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PETROLOGYlgneous, Sedimentary, and Metamorphic

THIR D EDITION

HARVEY BLATT

The Hebrew University of Jerusalem

ROBERT J. TRACYVirginia Polytehni Institute an! "tate University

BRENT E. OWENS

The #ollege of $illiam an! %ary

11$& H& 'reeman an! #om(any

New )or*

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TABLE 3-2Oxide

Sample conversion of weight percent oxides to mole percent oxides

Weight percent Molecular weight Wt%/mw Mole %

2 #ha(ter + #hemistry, Physis, an! #lassifiation of Igneous Ro*s

TABLE +-. #hemial om(osition /wt01 of earth, mantle, an! rust

Element

'e

Earth2

+.

O3i!e

"i45

%antle2

67&5

Oeani rusth

68&6

#ontinental rust

94&+

o +4 Ti:5 4&;. .&6 .&4

"i .< =l5>+ +&76 .7&6 .7&9

%g .9 'e:!

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"i:5 ;5&46 94&48 .&.8+ .6&65 .4.&8+7 4&.6.7 8&54'e: 5&84 ;.&