Geoscience Reference
In-Depth Information
a)
Arkose
Argillaceous
Argillaceous (black)
Clastic
Carbonate
Chemical (inc' BIF)
U (ppm)
Th (ppm)
Th (ppm)
Th/U=1
10
6
10
6
10
6
Ilm/Rut
10
5
10
5
10
5
10
4
10
4
10
4
Zr
Zr
Zr
10
3
10
3
10
3
Sph
Rut
Sph
Sph
U/K=1
Th/K=1
10
2
10
2
10
2
Amp
Biot
Ilm
Biot
Amp
Biot
Amp/Pyx
Na Fsp
Pyx
Pyx
10
1
Mag
10
1
Na Fsp
10
1
Mag
Mag
K Fsp
Mus
K Fsp
O
Qtz
Qtz
Ol
Qtz
10
0
Ol
10
0
10
0
Na Fsp
Ca Fsp
Ca Fsp
K Fsp
100
50
0
Ca Fsp
10
-1
10
-1
10
-1
K (%)
10
-2
10
-2
10
-2
Ilm/Rut
Mus
Mus
Ilm Rut
10
-3
10
-2
10
-1
10
0
10
1
10
2
10
-3
10
-2
10
-1
10
0
10
1
10
2
10
-2
10
-1
10
0
10
1
10
2
10
3
10
4
10
5
10
6
Average crust
K, Th & U ore minerals
Common minerals
Data comprising (a)
K (%)
K (%)
U (ppm)
b)
Heavy mineral sands
Coal
U & Th ores
U (ppm)
Th (ppm)
Th (ppm)
10
6
10
6
10
6
Cof
10
6
Cof
Ura
Cof
Bra
Tho
Tho
Mon
10
5
10
5
10
5
Mon
10
5
10
4
10
4
10
4
10
4
Bra/Ura
Mon
Tho
10
3
10
3
10
3
10
3
Ura
Ura
Pyx/Zr
10
2
10
2
10
2
10
2
Mag
10
1
10
1
10
1
10
1
Qtz
Sph
Mus
Amp
Biot
Cof
10
0
10
0
10
0
10
0
Ca Fsp
Ol
10
-1
10
-1
10
-1
10
-1
Mon
Syl/Car
K Fsp
Na Fsp
10
-2
10
-2
10
-2
10
-2
Car
Syl
Bra
Car
Syl
Bra
100
50
Tho
0
10
-3
10
-3
10
-2
10
-2
10
-1
10
-1
10
0
10
0
10
1
10
1
10
2
10
2
10
-3
10
-2
10
-1
10
0
10
1
10
2
10
-2
10
-1
10
0
10
1
10
2
10
3
10
4
10
5
10
6
K (%)
K (%)
K (%)
U (ppm)
Figure 4.14
Radioelement content of sedimentary rocks and selected minerals and ores. Data compiled from numerous published sources. (a) Data subdivided according to lithotype.
(b) Comparison between various lithotypes, K, U and Th ores and heavy mineral sand deposits. See caption to
Fig. 4.12
for abbreviations.
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