BLANCHARD HILL
north of Mt. Vernon, Washington

GEOLOGY
UNDER CONSTRUCTION - Plesase visit Washington Geology Vol. 26 No.4 December 1998 for more information.

MINERALS
Stilpnomelane-
K5Fe48(Si63Al9)O168(OH)216.12H2O - Micaceous black radial aggregates in white quartz matrix

STILPNOMELANE