January 12, 2023 Dataset Open Access

Kirsch, Moritz; Mavroudi, Mary; Thiele, Samuel Thomas; Lorenz, Sandra; Tusa, Laura; Booysen, René; Herrmann, Erik; Fatihi, Ayoub; Möckel, Robert; Dittrich, Thomas; Gloaguen, Richard

Dublin Core Export

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<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:creator>Kirsch, Moritz</dc:creator>
  <dc:creator>Mavroudi, Mary</dc:creator>
  <dc:creator>Thiele, Samuel Thomas</dc:creator>
  <dc:creator>Lorenz, Sandra</dc:creator>
  <dc:creator>Tusa, Laura</dc:creator>
  <dc:creator>Booysen, René</dc:creator>
  <dc:creator>Herrmann, Erik</dc:creator>
  <dc:creator>Fatihi, Ayoub</dc:creator>
  <dc:creator>Möckel, Robert</dc:creator>
  <dc:creator>Dittrich, Thomas</dc:creator>
  <dc:creator>Gloaguen, Richard</dc:creator>
  <dc:date>2023-01-12</dc:date>
  <dc:description>As part of a project on the development of hyperspectral scanning to support geological mapping in underground mines, we acquired hyperspectral data from three adjacent outcrops of Sn-W-Li greisen rocks in the visitor’s mine of Zinnwald, Germany. The hyperspectral scans were pre-processed and then back-projected onto photogrammetric, three-dimensional digital outcrop models resulting in so-called "hyperclouds". The here presented hyperclouds from the three outcrops (Z1, Z2, and Z3) contain the following attributes:

ZX_Absorbance.ply
RGB colours: Mica/clay-zinnwaldite-topaz abundance based on absorbance (1 – hull-corrected reflectance) at 2200 nm (red), 2250 nm (green), and 2085 nm (blue)
Scalars: Absorbance at 2086.88 nm, 2160.69 nm, 2197.53 nm, 2209.8 nm, 2252.7 nm, and 2338.31 nm

ZX_Iron.ply
RGB colours: Composite (Fe3+ Fe2+ FeOH) iron index (red: 600/570 nm, green:(920 nm + 1650 nm)/ (1035 nm 1230 nm), blue: (2230 nm 2290 nm)/(2245 nm + 2260 nm)
Scalars: Fe3+ = 600/570 nm, Fe2+ = (920 nm + 1650 nm)/ (1035 nm + 1230 nm), FeOH = (2230 nm + 2290 nm)/(2245 nm + 2260 nm)

ZX_MNF.ply
RGB colours: Minimum noise fraction false colour (red: band 4, green: band 7, blue: band 5)
Scalars: Minimum noise fraction bands 4, 7, 5)

ZX_RGB_mineralogy_Li.ply
RGB colours: True colour RGB from photogrammetric outcrop model
Scalars: Mineral abundances derived by combining sample mineralogy from quantitative XRD measurements and hyperspectral unmixing approaches: Quartz/Feldspar, Zinnwaldite, Muscovite/Illite, Kaolinite, Topaz, Lithium (by multiplying the zinnwaldite abundance by its average lithium content of 1.7%)</dc:description>
  <dc:identifier>https://rodare.hzdr.de/record/2078</dc:identifier>
  <dc:identifier>10.14278/rodare.2078</dc:identifier>
  <dc:identifier>oai:rodare.hzdr.de:2078</dc:identifier>
  <dc:relation>url:https://www.hzdr.de/publications/Publ-36215</dc:relation>
  <dc:relation>url:https://www.hzdr.de/publications/Publ-37299</dc:relation>
  <dc:relation>doi:10.14278/rodare.2077</dc:relation>
  <dc:relation>url:https://rodare.hzdr.de/communities/rodare</dc:relation>
  <dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
  <dc:rights>https://creativecommons.org/licenses/by/4.0/legalcode</dc:rights>
  <dc:subject>hyperspectral</dc:subject>
  <dc:subject>underground mining</dc:subject>
  <dc:subject>point cloud</dc:subject>
  <dc:subject>lithium</dc:subject>
  <dc:subject>mineral mapping</dc:subject>
  <dc:title>Data publication: Underground hyperspectral outcrop scanning for automated mine-face mapping — the Lithium deposit of Zinnwald/Cínovec</dc:title>
  <dc:type>info:eu-repo/semantics/other</dc:type>
  <dc:type>dataset</dc:type>
</oai_dc:dc>