Oaks, Clouds - Marin County 2016 |
Oak, Rock - Marin County 2016 |
Serpentinite is formed from olivine via several reactions,
some of which are complementary. Olivine is a solid solution between the
magnesium-endmember forsterite and the iron-endmember fayalite. Serpentinite
reactions . . . exchange silica between forsterite and fayalite to
form serpentine group minerals and magnetite. These are highly exothermic
reactions.
Also, the State Rock of California.