PD Dr. Manuel Keith

Lehrstuhl für Endogene Geodynamik

Wissenschaftliche Mitarbeitende

Kontakt

E-Mail: manuel.keith@fau.de

FAU-Nachwuchsgruppenleiter: Anreicherung kritischer Metalle in der Erdkruste

Tel: +49 (0)9131 85 26064
Fax: +49 (0)9131 85 29295

Forschungsgebiet

Kritische Metalle sind in der Erdkruste selten und positive Anomalien dieser Elemente treten nur in geographisch begrenzten Gebieten auf. Die breite wirtschaftliche Anwendung dieser Elemente in der Elektronik und den erneuerbaren Energien verleiht ihnen eine strategische Bedeutung. Die Versorgung mit diesen kritischen und energie-kritischen Elementen für die Energiewende wird jedoch zu einer immer größeren Herausforderung. Daher ist es wichtig neue Konzepte zu entwickeln, die die Quellen, sowie die Fraktionierungs- und Ausfällungsprozesse kritischer Elemente definieren, die letztlich die Anreicherung dieser seltenen Rohstoffe in magmatisch-hydrothermalen Systemen der Erdkruste ermöglichen.

Viele dieser Metalle und Halbmetalle sind an hydrothermale Sulfide wie Pyrit gebunden und treten dabei entweder als Substitutionen im Kristallgitter oder als Einschlüsse auf der Mikro- und Nanoebene auf. Über die genauen Einbaumechanismen für viele dieser Elemente ist jedoch immer noch wenig bekannt, obwohl ein entsprechendes Prozessverständnis entscheidend dazu beitragen könnte den Abbau und die Aufbereitung von mineralischen Rohstoffen nachhaltiger zu gestalten.

Hydrothermal Economic Resources in Magmatic EnvironmentS (HERMES) (PI, DFG-ANR)

Continuation request of project – Sources and enrichment processes of metal(loid)s in submarine back-arc hydrothermal systems: A combined Se and multiple S isotope approach (PI, DFG IODP priority programme)

In-situ element and isotope characteristics of accessory minerals to fingerprint orogenic lode gold ore formation in the Tien Shan belt (Co-PI, CSC)

Critical elements for the energy and climate transition – local sustainability and global development of georesources (Co-PI, DKN-DFG)

Action for Research and Teaching Mineral exploration Inclusive School_2 (ARTeMIS_2) (Co-PI, ERASMUS+)

Volcanogenic massive sulphide deposits: Economic Co-Ni resources through hydrothermal and metamorphic interaction (PI, FAU)

Multi-scale approach of critical, rare and precious metal enrichment in pyrite from the Pefka Cu-Au-Te-In-Se deposit, Rhodopes, NE Greece (PI, AuScope Access Funding)

Trace element and isotope signatures in porphyry minerals to fingerprint gold ore formation (Co-PI, CSC)

Crystal chemistry of Te in arsenian pyrite: Economic and environmental implications (Co-PI, ESRF)

Action for Research and Teaching Mineral exploration Inclusive School (ARTeMIS) (Co-PI, ERASMUS+)

Sources and enrichment processes of metal(loid)s in submarine back-arc hydrothermal systems: A combined Se and multiple S isotope approach (PI, DFG IODP priority programme)

Immiscible sulphide liquids: Insights into chalcophile element fractionation processes in the oceanic crust (PI, DFG IODP priority programme)

Magmatic and hydrothermal prerequisites for porphyry-epithermal mineralisation in continental volcanic arcs, Thrace, NE Greece (PI, DFG DOME priority programme)

Tellurium in natural and synthetic pyrite: Ore-formation and economic implication (PI, DFG individual research grant)

An accessory mineral approach to understanding post-subduction magmatism and mineralisation (Co-PI, NERC UK)

