Mineralization is hosted in rocks of the Franciscan complex (eclogite affected by blueschist facies retrograde metamorphism).
References: Armstrong, L.S., Page, F. Zeb, and Essene, E.J. (2004), Two Generations of Sphene in One Garnet from a Franciscan Eclogite, Healdsburg, California; 2004 Denver Annual Meeting (November 7–10, 2004) Geological Society of America Paper No. 50-9. http://gsa.confex.com/gsa/2004AM/finalprogram/abstract_78888.htm
The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database!
