TY  - JOUR
A1  - Wagner, Hans Wolfgang
A1  - Jung, Dieter
A1  - Wagner, Jean-Frank
A1  - Wagner, Matthias Patrick
T1  - Slatecalculation – a practical tool for deriving norm minerals in the lowest-grade metamorphic pelites and roof slates
T2  - Minerals
N2  - 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.
KW  - mineralogy
KW  - roof slates
KW  - shales
KW  - phyllites
KW  - norm mineral calculation
KW  - Dachschiefer
KW  - Chemische Analyse
KW  - Mineralogie
KW  - Kalkulationsverfahren
Y1  - 2020
UR  - https://ubt.opus.hbz-nrw.de/frontdoor/index/index/docId/1653
UR  - https://nbn-resolving.org/urn:nbn:de:hbz:385-1-16539
IS  - 10/5
SP  - 1
EP  - 22
PB  - MDPI
CY  - Basel
ER  -