2025

Abiven B., Tarantola A., Richard A., Keith M., Melfos V., Voudouris P.:
Effect of out-of-equilibrium crystallization and fluid-assisted dynamic recrystallization on Ti-in-quartz thermometry in porphyry-epithermal deposits: Insights from Pagoni Rachi (NE Greece)
In: Lithos 512-513 (2025), Art.Nr.: 108134
ISSN: 0024-4937
DOI: 10.1016/j.lithos.2025.108134
Lehmann W., Keith M., Regelous M., Klemd R., Kutzschbach M.:
Chalcophile element fractionation processes in the oceanic crust: Evidence from trace elements in magmatic sulphides
In: Lithos 500-501 (2025), Art.Nr.: 107978
ISSN: 0024-4937
DOI: 10.1016/j.lithos.2025.107978
Lehmann W., Regelous M., Haase K., Keith M., Woelki D.:
Geochemistry of the sheeted dyke complex, Troodos Ophiolite (Cyprus): Evidence for the magmatic evolution during subduction initiation
In: Chemical Geology 681 (2025), Art.Nr.: 122743
ISSN: 0009-2541
DOI: 10.1016/j.chemgeo.2025.122743
Zhao G., Zhai D., Keith M., Voudouris P., Tombros S., Zhang H., Liu J.:
Sulfur and He-Ar isotopic constraints on the origin of alkalic-type epithermal Au-Ag-Te deposits: Insights from the Golden Sunlight deposit, Montana, USA
In: Ore Geology Reviews 176 (2025), Art.Nr.: 106435
ISSN: 0169-1368
DOI: 10.1016/j.oregeorev.2024.106435
Zhao Q., Zhai D., Keith M., Voudouris P., Tombros S., Liu J.:
Deciphering hydrothermal Te-Bi bonanza mineralization: In situ trace element and sulfur isotope evidence from the Dashuigou deposit, SW China
In: Mineralium Deposita (2025)
ISSN: 0026-4598
DOI: 10.1007/s00126-025-01401-8

2024

Falkenberg J., Keith M., Haase K., Klemd R., Kutzschbach M., Grosche A., Scicchitano MR., Strauss H., Kim J.:
Pyrite trace element proxies for magmatic volatile influx in submarine subduction-related hydrothermal systems
In: Geochimica Et Cosmochimica Acta 373 (2024), S. 52-67
ISSN: 0016-7037
DOI: 10.1016/j.gca.2024.03.026
Falkenberg J., Keith M., Melfos V., Hohl M., Haase K., Voudouris P., Höß A., Wenske J., Klemd R., Beier C., Kutzschbach M., Strauss H.:
Insights into fluid evolution and Re enrichment by mineral micro-analysis and fluid inclusion constraints: Evidence from the Maronia Cu-Mo ± Re ± Au porphyry system in NE Greece
In: Mineralium Deposita (2024)
ISSN: 0026-4598
DOI: 10.1007/s00126-024-01273-4
Grosche A., Keith M., Klemd R., Strauss H., Rosca C., König S.:
Temperature-controlled Se-S isotope fractionation during seawater mixing and sulfide precipitation in black smoker chimneys
In: Geochimica Et Cosmochimica Acta 372 (2024), S. 13-27
ISSN: 0016-7037
DOI: 10.1016/j.gca.2024.03.007
Hong J., Zhai D., Keith M.:
Quartz texture and the chemical composition fingerprint of ore-forming fluid evolution at the Bilihe porphyry Au deposit, NE China
In: American Mineralogist 109 (2024), S. 1203-1219
ISSN: 0003-004X
DOI: 10.2138/am-2022-8840
Hong J., Zhai D., Keith M., Zhao Q., Liu J.:
Trace Element and In Situ O–Nd Isotope Signatures of Apatite from the Bilihe Porphyry Au-Only Deposit: Magmatic Constraints on Au Mineralization
In: Journal of Petrology 65 (2024), Art.Nr.: egae109
ISSN: 0022-3530
DOI: 10.1093/petrology/egae109
Höß A., Haase K., Keith M., Klemd R., Melfos V., Gerlach L., Pelloth F., Falkenberg J., Voudouris P., Strauss H., Baker T., Tarantola A.:
Magmatic and hydrothermal evolution of the Skouries Au-Cu porphyry deposit, northern Greece
In: Ore Geology Reviews 173 (2024), Art.Nr.: 106233
ISSN: 0169-1368
DOI: 10.1016/j.oregeorev.2024.106233
Kutzschbach M., Dunkel F., Kusebauch C., Schiperski F., Börner F., Drake H., Klimm K., Keith M.:
Arsenic-poor fluids promote strong As partitioning into pyrite
In: Geochimica Et Cosmochimica Acta 376 (2024), S. 37-53
ISSN: 0016-7037
DOI: 10.1016/j.gca.2024.05.027

