Reed Station, Tiburon Peninsula, Marin Co., California, USA
Type Location
CaAl2(Si2O7)(OH)2·H2O
Violet blue crystals of Lawsonite from the type location. None of the crystals appear to be complete. The greenish material is Schist composed with either green Chlorite or Glaucophane. There are also small blackish crystals of Actinolite in the matrix.