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Are opals found in rock cavities?

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  • Are opals found in rock cavities?


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Boulder Opal Collection The rough stones pictured are Boulder Opal, a beautiful gemstone found only in ... when the Opal, as pebble rock, filled cavities ...
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Positive: 66 %
Australian Opal- Opal is found lining and filling cavities in igneous and sedimentary rocks, ... See more about Opals, Minerals and Cavities. ...
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Positive: 63 %

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• 'Potch' is a miners' term for a grey common opal found on the ... Opals that contain red are the ... Opal is also found in cavities in volcanic ...
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Positive: 66 %
ABOUT OPALS ... Boulder opal is found in select areas of ... over time has filled in the minute cavities and voids within the host rock ...
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Positive: 61 %
Oregon Gemstone Mining ... Hard-rock mining of the basalt is sometimes done, ... or opal precipitate within the cavities of rhyolite, welded tuff, ...
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Positive: 47 %
... they had been found. Today, the fire opal is ... fire opal deposits in the world lie. Rock strata ... fire opal Fire opals are ...
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Positive: 24 %

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