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Gemstones, Minerals & Fossils
Fluorescent Minerals
Opal mining: If It Glows Do I Want It
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<blockquote data-quote="Pete E" data-source="post: 661035" data-attributes="member: 18110"><p>My sum total knowledge of opal mining is from watching Opal Hunters on TV so take this for what it's worth <img class="smilie smilie--emoji" loading="lazy" alt="😃" title="Grinning face with big eyes :smiley:" src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f603.png" data-shortname=":smiley:" />...</p><p></p><p>When they were using a blacklight, all the white opal type rocks glowed, but they had to look at it again in natural light to pick out the opal with colour, (the good stuff) and sort that from the more common potch ie a bland looking type of opal with no colour and therefore worthless.....I don't recall seeing whether it worked on black opal or not...</p><p></p><p>Other minerals can glow under a black light, but I wouldn't think they would be common in opal bearing rocks...</p><p></p><p>As an aside, I have also seen scorpions glowing under a blacklight although that was in RSA, so have no idea if your local varieties do the same...</p></blockquote><p></p>
[QUOTE="Pete E, post: 661035, member: 18110"] My sum total knowledge of opal mining is from watching Opal Hunters on TV so take this for what it's worth 😃... When they were using a blacklight, all the white opal type rocks glowed, but they had to look at it again in natural light to pick out the opal with colour, (the good stuff) and sort that from the more common potch ie a bland looking type of opal with no colour and therefore worthless.....I don't recall seeing whether it worked on black opal or not... Other minerals can glow under a black light, but I wouldn't think they would be common in opal bearing rocks... As an aside, I have also seen scorpions glowing under a blacklight although that was in RSA, so have no idea if your local varieties do the same... [/QUOTE]
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Gemstones, Minerals & Fossils
Fluorescent Minerals
Opal mining: If It Glows Do I Want It
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