2023

Börner F., Keith M., Fougerouse D., Macauley C., Felfer P., Yokosawa T., Apeleo Zubiri B., Spiecker E.:
Between defects and inclusions: The fate of tellurium in pyrite
In: Chemical Geology 635 (2023), S. 121633
ISSN: 0009-2541
DOI: 10.1016/j.chemgeo.2023.121633
Börner F., Keith M., Fougerouse D., Macauley C., Felfer P., Yokosawa T., Apeleo Zubiri B., Spiecker E.:
Between defects and inclusions: The fate of tellurium in pyrite
In: Chemical Geology 635 (2023), Art.Nr.: 121633
ISSN: 0009-2541
DOI: 10.1016/j.chemgeo.2023.121633
Grosche A., Klemd R., Denkel K., Keith M., Haase K., Voudouris PC., Alfieris D., Wiedenbeck M.:
Sources, transport, and deposition of metal(loid)s recorded by sulfide and rock geochemistry: constraints from a vertical profile through the epithermal Profitis Ilias Au prospect, Milos Island, Greece
In: Mineralium Deposita (2023)
ISSN: 0026-4598
DOI: 10.1007/s00126-023-01170-2
Keith M., Hayes SM., Ciobanu CL., Fougerouse D., Reich M.:
Editorial: Micro-to nano-analytical challenges towards trace element characterization of ore minerals: new perspectives and applications for sustainable georesources
In: Frontiers in Earth Science 11 (2023), Art.Nr.: 1227737
ISSN: 2296-6463
DOI: 10.3389/feart.2023.1227737

2022

Börner F., Keith M., Bücker J., Voudouris P., Klemd R., Haase K., Kutzschbach M., Schiperski F.:
In-situ trace element and S isotope systematics in pyrite from three porphyry-epithermal prospects, Limnos Island, Greece
In: Frontiers in Earth Science 10 (2022), Art.Nr.: 916107
ISSN: 2296-6463
DOI: 10.3389/feart.2022.916107
Falkenberg J., Keith M., Haase K., Sporer C., Bach W., Klemd R., Strauss H., Storch B., Peters C., Rubin KH., Anderson MO.:
Spatial Variations in Magmatic Volatile Influx and Fluid Boiling in the Submarine Hydrothermal Systems of Niuatahi Caldera, Tonga Rear-Arc
In: Geochemistry Geophysics Geosystems 23 (2022)
ISSN: 1525-2027
DOI: 10.1029/2021GC010259
Keith M., Haase K., Chivas AR., Klemd R.:
Phase separation and fluid mixing revealed by trace element signatures in pyrite from porphyry systems
In: Geochimica Et Cosmochimica Acta 329 (2022), S. 185-205
ISSN: 0016-7037
DOI: 10.1016/j.gca.2022.05.015

