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Mineral reflectance spectra and chemistry of 20 copper-bearing minerals

Cite as:

Koellner, Nicole; Koerting, Friederike; Horning, Marcel; Mielke, Christian; Altenberger, Uwe (2019): Mineral reflectance spectra and chemistry of 20 copper-bearing minerals. V. 2.0. GFZ Data Services. https://doi.org/10.5880/GFZ.1.4.2019.003

Status

I   N       R   E   V   I   E   W : Koellner, Nicole; Koerting, Friederike; Horning, Marcel; Mielke, Christian; Altenberger, Uwe (2019): Mineral reflectance spectra and chemistry of 20 copper-bearing minerals. V. 2.0. GFZ Data Services. https://doi.org/10.5880/GFZ.1.4.2019.003

Abstract

The data set contains mineral chemical analyses of 20 copper-bearing minerals and their corresponding hyperspectral reflectance spectra. The hyperspectral data were acquired with the HySpex system in a range of 414 – 2498 nm and are presented in a spectral library. The resulting reflectance data are scaled from 0 - 10000. Detailed information about the mineral specimen, sample area and mineral chemistry is presented in the data sheets below. The spectral library presented here is part of a larger collection of spectral libraries including samples from rare-earth minerals, rare-earth-oxides (Koerting et al., 2019a, https://doi.org/10.5880/GFZ.1.4.2019.004) and field surface samples from a copper-gold-pyrite mine in the Republic of Cyprus (Koerting et al., 2019b, https://doi.org/10.5880/GFZ.1.4.2019.005) and are fully described in Koerting et al. (2020). These libraries aim to give a spectral overview of important resources and ore mineralization.

Twenty samples from the collection of the University of Potsdam (UP) and the Federal Institute for Geosciences and Natural Resources (BGR) were hyperspectrally measured with the HySpex system and mineral-chemically analysed by using a scanning electron microscope (SEM) and electron probe microanalyzer (EPMA).

Additional Information

Version 2.0 (14 December 2020): completely restructured Technical Report and data files according to the review recommendations of the related article in Earth System Science Data (ESSD).

Details:
• New title of the data publication
• addition of spectra names in the table that lists the sample info
• change of file names and titles according to reviewer’s comments as followed:
(1) Spectral library "GFZ_HySpex_copper_minerals": (a) correction of the spectral name for the unknown spectrum from "?" to "unknown" in the ENVI-standard + .hdr file and the .txt file; (b) splitting up the plot in two parts to make it easier to comprehend
(2) file "copper_bearing_minerals_hyperspectral_parameters.xlsx": change to "copper-bearing", change of filename and title
(3) file "copper_bearing_minerals_geochemistry.PDF": change to "copper-bearing", change of filename and title, removal of "H2O missing" comment
(4) file "copper_bearing_minerals_EPMA_oxides.txt": change to "copper-bearing" and changes of EMPA to EPMA changed in the file name and the table header as requested by the reviewer.
(5) file "copper_bearing_minerals_mount_SEM_EPMA.png": change of photo labels for a better understanding
(6) file "copper_bearing_minerals_EPMA_elements.txt": file name and table header changed to "EPMA_elements" instead of "EMPA_ore" as requested by the reviewer (only the file name changed).

Authors

  • Koellner, Nicole;GFZ German Research Centre for Geosciences, Potsdam, Germany
  • Koerting, Friederike;GFZ German Research Centre for Geosciences, Potsdam, Germany
  • Horning, Marcel;GFZ German Research Centre for Geosciences, Potsdam, Germany
  • Mielke, Christian;GFZ German Research Centre for Geosciences, Potsdam, Germany
  • Altenberger, Uwe;University Potsdam, Potsdam, Germany

Contact

  • Koellner, Nicole; GFZ German Research Centre for Geosciences, Potsdam, Germany;

Keywords

copper, spectral library, hyperspectral, geochemical analyses, copper minerals, scanning electron microscope, SEM, energy dispersive X-ray spectrometer, EDX, electron microprobe analyzer, EMPA

GCMD Science Keywords

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