volcanogenic massive sulfide subtypes (felsic, mafic, and bimodal-mafic volcanogenic massive sulfide deposits)... 21
24. World map showing the distribution of volcanogenic massive sulfide deposit subtypes. ...................... 26

Tables
1. Volcanogenic massive sulfide deposit subtypes mentioned in this paper. ................................................. 4
2. Grade and tonnage models of felsic, bimodal-mafic, and mafic volcanogenic massive sulfide deposits...6

Table 1. Volcanogenic massive sulfide deposit subtypes mentioned in this paper.

Table 2. Grade and tonnage models of felsic, bimodal-mafic, and mafic volcanogenic massive sulfide deposits.
[Tonnage is in millions of metric tons; Cu, Zn, and Pb grades are in percents; Au and Ag grades are in grams per metric ton]


Figure 24. World map showing the distribution of volcanogenic massive sulfide deposit subtypes.

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