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MD-245531 - Glaucophane - - Archived Tiburon Peninsula, Marin Co., California, USA cabinet, 11.4 x 6.9 x 3.8 cm.
11.4 x 6.9 x 3.8 cm. Lustrous, black glaucophane prisms are festooned on all sides of the gneiss matrix of this fine cabinet specimen from Marin County, California. Glaucophane is an uncommon amphibole group mineral and is found in low to medium temperature metamorphic terrains. It is relatively common in California, but is seldom seen in old-time, quality specimens, such as this. Ex. Mullane Collection.
MD-257290 - Lawsonite, Glaucophane - - Archived Valley Ford, Sonoma Co., California, USA small cabinet, 5.7 x 2.8 x 2.5 cm.
5.7 x 2.8 x 2.5 cm. Lawsonite is a relatively rare Calcium, Aluminum Silicate, and some of the finest specimens in the world are found in California. Although this piece is not from the type locality in Marin County, it is a good reference specimen featuring a few small, sharp, bladed crystals of white Lawsonite with associated grey Glaucophane. Ex. Allen Heyl Collection. All Content and Design ©1996-2010 The ArkenstonePowered by http://mineralwebsites.comBy-species Galleries |
