『Abstract
Economic geology is a mixtum compositum of all geoscientific
disciplines focused on one goal, finding new mineral deposits
and enhancing their exploitation. The keystones of this mixtum
compositum are geology and mineralogy whose studies are centered
around the emplacement of the ore body and the development of
its minerals and rocks. In the present study, mineralogy and geology
act as x- and y-coordinates of a classification chart of mineral
resources called the “chessboard” ( or “spreadsheet”) classification
scheme. Magmatic and sedimentary lithologies rogether with tectonic
structures (1-D/pipes, 2-D/veins) are plotted along the x-axis
in the header of the spreadsheet diagram representing the columns
in this chart diagram. 63 commodity groups, encompassing minerals
and elements are plotted along the y-axis, forming the lines of
the spreadsheet. These commodities are subjected to a tripartite
subdivision into ore minerals, industrial minerals/rocks and gemstones/ornamental
stones.
Further information on the various types of mineral deposits,
as to the major ore and gangue minerals, the current models and
the mode of formation or when and in which geodynamic setting
these deposits mainly formed throughout the geological past may
be obtained from the text by simply using the code of each swposit
in the chart. This code can be created by combining the commodity
(lines) shown by numbers plus lower caps with the host rocks or
structure (columns) given by capital letters.
Each commodity has a small preface on the mineralogy and chemistry
and ends up with an outlook into its final use and the supply
situation of the raw material on a global basis, which may be
updated by the user through a direct link to database available
on the internet. In this case the study has been linked to the
commodity database of the US Geological Survey. The internal subdivision
of each commodity section corresponds to the common host rock
lithologies (magmatic, sedimentary, and metamorphic) and structures.
Cross sections and images illustrate the common ore types of each
commodity. Ore takes priority over the mineral. The minerals and
host rocks are listed by their chemical and mineralogical compositions,
respectively, separated from the text but supplemented with cross-references
to the columns and lines, where they prevalently occur.
A metallogenetic-geodynamic overview is given at the bottom of
each column in the spreadsheet. It may be taken as the “sum” or
the “mean” of a number of geodynamic models and ideas put forward
by the various researchers for all the deposits pertaining to
a certain clan of lithology or structure. This classical or conservative
view of metallotexts related to the common plate tectonic settings
is supplemented by an approach taken for the first time for such
a number of deposits, using the concepts of sequence stratigraphy.
This paper, so as to say, is a “launch pad” for a new mindset
in metallogenesis rather than the final result. The relationship
supergene-hypogene and syngenetic-epigenetic has been the topic
of many studies for ages but to keep them as separate entities
is often unworkable in practice, especially in the so-called epithermal
or near-surface/shallow deposits. Vein-type and stratiform ore
bodies are generally handled also very differently. To get these
different structural elements (space), and various mineralizing
processes (time) together and to allow for a forward modeling
in mineral exploration, architectural elements of sequence stratigraphy
are adapted to mineral resources. Deposits are geological bodies
which need accommodation space created by the environment of formation
and the tectonic/geodynamic setting through time. They are controlled
by horizontal to subhorizontal reference planes and/or vertical
structures. Prerequisites for the deposits to evolve are thermal
and/or mechanical gradients. Thermal energy is for most of the
settings under consideration deeply rooted in the mantle. A perspective
ob how this concept might work is given in the text by a pilot
project on mineral deposits in Central Europe and in the spreadsheet
classification scheme by providing a color-coded categorization
into
1. mineralization mainly related to planar architectural elements,
e.g. sequence boundaries subaerial and unconformities
2. mineralization mainly related to planar architectural elements,
e.g. sequence boundaries submarine, transgressive surfaces and
maximum flooding zones/surfaces)
3. mineralization mainly controlled by system tracts (lowstand
system tracts transgressive system tracts, highstand system tracts)
4. mineralization of subvolcanic or intermediate level to be correlated
with the architectural elements of basin evolution
5. mineralization of deep level to be correlated with the deep-seated
structural elements.
There are several squares on the chessboard left blank mainly
for lack of information on sequence stratigraphy of mineral deposits.
This method has not found many users yet in mineral exploration.
