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mlnerrls library - Alaska Division of Geological & Geophysical Surveys

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Table 2.--Enrichment above rock crustal abundance for selected percentiles <strong>of</strong> the<br />

chalcophile, siderophile, and l ithophi le elements in the Petersburg area, southeast <strong>Alaska</strong><br />

[See page 5 for explanation. Table pages run from 15 to /8 ]<br />

El ement Crustal Sample Percenti 1 es<br />

Element class abundance1 type 25th 50th 75th 80th 90th 95th 97.5 9gh<br />

S S 0.63 0.95 1.5 1.7 2.1 2.5 2.9 3.:<br />

Fe------ Si derophi 1 e 5.6 C- 3 -38 .71 1.1 1.2 1.4 2.1 3 4.3<br />

Peb .48 .57 .66 .71 -91 1.1 1.4 1.8<br />

Ex -41 .67 1.0 1.1 1.6 2 2.4 3.2<br />

- SS .48 .78 1.2 1.4 1.8 2.2 2.6 3.3<br />

Mg------ Li thophil e 2.3 C-3 .39 .61 .87 .96 1.7 2.2 2.7 4.5<br />

Peb .25 .33 .46 .50 .91 1 1,13 1.6<br />

Rx .36 .69 1.0 1.2 1.7 2.3 3.0 4.1<br />

SS .27 -51 .95 1.09 1.5 1.9 2.2 2.8<br />

Ca------ Li thophi 1 e 4.1 C-3 1.3 1.8 2.6 2.8 5.1 6.1 9.4 11.9<br />

Peb .20 .32 .4 9 -54 .71 .90 1.4 2.7<br />

Rx -20 .48 1.0 1.1 2.2 3.7 5.4 - -<br />

e .<br />

A+---- Chal cophi 1 e<br />

As------ Chal cophi 1 e 1.8<br />

ku------ Siderophi 1 e

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