Search Results
Abstract
High-sensitivity micro-INAA (Instrumental Neutron Activation Analysis) techniques are used to obtain high quality analyses for a variety of geochemically interesting elements on samples weighing only a few tens of micrograms. In particular, small (
100–500 µm) core samples from specially selected regions of petrographic thin sections can be obtained using a micro-coring device and analyzed by micro-INAA. Uncertainties in weighing (or in normalizing the INAA data to results from other techniques in order to obtain weights) limit the accuracy of elemental concentrations to perhaps ±5% relative for medium-grained samples.
. Murphy , C.P. 1986 Thin section preparation of soils and sediments . A.B. Academic , Berkhamsted , 149 . Pető
were investigated in well-preserved morphotype representatives under scanning electron microscope (SEM, Hitachi S-2600N at 20 kV from 5–8 mm distance), in X-ray micro-computed tomography (µCT, phoenix v|tome|x m), and as thin sections under polarized
2004 : Studies of thermal evolution of a chondritic asteroidal body: Synthesis from Antarctic meteorite thin section set of the National Institute of Polar Research, Tokyo . — Acta Mineralogica Petrographica 45/2 , pp. 55 – 60
. Handbook for Soil Thin Section Description . Waine Research Publications , Wolverhampton . B uzás , I. , B álint , S. , F üleky , G. , K ardos , J. , L ukács , A. , M urányi
Palaxius decaochetarius . From thin sections, Palik ( 1965 ) also reported crab antennae of a possible thalassinid origin. Fülöp (in Hetényi et al. 1968 ) reported a macrofauna ( Olcostephanus astierianus, Neolissoceras grasianum, Neocomites neocomiensis
. Murphy , C.P. 1985 : Thin section preparation of soils and sediments . – A B Academic Publishers , Berkhamsted , 149 p. Nyilas , I. , P. Sümegi
. (manuscript, in Hungarian) Dickson, J. A. D. 1965: A modified staining technique for carbonates in thin section. - Nature, 205, pp. 587. Esteban, CM. 1976: Vadose Pisolite and Caliche. - AAPG Bulletin, 60
has been developed. The new method is suitable for examining minerals in-situ in (1) whole-rock specimens without any sample preparation or (2) in polished thin sections, and (3) even in small amounts of powdered form. Advantages of the in-situ μ
Abstract
The ancient mortars of the monastery of San Filippo di Fragalà in Frazzanò, the first Basilian-Norman center in Sicily, have been studied and classified by means of ICP, HPLC, TG-DTA, XRD and thin sections analysis. A new very simple method to evaluate the hydraulic properties of the mortars, based on the combination of analytical and thermogravimetric data, is also reported. The HPLC investigations indicate that the monastery is only partially involved in decay phenomena due to the action of soluble salts.
