Lawsonite is a metamorphic mineral typical of the blueschist facies. It also occurs as a secondary mineral in altered gabbro and diorite. Associate minerals include epidote, titanite, glaucophane, garnet and quartz. It is an uncommon constituent of eclogite.

Lawsonite is a metamorphic mineral typical of the blueschist facies. It also occurs as a secondary mineral in altered gabbro and diorite. Associate minerals include epidote, titanite, glaucophane, garnet and quartz.

Originally described from a crystalline schist associated with serpentine. Also found as a secondary mineral in altered gabbros and diorites. Reed Station, Tiburon peninsula, Marin County, California, USA. Link to MinDat.org Location Data. Named for Andrew Cowper Lawson (1861-1952), Scottish-American geologist.

Sep 5, 2023 · Lawsonite is an important mineral for geological research but a very rare gemstone, making it sought-after by collectors. Learn lawsonite’s prices, properties, and history in this guide!

Lawsonite is a typical mineral of the glaucophane schist facies associated with chlorite, titanite, glaucophane, quartz, epidote, and garnet. Also found as a secondary mineral in altered gabbros and diorates.Generally located on the Tiburon Peninsula in San Francisco Bay, California.

Lawsonite forms at high pressures and low temperatures, especially in low-grade regionally metamorphosed glaucophane schists. It also forms from plagioclase during saussuritization of gabbros and diabases; rarely in eclogites. Ransome, F.L. (1895) On lawsonite, a new rock-forming mineral from the Tiburon Peninsula, Marin County.

Oct 1, 2020 · Lawsonite is an abundant hydrous mineral in oceanic crust, sediments, and metasomatic rocks at depths of ~45 to 300 km in most subduction zones, but it is rarely preserved in the geologic record because it commonly transforms to epidote and other minerals during prograde or retrograde metamorphism.

Lawsonite Group mineral data, information about Lawsonite Group, its properties and worldwide locations.

Lawsonite is a rare mineral, and is a hydrated variant of the feldspar Anorthite. It is named after Andrew Cowper Lawson (1861-1952), a professor of geology at the University of California at Berkeley.

May 20, 2014 · Lawsonite is a hydrous calcium aluminium sorosilicate mineral with formula CaAl 2 (Si 2 O 7) (OH) 2 ·H 2 O. Lawsonite crystallizes in the orthorhombic system in prismatic, often tabular crystals. Crystal twinning is common. It forms transparent to translucent colorless, white, and bluish to pinkish grey glassy to greasy crystals.