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"by Andy Thompson, MSDC Secretary\n\nThis report is provided to encourage readers to visit MSDC’s YouTube channel to view the video of Debra’s presentation in its entirety including the follow-up question and answer session. It runs for about 68 minutes.\n\nGeology Professor Emerita Debra Brooks began her presentation by saying that she would explain the interesting interplay between three realities: actinolite, Alpine mud flows and the San Andreas Fault:\n\n“This is a talk about actinolite, a mineral "
<https://news.mineralogicalsocietyofdc.org/actinolite-alpine-mudflows-san-andreas/>