2nd specimen (Glenwood Shale) 

view - Photo PO316 Note: specimen is 1.1 mm wide as shown here
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colored image PO316. Note: color choice is consistent in the following views.
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view - Photo PO324
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colored image PO324
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view - Photo PO318
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colored image PO318
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view - Photo PO319
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colored image PO319
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view - Photo PO315
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colored image PO315
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view - Photo PO314
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colored image PO314
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image PO319 - schematic w/ individual tube sizes
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