- Palos Verdes Hills (Palos Verdes Cliffs)
| [var. Labradorite] Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc. Sharp, W.E. (1959) Minerals from Los Angeles County, California. Printed privately, Los Angeles, California: 4 Van Nostrand Reinholt Press: 360. |