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Contributed by Yale Peabody Museum of Natural History.
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Transcription
Chem Anal. on Brush from Laramie
CLay-
Silica 75.89
19.08
2.21
0.56
0.22
0.26
1.40
___________
99.62.
DFC Co - Manning narrow vental crucible
clay - west of Blue ribbon -
Coois uses same from hogback
E of Mt Vernon Canyon: Black
silica.
F.C vein Rm North Loop is NA
South - not in commercial quality,
till Roxbury Pk.