This review is designed as an “inreractive paper” open, for amendments
in the electronic spreadsheet version and adjustable to the needs
and wants of application, research and training in geosciences.
Metamorphic host rock lithologies and commodities are addressed
by different color codes in the chessboard classification scheme.
Keywords: economic geology; mineral deposits; geology; mineralogy;
classification scheme; spreadsheet』
Contents
1. Introduction
1.1. Mineral deposits and economic geology
1.2. Classification of mineral deposits through time
2. The “chessboard” (spreadsheet) classification scheme of mineral
deposits
2.1. The principles of the “chessboard” (spreadsheet) classification
scheme
2.2. The host of mineral deposits
2.2.1. Magmatic host rocks
2.2.2. Ore-bearing structures
2.2.3. Sedimentary host rocks
2.2.4. Organic material and special host rocks
2.3. Type of commodity (inorganic raw material)
2.3.1. Ore minerals
2.3.2. Industrial minerals and rocks
2.3.3. Gemstones nd ornamental stones
2.4. Mineralizing processes
3. Chromium
3.1. Chemistry and mineralogy
3.2. Magmatic chromium deposits
3.3. Sedimentary chromium deposits
3.4. Metamorphic chromium (gemstone) deposit
3.5. Chromium supply and use
4. Nickel
4.1. Chemistry and mineralogy
4.2. Magmatic nickel deposits
4.3. Structure-related nickel deposits
4.4. Sedimentary nickel deposits
4.5. Nickel supply and use
5. Cobalt
5.1. Chemistry and mineralogy
5.2. Cobalt deposits
5.3. Cobalt supply and use
6. Platinum group elements (PGE)
6.1. Chemistry and mineralogy
6.2. Magmatic platinum-group-element deposits
6.3. Structure-related platinum-group-element deposits
6.4. Sedimentary platinum-group-element deposits
6.5. Platinum-group-element supply and use
7. Titanium
7.1. Chemistry and mineralogy
7.2. Magmatic titanium deposits
7.3. Structure-related titanium deposits
7.4. Sedimentary titanium deposits
7.5. Metamorphic titanium deposits
7.6. Titanium supply and use
8. Vanadium
8.1. Chemistry and mineralogy
8.2. Magmatic vanadium deposits
8.3. Sedimentary vanadium deposits
8.4. Vanadium supply and use
9. Iron
9.1. Chemistry and mineralogy
9.2. Magmatic iron deposits
9.3. Structure-related iron deposits
9.4. Sedimentary iron deposits
9.5. Metamorphic iron deposits
10. Manganese
10.1. Chemistry and mineralogy
10.2. Magmatic manganese deposits
10.3. Structure-related manganese deposits
10.4. Sedimentary manganese deposits
10.5. Metamorphic manganese deposits
10.6. Manganese supply and use
11. Copper
11.1. Chemistry and mineralogy
11.2. Magmatic copper deposits
11.3. Structure-bound copper deposits
11.4. Sedimentary copper deposits
11.5. Copper supply and use
12. Selenium and tellurium
12.1. Chemistry, mineralogy and economic geology of selenium
12.2. Chemistry, mineralogy and economic geology of tellurium
13. Molybdenum and rhenium
13.1. Chemistry and mineralogy of molybdenum
13.2. Magmatic molybdenum deposits
13.3. Sedimentary molybdenum and rhenium deposits
13.4. Molybdenum and rhenium supply and use
14. Tin and tungsten
14.1. Chemistry and mineralogy
14.2. Magmatic tin and tungsten deposits
14.3. Structure-bound tungsten deposits
14.4. Sedimentary tin and tungsten deposits
14.5. Supply and use of tin and tungsten
15. Niobium-, tantalum- and scandium
15.1. Chemistry and mineralogy
15.2. Magmatic niobium-, tantalum- and scandium deposits
15.3. Sedimentary niobium- and tantalum deposits
15.4. Supply and use of niobium and tantalum
16. Beryllium
16.1. Beryllium chemistry and mineralogy
