Resource efficiency in the clay brick and tile industryPart VIII: Greywacke filler from hard stone processing

»1 Spectacular geology at Hüttengrund Quarry/Thuringia

»2 Tectonically folded layers like car body sheet in a scrap baling press

»3 Characteristic microstructure of greywacke in a specimen

»4 Layout for greywacke filler SON 5049

»5 Fired samples of greywacke filler SON 5049

1 Geological background and site

At Hüttengrund Quarry, tectonically deformed greywacke layers are extracted and processed to high-grade aggregate and building material mixes for road construction. During crushing and sizing, around 30 000 t material filler per year is collected from the dust collection system. The quarry is operated as a part of the amo/Debus Group by Hartsteinwerk Hüttengrund GmbH. It is located north of Sonneberg in Thuringian Forest and is currently working six levels with a total height of more than 100 m (»1). Geologically speaking, the deposit lies at the southern edge...

Issue 4/2016 EurGeol Dr. rer. nat. Lutz Krakow & Dipl.-Geol. Franziska Schunke

Current clay potential in Germany | Part 2: Raw materials from the Ordovician and Devonian systems

1 Global geological history and tectonics The geologically oldest clay raw materials used in the German clay brick and tile industry date from the Ordovician. In geological history, the Ordovician is...

Issue 08/2014

Resource efficiency in the clay brick and tile industry Part X: Fine grit from granite quarrying

1 Geological background and site At the Henneberg quarry near Heberndorf, Thuringia, Lower Carboniferous granite is extracted and processed to obtain such high-quality building materials as high-grade...

Issue 01/2022

Modern raw materials for the clay brick and tile industry –Part 3: Mica schist from the andalusite-mica rock quarry in Schelmberg

1. Geological background and location Andalusite-mica rocks are contact-metamorphic texture-free rocks. Mineralogically, they consist mainly of mica, quartz and feldspar. The metamorphic mineral...

Issue 4/2015 EurGeol Dr. rer. nat. Lutz Krakow

Resource efficiency in the clay brick and tile industry | Part XII: Greywacke carbonate granulate from hard rock processing

1 Geological background and site At Berge Quarry near Meschede/North Rhine-Westphalia, in one concession both greywacke and limestone are extracted and processed to aggregates and construction...

Issue 04/2022

Modern raw materials for the clay brick and tile industry Part 4: White rock fillers from Henau Quarry

1 Geological background and location At Henau Quarry, Taunus quartzite from the Lower Devonian is extracted and processed to high-quality aggregates and high-grade chippings. The material is used...