"Naylor Rock"
Vanderberg Mine, Hiriart Mountain, Pala, Pala Mining District, San Diego County, California, USA
Caption: "ILL. No. 34. NAYLOR-VANDERBURG MINE, HERIART MOUNTAIN, SAN DIEGO COUNTY. "NAYLOR ROCK," SHOWING PEGMATITE ABOVE, ZONE OF POCKETS AND BANDED "LINE-ROCK" BELOW." Source: Kunz, G. F. 1905. Gems, jeweler's materials, and ornamental stones of California. California State Mining Bureau Bulletin 37, p 131.
© 1905 California State Mining Bureau