A method for determining the normative mineralogy of tills

A new computer program, NORMA, was developed for calculating the normative mineral composition of till from analytical data. The NORMA program manipulates concentrations of elements totally dissolved by hot aqua regia and total element concentrations measured by either total dissolution or X-ray flu...

Full description

Saved in:
Bibliographic Details
Published in:Applied geochemistry 1996-01, Vol.11 (1), p.117-120
Main Authors: Tarvainen, Timo, Aatos, Soile, Räisänen, Marja-Liisa
Format: Article
Language:English
Subjects:
Earth sciences
Earth, ocean, space
Exact sciences and technology
Geochemistry
Mineralogy
Mineralogy: general, methodology, regional studies
Petrology of sedimentary rocks except quaternary rocks
Sedimentary rocks
Soil and rock geochemistry
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A new computer program, NORMA, was developed for calculating the normative mineral composition of till from analytical data. The NORMA program manipulates concentrations of elements totally dissolved by hot aqua regia and total element concentrations measured by either total dissolution or X-ray fluorescence method. Minerals dissolving in aqua regia are presumed to be trioctahedral micas (biotite), clay minerals (chlorite), and primary and secondary salts and hydroxyoxides. The abundances of the main silicates (quartz, K feldspar, albite, anorthite and hornblende) and resistant oxides (ilmenite, magnetite) are determined by subtracting the concentrations of elements soluble in aqua regia from the element concentrations of the total analyses. NORMA gave a reliable distribution of the main minerals in reconnaissance scale till sampling in Finland.
ISSN:0883-2927
1872-9134
DOI:10.1016/0883-2927(95)00091-7