Chapter VIWeathering and Sedimentary Rocks

Table VI-2. Compositions of residual deposits (saprolite and bauxite) and their parental rocks (basalt and nepheline syenite) in unit of ppm, and the enrichment factors of elements ( i

AlE ) in the residual deposits relative to their parental rocks.

Hawaii Arkansas i

AlE

Basalt(1) Saprolite(1) Syenite(2) Bauxite(2) Saprolite Bauxite Ag-47 0.14 ~ 0 ~ 0 Al-13 70000 70000 102000 300000 1 1 B-5 ~ 0 3 >1 Ba-56 410 8 710 13 0.02 0.006 Be-4 0.9 0.5 1.7 0.6 Ca-20 66000 40 10100 330 0.0006 0.01 Co-27 90 18 0.2 Cr-24 400 560 2 43 1.4 7.2 Cu-29 290 33 5 13 0.11 0.87? Fe-26 100000 27000 58000 0.72 Ga-31 13 15 20 63 1.2 1.1 K-19 3000 ~ 0 52000 500 ~ 0 0.003 La-57 30 3 300 120 0.1 0.13 Mg-12 100000 1200 3800 53 0.012 0.005 Mn-25 1200 450 970 830 0.38 0.29 Mo-42 2.8 3.5 8.5 30 1.3 1.2 Na-11 12000 ~ 0 56000 600 ~ 0 0.004 Nb-41 15 15 130 500 1 1.3 Ni-28 840 250 0.3 P-15 3000 950 0.32 Pb-82 12 0.5 20 10 0.04 0.17 Sc-21 18 3 5 5.3 0.17 0.35 Si-14 200000 36500 270000 21000 0.17 0.026 Sr-38 720 2 270 35 0.003 0.043 Th-90 19.3 52 0.9 Ti-22 24000 16500 5100 7300 0.69 0.48 U-92 4.9 6.2 0.42 V-23 210 250 47 60 1.2 0.43 Y-39 60 0.1 130 57 0.002 0.15 Zr-40 190 60 500 1200 0.32 0.80 Data sources: (1) Patterson (1971); (2) Gordon et al. (1958) except Th and U data are from

Adams and Richardson (1960).

H

Li

B

NF

Na Al

PCl

KSc V Mn Co Cu

Ga

AsBr

RbY Nb Tc Rh Ag

InSb

I

CsLa Pr Pm Eu Tb Ho Tm Lu

Ta Re Ir Au

TlBi

At

FrAc Pa NpAmBk Es Md

Lr

He

BeC

O

Ne

Mg SiS

Ar

Ca Ti Cr Fe NiZn

GeSe

Kr

SrZr Mo Ru Pd Cd

SnTe

Xe

Ba Ce NdSmGd Dy Er Yb HfW Os Pt

HgPb Po

Rn

Ra Th U Pu Cm Cf Fm No

3p6

2p6

4p6

6p6

1s2

2s2

3s2

4s2

5s2

6s2

5d10

4d10

3d10

4f14

5p6

5f14

3d5

4d5

5d5

4f7

5f7

4s2

3d5

5s2

4d5

6s2

4f7

4f14

5d5

7s2

5f7

5f14