Hawasini

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Location - Oman

Age (of portore) - 146 Ma

Original size - 0.15 million tonnes of Mn

References

Peters, Tj., 1988, Geochemistry of manganese-bearing cherts associated with alpine ophiolites and the Hawasina Formations in Oman: Marine Geology, v. 84, p. 229-238.

major elements - trace elements

Major Elements, oxide percent

 

 

 

%

%

%

%

%

%

%

%

%

%

%
MnO
Fe2O3t
SiO2
Al203
CaO
MgO
K2O
Na2O
TiO2
P205
LOI

Average

 
High Mn cherts
38.2
1.73
51.3
0.91
0.66
0.26
0.21
0.04
0.06
0.10
2.66
36OM Mn-rich chert 60.5 0.66 27.2 0.66 1.11 0.32 0.06 0.01 0.05 0.19 1.95
32OM Mn-rich chert 52.9 0.62 35.7 0.54 0.38 0.11 0.38 0.00 0.02 0.11 1.27
48OM Mn-rich chert 51.6 0.58 36.1 0.29 1.07 0.56 0.08 0.00 0.02 0.15 2.09
35OM Mn-rich chert 49.6 0.68 37.2 0.75 0.75 0.27 0.39 0.00 0.04 0.11 1.91
50BOM Mn-rich chert 34.4 7.69 56.4 0.42 0.57 0.00 0.06 0.00 0.03 0.09 5.39
46OM Mn-rich chert 24.8 2.44 61.3 3.40 0.51 0.56 0.43 0.00 0.26 0.04 4.15
50AOM Mn-rich chert 20.0 0.40 75.2 0.21 0.36 0.07 0.09 0.33 0.02 0.08 2.59
31BOM Mn-rich chert 12.1 0.80 81.3 1.01 0.49 0.17 0.16 0.00 0.06 0.03 1.91
                         
30OM radiolarian chert 8.50 1.37 84.9 1.50 0.51 0.17 0.35 0.19 0.10 0.08 2.32
29OM radiolarian chert 8.01 1.71 84.2 1.78 0.66 0.32 0.29 0.23 0.12 0.06 2.69
31AOM radiolarian chert 6.63 1.45 86.7 1.69 0.31 0.24 0.45 0.00 0.10 0.03 2.35
49OM radiolarian chert 1.26 1.33 90.6 1.64 0.62 0.24 0.34 0.24 0.10 0.05 3.28
45OM radiolarian chert 0.58 1.29 90.8 2.54 0.60 0.60 0.41 0.24 0.15 0.03 3.54
34OM radiolarian chert 0.38 0.97 92.2 1.68 0.38 0.28 0.29 0.08 0.10 0.02 2.34
33OM radiolarian chert 0.24 1.25 90.7 2.32 0.69 0.49 0.41 0.78 0.13 0.01 3.25
38OM radiolarian chert 0.20 1.25 92.6 1.82 0.40 0.35 0.29 0.41 0.11 0.05 2.59
4!OM radiolarian chert 0.10 3.25 81.8 5.33 1.45 1.57 0.70 0.12 0.40 0.08 6.91
37OM radiolarian chert 0.09 4.26 78.9 6.55 1.21 1.58 1.20 0.08 0.56 0.09 7.05
44OM radiolarian chert 0.08 1.52 91.3 2.21 0.63 0.49 0.37 0.93 0.14 0.03 3.35
39OM radiolarian chert 0.05 1.13 92.7 1.79 0.55 0.35 0.28 0.28 0.11 0.03 2.66
40OM radiolarian chert 0.03 1.09 91.4 1.91 0.87 0.46 0.26 0.08 0.12 0.03 3.16

 

Trace elements, ppm

 

 

ppm

ppm

ppm

ppm

ppm

ppm

ppm

ppm

ppm

ppm

ppm

ppm

ppm

ppm

ppm

ppm

 
Ba
Co
Cr
Cu
Nb
Ni
Pb
Rb
Sc
Sr
Th
U
V
Y
Zn
Zr
avg high Mn samples
1669
133
173
59
19
144
7.3
12
1.4
400
17
16
281
25
53
43
36OM 970 211 178 112 23 169 23 13 1 459 21 17 564 33 79 43
32OM 2491 188 190 32 21 171 12 10 0.5 451 16 22 561 23 98 42
48OM 102 97 221 20 20 482 3 11 0.5 306 19 19 191 32 51 39
35OM 2533 133 171 19 18 129 3 8 0.5 435 14 9 406 23 70 37
50BOM 147 87 151 10 15 81 3 9 0.5 231 15 15 163 20 46 33
46OM 4128 184 67 253 22 58 3 25 7 565 20 13 210 33 48 74
50AOM 157 51 238 2 17 31 3 11 0.5 343 19 18 43 20 17 34
31BOM 2820 111 169 25 12 28 8 10 0.5 411 12 12 109 15 18 40
 
30OM 1788 31 215 106 17 20 15 18 1 156 18 16 215 19 26 42
29OM 585 19 133 111 17 23 23 19 2 197 23 21 115 27 27 48
31AOM 1395 30 135 78 17 25 22 18 1 317 22 19 183 18 30 48
49OM 258 4 146 32 9 14 26 13 0.5 101 9 5 21 16 16 42
45OM 180 27 66 55 11 29 17 20 3 143 12 8 19 15 21 49
34OM 255 4 159 32 9 19 12 15 0.5 80 7 4 10 11 15 39
33OM 38 4 102 18 10 13 15 19 2 127 12 8 17 14 18 46
38OM 39 4 170 12 11 15 14 15 1 72 9 6 5 18 16 41
4!OM 85 27 37 74 19 44 24 36 10 142 16 10 79 28 46 91
37OM 98 21 60 30 24 51 26 50 14 204 17 8 82 28 64 105
44OM 33 16 117 50 12 20 17 20 2 84 9 7 14 14 21 47
39OM 47 4 161 10 11 13 15 15 1 102 8 7 5 14 15 43
40OM 40 4 175 12 10 15 13 15 1 112 9 7 10 12 17 45

blank or nr = not reported; bd = below detection