Monterey Co., California, USA

References:
Blake, Wm. P. (1855), Observations on the extent of the gold region of California and Oregon, with notices of mineral localities in California and of some remarkable specimens of crystalline gold: American Journal of Science, 2nd. Series: 20: 82.

Blake, Wm. P. (1858), Report of a geological reconnaissance in California 370 pp., New York: 303.

Blake, Wm. P. (1866), Annotated catalogue of the principal mineral species hitherto recognized n California and the adjoining states and territories; being a report of the California State Board of Agriculture. 31 pp., Sacramento.

Hanks, Henry Garber (1884), Fourth report of the State Mineralogist: California Mining Bureau. Report 4, 410 pp. (includes catalog of minerals of California pp. 63-410), and miscellaneous observations on mineral products): 396.

Lawson, Andrew Cowper (1893), The geology of Carmelo Bay: University of California, Department of Geologic Science Bulletin: 1: 31.

Bradley, W.W., et al (1918), Manganese and chromium in California: California Mining Bureau. Bulletin 76: 50-51.

Ross, Clarence Samuel & Earl V. Shannon (1926), The origin, occurrence, composition, and physical properties of the mineral iddingsite: US National Museum Proceedings 2579, vol. 67, Art. 7: 1-19.

Trask, Parker Davies (1926), Geology of Point Sur quadrangle, California: University of California, Department of Geological Science Bulletin: 16: 119-186; […(abstract): Geol. Zentralbl., Band 36: 136-137 (1927)]: 131.

Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 207, 224, 298, 391.