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Gemstones, Minerals & Fossils
Gemstones, Minerals & Fossils
Please help me identify this stone, is it possibly green quartz?
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<blockquote data-quote="Hawkear" data-source="post: 638391" data-attributes="member: 4728"><p>My interest was tweaked because I have seen rocks like this before and had been racking my brain to remember but have just remembered now. It was in Gippsland on the Tanjil river when I was dredging for gold in the days before it was banned. </p><p>The area I was in was called Blue Rock, now the site of the Blue Rock dam. The rocks stood out in the river bed out from the other rocks with their pale greenish blue look. I also remember reading a report on the goldfield by an early geologist for the Victorian geological survey who suggested the "blue" rocks were igneous dyke material (probably now identified as peridotite or Kimberlite) associated with the ancient Volcanics in the area.</p><p>It never occurred to me to examine my fines for diamonds or other precious stones.</p><p>Does the Sydney museum offer an identification service? Also look at geological maps for the area and they provide a clue.</p><p>PS regarding the veining, dykes in situ over time can suffer cracking and infusion with quartz and other mineral charged fluids resulting in quartz veining. They can even be highly auriferous and the best known is the Morning Star Dyke at Woods Point where the miners just followed the dyke downwards encountering quartz vein after quartz vein which carried very rich gold.</p></blockquote><p></p>
[QUOTE="Hawkear, post: 638391, member: 4728"] My interest was tweaked because I have seen rocks like this before and had been racking my brain to remember but have just remembered now. It was in Gippsland on the Tanjil river when I was dredging for gold in the days before it was banned. The area I was in was called Blue Rock, now the site of the Blue Rock dam. The rocks stood out in the river bed out from the other rocks with their pale greenish blue look. I also remember reading a report on the goldfield by an early geologist for the Victorian geological survey who suggested the "blue" rocks were igneous dyke material (probably now identified as peridotite or Kimberlite) associated with the ancient Volcanics in the area. It never occurred to me to examine my fines for diamonds or other precious stones. Does the Sydney museum offer an identification service? Also look at geological maps for the area and they provide a clue. PS regarding the veining, dykes in situ over time can suffer cracking and infusion with quartz and other mineral charged fluids resulting in quartz veining. They can even be highly auriferous and the best known is the Morning Star Dyke at Woods Point where the miners just followed the dyke downwards encountering quartz vein after quartz vein which carried very rich gold. [/QUOTE]
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Gemstones, Minerals & Fossils
Gemstones, Minerals & Fossils
Please help me identify this stone, is it possibly green quartz?
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