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Gemstones, Minerals & Fossils
Gemstones, Minerals & Fossils
Gladstone northeast Tas
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<blockquote data-quote="Lefty" data-source="post: 448303" data-attributes="member: 2976"><p>Yes, I found a few small bits of green and purple fluorite at one of the topaz sites.</p><p></p><p>Is the presence of fluorine the reason behind the scaly, beaten-up looking surface of the smoky crystals I found inside a hydrothermal pipe about a metre and a half long? The crystals inside the pipe had the look of something that had been dipped in acid (though many were very clean and clear inside) while the crystals just a foot away outside the pipe had bright, shiny faces like most of the Lowmead crystals. I read somewhere that fluorine can become concentrated in some hydrothermal pipes and attack the surface of quartz crystals in late-stage formation. Is this correct?</p></blockquote><p></p>
[QUOTE="Lefty, post: 448303, member: 2976"] Yes, I found a few small bits of green and purple fluorite at one of the topaz sites. Is the presence of fluorine the reason behind the scaly, beaten-up looking surface of the smoky crystals I found inside a hydrothermal pipe about a metre and a half long? The crystals inside the pipe had the look of something that had been dipped in acid (though many were very clean and clear inside) while the crystals just a foot away outside the pipe had bright, shiny faces like most of the Lowmead crystals. I read somewhere that fluorine can become concentrated in some hydrothermal pipes and attack the surface of quartz crystals in late-stage formation. Is this correct? [/QUOTE]
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Gemstones, Minerals & Fossils
Gemstones, Minerals & Fossils
Gladstone northeast Tas
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