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Photos 3076 - 3080 of 4187

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Visiting the Serpentine Prairie
Alameda County, California
May 2011

The Serpentine Prairie gets its name from the native rock in the area, an unusual blue serpentine. I usually think of serpentine as being a blue-green or jade green stone, but this variety comes in a real "denim blue jean" color.

The gentleman in this picture is my husband Andrew, our Household Geologist.
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Comments on this photo:

May 12 2011 05:35 GMT MargNZ
Great capture of the man who knows about these things ... nice matching colours Fleur :)
May 12 2011 12:47 GMT senna3
Excellent portrait!
May 12 2011 13:55 GMT larrybenedict
Interesting. ask Andrew for me--what makes the rock blue? I'm guessing the presence of copper ore. Is Andrew really a geologist?
May 12 2011 16:09 GMT Annamaria
Nice portrait of your husband, Fleur...;-))
May 12 2011 16:55 GMT alden PRO
The blue is from the mineral glaucophane, a sodium amphibole that forms at high pressures in former seafloor rocks.
May 13 2011 02:38 GMT larrybenedict
Thanks Alden. Sounds like some ambiguous sodium silicate then...no copper. Maybe a little Iron and Magnesium thrown in for good measure. :-)
May 14 2011 02:26 GMT iyerhari
great details!
May 14 2011 07:28 GMT marijke06
well equiped with mobile-phones :)
May 15 2011 14:41 GMT will
A good guy to have along on any field trip photo shoot..:)
May 15 2011 17:17 GMT charlie26
Nice entry Fleur. Interesting text.

FT1