Mineralogy of weathering processes on the spoil dumps in the Ostrava-Karvina Coal District

Conference · Sat Dec 31 04:00:00 EST 1994

OSTI ID:106367

Matysek, D; Bielesz, M ^[1]

---

1. Univ. of Mining and Metallurgy, Ostrava (Czechoslovakia)

Exploitation of coal in the Ostrava-Karvina Coal District is accompanies by the accumulation of large amounts of waste materials: spoil rocks from mine works, wastes from processing plants, and coal slurries. This waste often is sued for landscape preparation, or it is deposited on spoil dumps. According to their composition, carboniferous materials (siltstones, silt-claystones with admixtures of coal matter prevailing, and fine-grained feldspathic sandstones and subgraywackes) are considered to be relatively harmless to the environment. Problems resulting from reclaiming spoil dumps have resulted in more detailed study of the relationship between carboniferous materials and the environment, specifically, the relationship between spoil dumps and such factors as the ecosystems and acidification, geochemical reactivity of carboniferous rocks,a nd stability of minerals. Geological processes of environmental concern in this case include the mineralogy of weathering products with production of salts (evaporation) and the degradation of clay fractions. Geochemical and botanical factors of origin of soils on spoil dumps were described by Stalmachova and Matysek. The authors report a study in which changes in the clay minerals from dumps are compared with paragneiss of clay minerals on the carboniferous outcrops.

• OSTI ID: 106367
• Report Number(s): CONF-9210116--; ISBN 1-885189-02-8
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
CHLORITE MINERALS
CLAYS
CZECH REPUBLIC
ILLITE
KAOLINITE
MICA
MINERAL WASTES
MINERALIZATION
MONTMORILLONITE
MUSCOVITE
PHASE STUDIES
SPOIL BANKS
SULFATE MINERALS
TAILINGS
VERMICULITE
WEATHERING