https://www.usgs.gov/publications/two-garnet-rodingite-amador-county-california
Two-garnet rodingite from Amador County, California | U.S. Geological Survey
Two distinct phases of garnet have been discovered in rodingite from Amador County, Calif. The two garnets are hydrogrossular and (hydro?) grossular-andradite....
amador countytwogarnetrodingite