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Mineralpedia Details for Edgarbaileyite

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Edgarbaileyite

Edgarbaileyite

Dr. Edgar Herbert Bailey is the namesake of this mineral as a distinguished geologist and mercury specialist for the United States Geological Survey. Edgarbaileyite is a rare mineral that can be found only in the United States in localities in Arkansas at Funderburk prospect, in California in the Clear Creek claim and Socrates mine, in Nevada in the Red Bird mine, and in Texas in the Mariposa mine. It occurs as a secondary mineral that likely results from the reaction of mercury with quartz in, as of yet, unknown conditions. Edgarbaileyite is photosensitive and will darken under exposure to ultraviolet, infrared, and X-ray radiations as well as under visible light.

Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/edgarbaileyite.pdf

Formula
Hg1+6Si2O7 
Crystal System
Monoclinic 
Crystal Habit
Platy 
Cleavage
None, None, None 
Luster
Vitreous - Resinous 
Color
yellow, orangish yellow, dark olive green, yellowish green, dark green brown 
Streak
yellow green 
Class
Monoclinic - Prismatic 
Fracture
Brittle 
Hardness
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Mindat
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Edgarbaileyite from Clear Creek mine, San Benito Co., California, United States

Edgarbaileyite
            from Clear Creek mine, San Benito Co., California, United States

Bright yellow botryoidal crystals lining a 3mm vug.

Olive green spherical crystal groups. The small sphere is 1mm and the larger is 2.5mm. 

Click thumbnail images for larger view.

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