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Slatecalculation – a practical tool for deriving norm minerals in the lowest-grade metamorphic pelites and roof slates

  • Roof and wall slates are fine-grained rocks with slaty cleavage, and it is often difficult to determine their mineral composition. A new norm mineral calculation called slatecalculation allows the determination of a virtual mineral composition based on full chemical analysis, including the amounts of carbon dioxide (CO2), carbon (C), and sulfur (S). Derived norm minerals include feldspars, carbonates, micas, hydro-micas, chlorites, ore-minerals, and quartz. The mineral components of the slate are assessed with superior accuracy compared to the petrographic analysis based on the European Standard EN 12326. The inevitable methodical inaccuracies in the calculations are limited and transparent. In the present paper, slates, shales, and phyllites from worldwide occurrences were examined. This also gives an overview of the rocks used for discontinuous roofing and external cladding.

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Author:Hans Wolfgang WagnerORCiD, Dieter Jung, Jean-Frank WagnerORCiD, Matthias Patrick Wagner
Parent Title (English):Minerals
Place of publication:Basel
Document Type:Article
Date of completion:2020/04/29
Date of publication:2020/04/29
Publishing institution:Universität Trier
Contributing corporation:The publication was funded by the Open Access Fund of Universität Trier and the German Research Foundation (DFG)
Release Date:2021/09/02
Tag:mineralogy; norm mineral calculation; phyllites; roof slates; shales
GND Keyword:Chemische Analyse; Dachschiefer; Kalkulationsverfahren; Mineralogie
Issue / no.:10/5
Number of pages:22
First page:1
Last page:22
Institutes:Fachbereich 6 / Raum- und Umweltwissenschaften
Dewey Decimal Classification:9 Geschichte und Geografie / 91 Geografie, Reisen / 910 Geografie, Reisen
Licence (German):License LogoCC BY: Creative-Commons-Lizenz 4.0 International

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