2021

Börner F., Keith M., Smith DJ., Barry TL., Neumann T., Klemd R.:
Fingerprinting fluid evolution by trace elements in epithermal pyrite, Vatukoula Au-Te deposit, Fiji
In: Ore Geology Reviews 137 (2021), Art.Nr.: 104314
ISSN: 0169-1368
DOI: 10.1016/j.oregeorev.2021.104314
Falkenberg J., Keith M., Haase K., Bach W., Klemd R., Strauss H., Yeo IA., Rubin KH., Storch B., Anderson MO.:
Effects of fluid boiling on Au and volatile element enrichment in submarine arc-related hydrothermal systems
In: Geochimica Et Cosmochimica Acta (2021)
ISSN: 0016-7037
DOI: 10.1016/j.gca.2021.05.047
Keith M., Haase K., Häckel F., Schwarz-Schampera U., Klemd R., Hannington M., Strauss H., McConachy T., Anderson M.:
Trace element fractionation and precipitation in submarine back-arc hydrothermal systems, Nifonea caldera, New Hebrides subduction zone
In: Ore Geology Reviews 135 (2021), Art.Nr.: 104211
ISSN: 0169-1368
DOI: 10.1016/j.oregeorev.2021.104211
Klose L., Keith M., Hafermaas D., Kleint C., Bach W., Diehl A., Wilckens F., Peters C., Strauss H., Klemd R., van Geldern R., Haase K., Koschinsky A.:
Trace Element and Isotope Systematics in Vent Fluids and Sulphides From Maka Volcano, North Eastern Lau Spreading Centre: Insights Into Three-Component Fluid Mixing
In: Frontiers in Earth Science 9 (2021)
ISSN: 2296-6463
DOI: 10.3389/feart.2021.776925
Nestmeyer M., Keith M., Haase K., Klemd R., Voudouris P., Schwarz-Schampera U., Strauss H., Kati M., Magganas A.:
Trace Element Signatures in Pyrite and Marcasite From Shallow Marine Island Arc-Related Hydrothermal Vents, Calypso Vents, New Zealand, and Paleochori Bay, Greece
In: Frontiers in Earth Science 9 (2021)
ISSN: 2296-6463
DOI: 10.3389/feart.2021.641654
Schaarschmidt A., Haase K., Klemd R., Keith M., Voudouris PC., Alfieris D., Strauss H., Wiedenbeck M.:
Boiling effects on trace element and sulfur isotope compositions of sulfides in shallow-marine hydrothermal systems: Evidence from Milos Island, Greece
In: Chemical Geology 583 (2021), S. 120457
ISSN: 0009-2541
DOI: 10.1016/j.chemgeo.2021.120457
Voudouris P., Kati M., Magganas A., Keith M., Valsami-Jones E., Haase K., Klemd R., Nestmeyer M.:
Arsenian pyrite and cinnabar from active submarine nearshore vents, paleochori bay, milos island, Greece
In: Minerals 11 (2021), S. 1-25
ISSN: 2075-163X
DOI: 10.3390/min11010014
Voudouris P., Repstock A., Spry PG., Frenzel M., Mavrogonatos C., Keith M., Tarantola A., Melfos V., Tombros S., Zhai D., Cook NJ., Ciobanu CL., Schaarschmidt A., Rieck B., Kolitsch U., Falkenberg J.:
Physicochemical constraints on indium-, tin-, germanium-, gallium-, gold-, and tellurium-bearing mineralizations in the Pefka and St Philippos polymetallic vein- and breccia-type deposits, Greece
In: Ore Geology Reviews (2021), S. 104348
ISSN: 0169-1368
DOI: 10.1016/j.oregeorev.2021.104348

2020

Keith M., Smith DJ., Doyle K., Holwell DA., Jenkin GR., Barry TL., Becker J., Rampe J.:
Pyrite chemistry: A new window into Au-Te ore-forming processes in alkaline epithermal districts, Cripple Creek, Colorado
In: Geochimica Et Cosmochimica Acta 274 (2020), S. 172-191
ISSN: 0016-7037
DOI: 10.1016/j.gca.2020.01.056
Martin AJ., Keith M., Parvaz DB., McDonal I., Boyce AJ., McFall KA., Jenkin GRT., Strauss H., MacLeod CJ.:
Effects of magmatic volatile influx in mafic VMS hydrothermal systems: evidence from the Troodos ophiolite, Cyprus
In: Chemical Geology (2020), S. 119325
ISSN: 0009-2541
DOI: 10.1016/j.chemgeo.2019.119325

