Sample
Number F531-6181
NumberF531-6181
LocalityMaardu F-531 borehole
Coordinates59.465055, 25.062865
Elevation31.30
Depth216
Depth / thickness (m)167
Depth to167
StratigraphyProterozoic
Date collected1960-1990
Sample purposegeochemistry and petrophysics
Rockgraphite-biotite gneiss (GNBIGF)
Materialgraphite-biotite gneiss
OwnerEesti Geoloogiateenistus (EGT)
InstitutionGeological Survey of Estonia
Date added2022-11-29
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