Occurrence near Shadow Lake

outcrops of asbestos in Madera county, CA

Geologic information

Name of siteOccurrence near Shadow Lake
Developmentoutcrops
StateCA
CountyMadera
Geographic location:-119.125, 37.697
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Fibrous mineralDark blades and needles of piedmontite, embedded in quartz and associated with white, fibrous tremolite"" (Short, 1933, p. 494)
Associated mineralspiedmontite
quartz
Host rock typesschistose volcanic rocks
Geologic map unit-119.125, 37.697
Nearby scientific dataFind additional scientific data near this location

Reference information

Short, A.M., 1933, A chemical and optical study of piedmontite from Shadow Lake, Madera County, California: American Mineralogist, v. 18, no. 11, p. 493-500.
[http://www.minsocam.org/ammin/AM18/AM18_493.pdf]
Keskinen, Mary, 1981, Petrochemical investigation of the Shadow Lake piemontite zone, eastern Sierra Nevada, California: American Journal of Science, v. 281, no. 7, p. 896-921.