Index No: NBM056681; Collected By: ; Sample Type: hand sample; Notes: Outcrop grab sample from silica ledge 3-4 feet thick, E-W, 45�N, top of ledge marked by a N60�W48�N shear plane with slicks plunging 15�ESE. Rock in hanging wall and footwall of ledge is argillized volcanic and/or volcaniclastic rock (samples 5668A and 5668B, respectively). Photos 8 (shear plane) and 9 (ledge from east). -Castor - 4/26/95.