Minerals of Blanchard Hill, north of Mt. Vernon, Skagit County, Washington

BLANCHARD HILL
north of Mt. Vernon, Skagit County, 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 - Occurs as micaceous black radial aggregates in white quartz matrix

STILPNOMELANE