Desert varnish coated rocks in Death Valley Nat'l Park, west of Panamint Springs, CA

Overturned translucent stone from Baker, CA. The glossy red under-glaze covers the undersides of opaque and translucent stones.

SEM image of biological detritus, apparently a diatom in this image.

MCF degrading on varnish coated rock from Bishop, CA, mineral platelets being incorporated.

MCF in depression which is probably enhanced by MCF rather than MCF forming in the depression.

Ultra-thin section of varnish coating. White arrows point to abundant trapped detrital grains.

Granite with desert varnish at Lone Pine, CA.