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Gemstones, Minerals & Fossils
Gemstones and Minerals
❓Your Mineral Identification Questions answered here
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<blockquote data-quote="user 4386" data-source="post: 614667" data-attributes="member: 4386"><p>Oxygen more than light is the problem - oxidises to iron sulphate I think (a white powder -the mineral melanterite, FeSO47H2O.) . Some sort of clear spray as a thin layer shuts out oxygen.</p><p>If you found it close to old coal dumps it might be worth breaking some coal open to get fresher material - it can be really beautiful. It can be really abundant in places in coal seams - I have loaded many 5 gallon buckets within a few hours in Latrobe Valley mines, of disks up to 15 cm or so in diameter. It can look good left in a coal matrix - just give the surface a light clear spray, because it always breaks down over time otherwise. The to[ one looks good with its leaf fossils in the coal, eh?</p><p>Happy collecting!</p><p></p><p><img src="https://www.prospectingaustralia.com/forum/img/member-images/4386/1626850185_marcasite_in_coal4.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p><img src="https://www.prospectingaustralia.com/forum/img/member-images/4386/1626850185_marcasite_in_coal3.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p><img src="https://www.prospectingaustralia.com/forum/img/member-images/4386/1626850185_marcasite_in_coal2.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p><img src="https://www.prospectingaustralia.com/forum/img/member-images/4386/1626850186_marcasite_in_coal.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="user 4386, post: 614667, member: 4386"] Oxygen more than light is the problem - oxidises to iron sulphate I think (a white powder -the mineral melanterite, FeSO47H2O.) . Some sort of clear spray as a thin layer shuts out oxygen. If you found it close to old coal dumps it might be worth breaking some coal open to get fresher material - it can be really beautiful. It can be really abundant in places in coal seams - I have loaded many 5 gallon buckets within a few hours in Latrobe Valley mines, of disks up to 15 cm or so in diameter. It can look good left in a coal matrix - just give the surface a light clear spray, because it always breaks down over time otherwise. The to[ one looks good with its leaf fossils in the coal, eh? Happy collecting! [img]https://www.prospectingaustralia.com/forum/img/member-images/4386/1626850185_marcasite_in_coal4.jpg[/img] [img]https://www.prospectingaustralia.com/forum/img/member-images/4386/1626850185_marcasite_in_coal3.jpg[/img] [img]https://www.prospectingaustralia.com/forum/img/member-images/4386/1626850185_marcasite_in_coal2.jpg[/img] [img]https://www.prospectingaustralia.com/forum/img/member-images/4386/1626850186_marcasite_in_coal.jpg[/img] [/QUOTE]
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Gemstones, Minerals & Fossils
Gemstones and Minerals
❓Your Mineral Identification Questions answered here
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