2019

Holwell DA., Fiorentini M., McDonald I., Lu Y., Giuliani A., Smith DJ., Keith M., Locmelis M.:
A metasomatized lithospheric mantle control on the metallogenic signature of post-subduction magmatism
In: Nature Communications 10 (2019), Art.Nr.: 3511
ISSN: 2041-1723
DOI: 10.1038/s41467-019-11065-4
Martin AJ., Keith M., Mcdonald I., Haase K., Mcfall KA., Klemd R., Macleod CJ.:
Trace element systematics and ore-forming processes in mafic VMS deposits: Evidence from the Troodos ophiolite, Cyprus
In: Ore Geology Reviews 106 (2019), S. 205-225
ISSN: 0169-1368
DOI: 10.1016/j.oregeorev.2019.01.024
Martin AJ., Mcdonald L., Mcfall KA., Macleod CJ., Keith M., Jenkin GRT., Boyce AJ.:
Tellurium and selenium systematics in mafic VMS from Cyprus: mineral, mound and regional scale controls
15th SGA Biennial Meeting on Life with Ore Deposits on Earth (Glasgow, 27. August 2019 - 30. August 2019)
In: LIFE WITH ORE DEPOSITS ON EARTH, PROCEEDINGS OF THE 15TH SGA BIENNIAL MEETING, 2019, VOLS 1-4, GENEVA 4: 2019
Mavrogonatos C., Voudouris P., Berndt J., Klemme S., Zaccarini F., Spry PG., Melfos V., Tarantola A., Keith M., Klemd R., Haase K.:
Trace elements in magnetite from the pagoni rachi porphyry prospect, NE Greece: Implications for ore genesis and exploration
In: Minerals 9 (2019), Art.Nr.: 725
ISSN: 2075-163X
DOI: 10.3390/min9120725

2018

Keith M., Haase K., Klemd R., Smith D., Schwarz-Schampera U., Bach W.:
Constraints on the source of Cu in a submarine magmatic-hydrothermal system, Brothers volcano, Kermadec island arc
In: Contributions To Mineralogy and Petrology 173 (2018)
ISSN: 0010-7999
DOI: 10.1007/s00410-018-1470-5
Keith M., Smith DJ., Jenkin GRT., Holwell DA., Dye MD.:
A review of Te and Se systematics in hydrothermal pyrite from precious metal deposits: Insights into ore-forming processes
In: Ore Geology Reviews 96 (2018), S. 269-282
ISSN: 0169-1368
DOI: 10.1016/j.oregeorev.2017.07.023

2017

Keith M., Haase K., Klemd R., Schwarz-Schampera U., Franke H.:
Systematic variations in magmatic sulphide chemistry from mid-ocean ridges, back-arc basins and island arcs
In: Chemical Geology 451 (2017), S. 67-77
ISSN: 0009-2541
DOI: 10.1016/j.chemgeo.2016.12.028
Smith DJ., Naden J., Jenkin GRT., Keith M.:
Hydrothermal alteration and fluid pH in alkaline-hosted epithermal systems
In: Ore Geology Reviews 89 (2017), S. 772-779
ISSN: 0169-1368
DOI: 10.1016/j.oregeorev.2017.06.028

2016

Keith M., Haase K., Klemd R., Krumm S., Strauss H.:
Systematic variations of trace element and sulfur isotope compositions in pyrite with stratigraphic depth in the Skouriotissa volcanic-hosted massive sulfide deposit, Troodos ophiolite, Cyprus
In: Chemical Geology 423 (2016), S. 7-18
ISSN: 0009-2541
Keith M., Häckel F., Haase K., Schwarz-Schampera U., Klemd R.:
Trace element systematics of pyrite from submarine hydrothermal vents
In: Ore Geology Reviews 72 (2016), S. 728-745
ISSN: 0169-1368
DOI: 10.1016/j.oregeorev.2015.07.012

2014

Freund S., Haase K., Keith M., Beier C., Garbe-Schönberg D.:
Constraints on the formation of geochemically variable plagiogranite intrusions in the Troodos Ophiolite, Cyprus
In: Contributions To Mineralogy and Petrology 167 (2014), S. 1-22
ISSN: 0010-7999
DOI: 10.1007/s00410-014-0978-6
Keith M., Haase K., Schwarz-Schampera U., Klemd R., Petersen S., Bach W.:
Effects of temperature, sulfur, and oxygen fugacity on the composition of sphalerite from submarine hydrothermal vents
In: Geology 42 (2014), S. 699-702
ISSN: 0091-7613
DOI: 10.1130/G35655.1
Regelous M., Haase K., Freund S., Keith M., Weinzierl C., Beier C., Brandl P., Endres T., Schmidt H.:
Formation of the Troodos Ophiolite at a triple junction: Evidence from trace elements in volcanic glass
In: Chemical Geology 386 (2014), S. 66-79
ISSN: 0009-2541
DOI: 10.1016/j.chemgeo.2014.08.006