Szczegóły publikacji
Opis bibliograficzny
Smectite-, silica- and zeolites-bearing raw materials (Hliník and Hronom bentonite, Slovakia) – a new approach using integrated petrographic and mineralogical studies / Katarzyna GÓRNIAK, Tadeusz SZYDŁAK, Adam GAWEŁ, Agnieszka KLIMEK, Anna TOMCZYK, Jerzy Motyka, Krzysztof BAHRANOWSKI // Applied Clay Science ; ISSN 0169-1317. — 2017 — vol. 141, s. 180–191. — Bibliogr. s. 190–191, Abstr. — Publikacja dostępna online od: 2017-03-06
Autorzy (7)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 104886 |
|---|---|
| Data dodania do BaDAP | 2017-04-28 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.clay.2017.02.032 |
| Rok publikacji | 2017 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Applied Clay Science |
Abstract
This paper presents the results of detailed petrographic and mineralogical studies of commercial bentonite from the Hliník nad Hronom deposit in Slovakia. The X-ray diffraction, optical microscopy, field emission scanning electron microscopy (FESEM), thermal analysis, infrared spectroscopy and chemical analyses revealed that the main component of the studied commercial bentonite is montmorillonite (47%) followed by opal-C/CT (20%), clinoptilolite (15%), biotite (3%), potassium feldspar and plagioclases (12%), and quartz (3%). Both the optical microscopy and FESEM studies demonstrated that the precursor of bentonite was ignimbrite composed of compressed, strongly deformed pumice fragments, which were moulded around pyroclastic grains such as biotite, plagioclase, quartz and fragments of volcanic rocks. The pumice fragments were locally cemented by microcrystals of potassium feldspars and subsequently replaced by montmorillonite, and opal-C/CT, less commonly by clinoptilolite. The specific surface area of the studied bentonite is about 50 m2/g. Although bentonite from the Hliník nad Hronom deposit is recognized as a medium-quality raw material due to relatively low content of smectite, it can be valuable as a substance which integrates the properties of smectite-, silica- and zeolite-bearing raw materials.
