Calcium



General
Atomic Number 20
Symbol Ca    
Relative Atomic Mass 40.08
Year of Discovery 1808
Boiling Point (°K, °C) --
Melting Point (°K, °C) --
Geochemical Class lithophile
Principal Sources
Mineral or Other calcite
Formula CaCO3
Origin sedimentary
(marine organisms)
Relative Abundance (log10)
Sun 6.4
Meteorite 6.38
Earth 7.23
Crust 7.72
Ocean 10.01
Body 6.0
Isotopic Composition (v, e)
Mass Number 40 42 43 44 46 48
% Abundance 96.94 (d) 0.65 0.14 2.09 0.004 0.19


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