COMMISSION GEOLOGIOUE - arkisto.gsf.fi

6 Bulletin de la Commission geologique de Finlande N: 0 194.
Fig. 1.
This interpretation was observed to be correct when, on November 5,
11)59, the first hole drilled into the western end of the zone pierced a
chromite deposit twenty meters thick; and it was further verified in other
parts of this long and narrow anomaly zone, as all twenty-six drillholes
made by the Geological Survey within the anomaly zone have proved the
occurrence of chromite.
On the basis of the drillings carried out by the Ore Department between
October 25, 1959 and April 30, 1960, the thickness of the chromite deposit
included in the geophysical anomaly sequence varies between twenty and
100 meters and it may be estimated to contain 17.5 million tons of over
20 % and 4.4 million tons of over 30 % chromium ore. On the basis of
analyses performed at the Geological Survey, the chromium-iron ratio
of the portions investigated is relatively low, varying around 0.840-l.87.