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
{ "keywords": [ "hyperspectral", "underground mining", "point cloud", "lithium", "mineral mapping" ], "description": "<p>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:</p>\n\n<p>ZX_Absorbance.ply<br>\nRGB colours: Mica/clay-zinnwaldite-topaz abundance based on absorbance (1 – hull-corrected reflectance) at 2200 nm (red), 2250 nm (green), and 2085 nm (blue)<br>\nScalars: Absorbance at 2086.88 nm, 2160.69 nm, 2197.53 nm, 2209.8 nm, 2252.7 nm, and 2338.31 nm</p>\n\n<p>ZX_Iron.ply<br>\nRGB 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)<br>\nScalars: Fe3+ = 600/570 nm, Fe2+ = (920 nm + 1650 nm)/ (1035 nm + 1230 nm), FeOH = (2230 nm + 2290 nm)/(2245 nm + 2260 nm)</p>\n\n<p>ZX_MNF.ply<br>\nRGB colours: Minimum noise fraction false colour (red: band 4, green: band 7, blue: band 5)<br>\nScalars: Minimum noise fraction bands 4, 7, 5)</p>\n\n<p>ZX_RGB_mineralogy_Li.ply<br>\nRGB colours: True colour RGB from photogrammetric outcrop model<br>\nScalars: 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%)</p>", "license": "https://creativecommons.org/licenses/by/4.0/legalcode", "sameAs": [ "https://www.hzdr.de/publications/Publ-36215" ], "datePublished": "2023-01-12", "distribution": [ { "@type": "DataDownload", "contentUrl": "https://rodare.hzdr.de/api/files/25f87bb6-2acf-4e73-b205-0b985e599ac3/Z1_Absorbance.ply", "fileFormat": "ply" }, { "@type": "DataDownload", "contentUrl": "https://rodare.hzdr.de/api/files/25f87bb6-2acf-4e73-b205-0b985e599ac3/Z1_Iron.ply", "fileFormat": "ply" }, { "@type": "DataDownload", "contentUrl": "https://rodare.hzdr.de/api/files/25f87bb6-2acf-4e73-b205-0b985e599ac3/Z1_MNF.ply", "fileFormat": "ply" }, { "@type": "DataDownload", "contentUrl": "https://rodare.hzdr.de/api/files/25f87bb6-2acf-4e73-b205-0b985e599ac3/Z1_RGB_mineralogy_Li.ply", "fileFormat": "ply" }, { "@type": "DataDownload", "contentUrl": "https://rodare.hzdr.de/api/files/25f87bb6-2acf-4e73-b205-0b985e599ac3/Z2_Absorbance.ply", "fileFormat": "ply" }, { "@type": "DataDownload", "contentUrl": "https://rodare.hzdr.de/api/files/25f87bb6-2acf-4e73-b205-0b985e599ac3/Z2_Iron.ply", "fileFormat": "ply" }, { "@type": "DataDownload", "contentUrl": "https://rodare.hzdr.de/api/files/25f87bb6-2acf-4e73-b205-0b985e599ac3/Z2_RGB_mineralogy_Li.ply", "fileFormat": "ply" }, { "@type": "DataDownload", "contentUrl": "https://rodare.hzdr.de/api/files/25f87bb6-2acf-4e73-b205-0b985e599ac3/Z3_Absorbance.ply", "fileFormat": "ply" }, { "@type": "DataDownload", "contentUrl": "https://rodare.hzdr.de/api/files/25f87bb6-2acf-4e73-b205-0b985e599ac3/Z3_Iron.ply", "fileFormat": "ply" }, { "@type": "DataDownload", "contentUrl": "https://rodare.hzdr.de/api/files/25f87bb6-2acf-4e73-b205-0b985e599ac3/Z3_RGB_mineralogy_Li.ply", "fileFormat": "ply" } ], "url": "https://rodare.hzdr.de/record/2078", "identifier": "https://doi.org/10.14278/rodare.2078", "@id": "https://doi.org/10.14278/rodare.2078", "@context": "https://schema.org/", "name": "Data publication: Underground hyperspectral outcrop scanning for automated mine-face mapping \u2014 the Lithium deposit of Zinnwald/C\u00ednovec", "creator": [ { "@type": "Person", "@id": "https://orcid.org/0000-0003-1512-5511", "affiliation": "Helmholtz-Zentrum Dresden-Rossendorf, Helmholtz Institute Freiberg for Resource Technology, Freiberg, Germany", "name": "Kirsch, Moritz" }, { "@type": "Person", "affiliation": "National Technical University of Athens, School of Mining and Metallurgical Engineering, Greece", "name": "Mavroudi, Mary" }, { "@type": "Person", "@id": "https://orcid.org/0000-0003-4169-0207", "affiliation": "Helmholtz-Zentrum Dresden-Rossendorf, Helmholtz Institute Freiberg for Resource Technology, Freiberg, Germany", "name": "Thiele, Samuel Thomas" }, { "@type": "Person", "@id": "https://orcid.org/0000-0001-8464-2331", "affiliation": "Helmholtz-Zentrum Dresden-Rossendorf, Helmholtz Institute Freiberg for Resource Technology, Freiberg, Germany", "name": "Lorenz, Sandra" }, { "@type": "Person", "affiliation": "TheiaX GmbH, Freiberg, Germany", "name": "Tusa, Laura" }, { "@type": "Person", "@id": "https://orcid.org/0000-0002-5549-4090", "affiliation": "Helmholtz-Zentrum Dresden-Rossendorf, Helmholtz Institute Freiberg for Resource Technology, Freiberg, Germany", "name": "Booysen, Ren\u00e9" }, { "@type": "Person", "affiliation": "Helmholtz-Zentrum Dresden-Rossendorf, Helmholtz Institute Freiberg for Resource Technology, Freiberg, Germany", "name": "Herrmann, Erik" }, { "@type": "Person", "affiliation": "Helmholtz-Zentrum Dresden-Rossendorf, Helmholtz Institute Freiberg for Resource Technology, Freiberg, Germany", "name": "Fatihi, Ayoub" }, { "@type": "Person", "@id": "https://orcid.org/0000-0002-2583-6889", "affiliation": "Helmholtz-Zentrum Dresden-Rossendorf, Helmholtz Institute Freiberg for Resource Technology, Freiberg, Germany", "name": "M\u00f6ckel, Robert" }, { "@type": "Person", "affiliation": "Deutsche Lithium GmbH, Freiberg, Germany", "name": "Dittrich, Thomas" }, { "@type": "Person", "@id": "https://orcid.org/0000-0002-4383-473X", "affiliation": "Helmholtz-Zentrum Dresden-Rossendorf, Helmholtz Institute Freiberg for Resource Technology, Freiberg, Germany", "name": "Gloaguen, Richard" } ], "@type": "Dataset" }
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