Comments on: Crystals http://oaklandgeology.wordpress.com/2011/02/04/crystals/ focused on, near and under Oakland, California Sat, 18 May 2013 23:16:21 +0000 hourly 1 http://wordpress.com/ By: negxl1 http://oaklandgeology.wordpress.com/2011/02/04/crystals/#comment-1921 Mon, 25 Apr 2011 06:05:02 +0000 http://oaklandgeology.wordpress.com/?p=909#comment-1921 Andrew:
I seem to remember from past posts that you’re against taking samples, but I think prying ONE broken shard out & doing that acid test is indicated, in the name of science!

]]> By: Andrew http://oaklandgeology.wordpress.com/2011/02/04/crystals/#comment-1785 Sat, 12 Feb 2011 19:53:59 +0000 http://oaklandgeology.wordpress.com/?p=909#comment-1785 JH, 511.org shows a bus route almost all the way to the lake from the Hayward BART station. You access the lake from Lake Chabot Regional Park in Castro Valley. I agree that Oakland/San Leandro’s end of the lake is harder to access, but 511.org shows a route from San Leandro BART. You have to specify Lake Chabot Park, San Leandro.

Thanks for showing your fossil. I’m not sure, but I think most of the rocks around Pinole are marine, which points to it being a shell. A tree seed would be pretty unlikely in a sandstone, and the veining pattern in the fossil is very regular. So much depends on the missing piece!

]]> By: Jafafa Hots http://oaklandgeology.wordpress.com/2011/02/04/crystals/#comment-1782 Sat, 12 Feb 2011 07:47:14 +0000 http://oaklandgeology.wordpress.com/?p=909#comment-1782 I looked into finding a way to get there to check these out for myself. But I am disabled (can’t drive but can walk and hike and bike fine) and to my dismay have found that although there are many great regional parks in the east bay, there’s essentially no public transportation to get to them.

Which means that a 6 mile hike within a park might require another 6 miles round trip added to the hike to get TO the park entrance.

I did find this strange unidentified fossil in Pinole though:
http://www.flickr.com/photos/jafafahots/3239604469/

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