16.2. Magmatic beryllium deposits
16.3. Structure-bound beryllium deposits
16.4. Sedimentary beryllium deposits
16.5. Metamorphic beryllium deposits
16.6. Supply and use of beryllium
17. Cesium, lithium and rubidium
17.1. Chemistry and mineralogy of cesium and lithium
17.2. Magmatic cesium-, lithium and rubidium deposits
17.3. Cesium and lithium sedimentary deposits
17.4. Cesium and lithium supply
18. Lead, zinc, germanium, indium, cadmium and silver
18.1. Chemistry and mineralogy of lead, zinc, germanium,
indium, cadmium, and silver
18.2. Magmatic lead-zinc deposits
18.3. Structure-bound lead-zinc deposits
18.4. Sedimentary lead-zinc deposits
18.5. Metamorphic lead-zinc deposits
18.6. Silver deposits sensu strico
18.7. Lead, zinc, germanium, indium, cadmium, and silver supply
18.7.1. Past and present of mining and metallurgy of lead
18.7.2. Past and present of mining and metallurgy of zinc
18.7.3. Final use of germanium, indium and cadmium
18.7.4. Final use of silver
19. Bismuth
19.1. Chemistry and mineralogy of bismuth
19.2. Deposits of bismuth
19.3. Final use of bismuth
20. Gold
20.1. Chemistry and mineralogy of gold
20.2. Magmatic gold deposits
20.3. Structure-bound gold deposits
20.4. Sedimentary gold deposits
20.5. Metamorphic gold deposits
20.6. Gold supply and use
21. Antimony, arsenic and thallium
21.1. Chemistry and mineralogy of antimony, arsenic and thallium
21.2. Antimony deposits
21.2.1. Magmatic antimony deposits
21.2.2. Structure-bound antimony deposits
21.2.3. Sedimentary antimony deposits
21.3. Arsenic deposits
21.4. Thallium deposits
21.5. Antimony, arsenic, thallium suply and use
21.5.1. Antimony
21.5.2. Arsenic
21.5.3. Thallium
22. Mercury
22.1. Chemistry and mineralogy of mercury
22.2. Magmatic mercury deposits
22.3. Structure-bound mercury deposits
22.4. Sedimentary mercury deposits
22.5. Mercury supply and use
23. Rare Earth Elements (REE)
23.1. Chemistry and mineralogy of rare earth elements
23.2. Magmatic rare earth element deposits
23.3. Structure-bound rare earth element deposits
23.4. Sedimentary rare earth element deposits
23.5. Rare earth element supply and use
24. Uranium, thorium and radium
24.1. Chemistry and mineralogy of uranium and thorium
24.2. Uranium deposits
24.2.1. Magmatic uranium deposits
24.2.2. Structure-bound uranium deposits
24.2.3. Sedimentary uranium deposits
24.3. Thorium deposits
24.3.1. Magmatic thorium deposits
24.3.2. Structure-bound thorium deposits
24.3.3. Sedimentary thorium deposits
24.3.4. Uranium and thorium supply and use
25. Aluminum and gallium
25.1. Chemistry and mineralogy of aluminum and gallium
25.2. Magmatic aluminum deposits
25.3. Sedimentary aluminum deposits
25.4. Gallium deposits
25.5. Aluminum and gallium supply and use
26. Magnesium
26.1. Chemistry and mineralogy of magnesium
26.2. Magmatic magnesium deposits
26.3. Structure-bound magnesium deposits
26.4. Sedimentary magnesium deposits
26.5. Magnsium supply and use
27. Calcium
27.1. Chemistry and mineralogy of calcium
27.2. Magmatic calcium deposits
27.3. Structure-bound calcium deposits
27.4. Sedimentary calcium deposits
27.5. Metamorphic calcium deposits
27.6. Carbonate rocks supply and use
28. Boron
28.1. Chemistry and mineralogy of boron
28.2. Magmatic boron deposits
28.3. Sedimentary boron deposits
28.4. Metamorphic boron deposits
28.5. Boron supply and use
29. Sulfur and calcium sulfate
29.1. Chemistry and mineralogy of sulfur
29.2. Magmatic sulfur and sulfate deposits
29.3. Sedimentary sulfur and Ca sulfate deposits
