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| Geology George responds to ID quest: |
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| probably rhyolite a volcanic rock |
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| the lines are leisengang rings which show iron etc. moving through the rock |
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| the broad red stripes could be a silica strain |
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| could host opal (those are my shoes) |
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| volcanic rocks are good hosts for precious metal (gold and silver mined in area) |
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| expect to find agates "fire agates" |
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| Thanks G. George, we'll keep our eyes open!!! |
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