Appendix 1 List of Geologically Important elements and the Periodic Table

Steven Earle

The following table includes 36 of the geologically important elements, listed alphabetically by their element name, along with their atomic number and the atomic mass of their most stable isotope.

The geologically most important elements are bolded, and the eight main elements of silicate minerals are identified with an asterisk (*).

Symbol Name Atomic No. Atomic Mass
Al* Aluminum 13 27
As Arsenic 33 75
Ba Barium 56 137
Be Beryllium 4 9
B Boron 5 11
Cd Cadmium 48 112
Ca* Calcium 20 40
C Carbon 6 12
Cl Chlorine 17 35
Cr Chromium 24 52
Co Cobalt 27 59
Cu Copper 29 64
F Flourine 9 19
Au Gold 79 197
He Helium 2 4
H Hydrogen 1 1
Fe* Iron 26 56
Pb Lead 82 207
Mg* Magnesium 12 24
Mn Manganese 25 55
Mo Molybdenum 42 96
Ne Neon 10 20
Ni Nickel 28 59
N Nitrogren 7 14
O* Oxygen 8 16
P Phosphorus 15 31
Pt Platinum 78 195
K* Potassium 19 39
Si* Silicon 14 28
Ag Silver 47 108
Na* Sodium 11 23
Sr Strontium 38 88
S Sulfur 16 32
Ti Titanium 22 48
U Uranium 92 238
Zn Zinc 30 65

The periodic table is a list of all of the elements arranged in groups according to their atomic configuration. In this table the elements are colour-coded according to their chemical and physical properties.

periodic table

For an accessible version of the periodic table please see Syngenta Period Table of Elements (http://www.syngentaperiodictable.co.uk/periodic-table.php?keyStage=5)

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