29.4. Sulfur and calcium sulfate supply and use
30. Fluorine
30.1. Chemistry and mineralogy of fluorine
30.2. Magmatic fluorine deposits
30.3. Structure-bound fluorite and topaz deposits
30.4. Sedimentary fluorite and topaz deposits
30.5. Fluorine supply and use
31. Barium
31.1. Chemistry and mineralogy of barium
31.2. Magmatic barium deposits
31.3. Structure-bound barium deposits
31.4. Sedimentary barium deposits
31.5. Barium supply and use
32. Strontium
32.1. Chemistry and mineralogy of strontium
32.2. Magmatic strontium deposits
32.3. Structure-bound strontium deposits
32.4. Sedimentary strontium deposits
32.5. Strontium supply and use
33. Potassium, sodium, chlorine and bromine
33.1. Chemistry and mineralogy of potassium, sodium, chlorine
and bromine
33.2. Sedimentary potassium, sodium, chlorine and bromine deposits
33.3. Sodium, potassium, chlorine and bromine supply and use
34. Nitrogen and iodine
34.1. Chemistry and mineralogy of nitrogen and iodine
34.2. Sedimentary nitrogen and iodine deposits
34.3. Economic consideration of nitrogen and iodine deposits
35. Sodium carbonate and -sulfate
35.1. Chemistry and mineralogy of sodium carbonate and -sulfate
35.2. Sedimentary sodium carbonate and -sulfate deposits
35.3. Sodium carbonate and -sulfate supply and use
36. Phosphorus
36.1. Chemistry and mineralogy of phosphorus
36.2. Magmatic phosphate deposits
36.3. Structure-bound phosphate deposits
36.4. Sedimentary phosphate deposits
36.5. Metamorphic phosphate deposits
36.6. Phosphate supply and use
37. Zirconium and hafnium
37.1. Che,istry and mineralogy of zirconium and hafnium
37.2. Magmatic, metamorphic and sedimentary zirconium (hafnium)
deposits
37.3. Zirconium (hafnium) supply and use
38. Silica
38.1. Chemistry and mineralogy of silica
38.2. Magmatic silica deposits
38.3. Sructure-bound silica deposits
38.4. Sedimentary silica deposits
38.5. Metamorphic silica deposits
38.6. Silica supply and use
39. Feldspar
39.1. Chemistry and mineralogy of feldspar
39.2. Magmatic feldspar deposits
39.3. Structure-bound feldspar deposits
39.4. Sedimentary feldspar deposits
39.5. Metamorphic feldspar deposits
39.6. Feldspar supply and use
40. Feldspathod
40.1. Chemistry and mineralogy of feldspathids
40.2. Magmatic feldspathoids deposits
40.3. Metamorphic feldspathoids deposits
40.4. Feldspathoids supply and use
41. Zeolites
41.1. Chemistry and mneralogy of zeolites
41.2. Magmatic zeolite deposits
41.3. Sedimentary zeolite deposits
41.4. Metamorphic zeolite deposits
41.5. Zeolite supply and use
42. Amphibole and asbestos
42.1. Chemistry and mineralogy of amphibole and asbestiform
minerals
42.2. Magmatic amphibole and asbestos deposits
42.3. Metamorphic amphibole and asbestos deposits
42.4. Amphibole and asbestos supply and use
43. Olivine and dunite
43.1. Chemistry and mineralogy of olivine minerals
43.2. Magmatic olivine and dunite deposits
43.3. Sedimentary olivine deposits
43.4. Metamorphic olivine and dunite deposits
43.5. Olivine and dunite supply and use
44. Pyroxene and inosilicates
44.1. Chemistry and mineralogy of pyroxene and pyroxenoid
44.2. Magmatic pyroxene and inosilicate deposits
44.3. Metamorphic pyroxene and inosilicate deposits
44.4. Pyroxene and inosilicate supply and use
45. Garnet
45.1. Chemistry and mineralogy of garnet-group minerals
45.2. Magmatic garnet deposits
45.3. Structure-bound garnet deposits
45.4. Sedimentary garnet deposits
45.5. Metamorphic garnet deposits
45.6. Garnet supply and use
46. Epidote-group minerals
46.1. Chemistry and mineralogy of epidote-group minerals
46.2. Magmatic epidote-group mineral deposits
46.3. Metamorphic epidote-group deposits
46.4. Epidote-group minerals supply and use
47. Sillimanite-group minerals
47.1. Chemistry and mineralogy of sillimanite group minerals
47.2. Magmatic deposits of sillimanite-group minerals
47.3. Structure-bound deposits of sillimanite-group minerals
and staurolite
47.4. Sedimentary deposits of sillimanite-group minerals and
staurolite
47.5. Metamorphic sillimanite-group deposits
47.6. Sillimanite-group minerals and staurolite supply and use
48. Corundum and spinel
48.1. Chemistry and mineralogy of corundum and spinel minerals
48.2. Magmatic deposits of corundum and spinel minerals
48.3. Sedimentary deposits of corundum and spinel minerals
48.4. Metamorphic deposits of corundum and spinel minerals
48.5. Corundum and spinel supply and use
49. Diamond
49.1. Chemistry and mineralogy of diamond
49.2. Magmatic deposits of diamonds
49.3. Sedimentary deposits of diamonds
49.4. Metamorphic deposits of diamonds
49.5. Diamond supply and use
50. Graphite
50.1. Chemistry and mineralogy of graphite
50.2. Magmatic deposits of graphite
50.3. Structure-bound graphite deposits
50.4. Sedimentary graphite deposits
50.5. Metamorphic graphite deposits
50.6. Graphite supply and use
51. Clay minerals
51.1. Chemistry and mineralogy of clay minerals
51.2. Magmatic deposits of clay minerals
51.2.1. Serpentine-kaolin
51.2.1.1. Serpentines
51.2.1.2. Kaolinite-group minerals and natural Si-Al complexes
51.2.2. Talc-pyrophyllite
51.2.2.1. Talc
51.2.2.2. Pyrophyllite
51.2.3. Smectite
51.2.4. Vermiculite
51.2.5. Mica
51.2.6. Chlorite
51.2.7. Sepiolite-palygorskite (hormites)
51.3. Sedimentary deposits of clay minerals
51.3.1. Serpentine-kaolin
51.3.1.1. Serpentines
51.3.1.2. Kaolin-group minerals and natural Si-Al complexes
51.3.2. Talc-pyrophyllite
51.3.3. Smectite
51.3.4. Vermiculite
51.3.5. Mica
51.3.6. Sepiolite-palygorskite (hormites)
51.4. Metamorphic deposits of clay minerals
51.4.1. Mica-)(chlorite)
51.4.2. Prehnite
51.4.3. Talc
51.4.4. Pyrophyllite
51.5. Clay minerals and phyllosilicate supply and use
52. Biological materials (“biominerals”)
52.1. Chemistry and mineralogy of biological materials
52.2. Ket and amber fdeposits
52.3. Supply and use of biological materials
53. Discussion
53.1. The columns; geodynamic setting and environment of
deposition
53.1.1. The ultrabasic magmatic clan
53.1.2. The basic magmatic clan
53.1.3. The intermediate and felsic magmatic clan
53.1.4. The alkaline magmatic clan and carbonatites with pegmatitic
plus aplitic derivative products
53.1.5. One-dimensional structures - pipes
53.1.6. Two-dimensional structures - veins
53.1.7. Duricrusts-regolith-vein like deposits
53.1.8. Coarse-grained clastic rocks
53.1.9. Fine-grained clastic rocks and massive rocks
53.1.10. Limestones
53.1.11. Evaporites
53.1.12. Special sedimentary rocks and carbon-bearing hosts
53.2. Metamorphogenetic mineral deposits
53.3. The spreadsheet correlation - bringing together the columns
and the lines
53.4. Sequence stratigraphy of epigenetic and diagenetic mineral
deposits in Central Europe
54. Conclusions - the importance of raw materials
Acknowledgements
References
Fig. 54.01. The “Commodity Snake” to illustrate the global production (in metric tonnes) of major mineral ra materials in 1983 (Lorenz, 1991). Dill(2010)による『The “chessboard” classification scheme of mineral deposits: Mineralogy and geology from aluminum to zirconium』から |