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Gemstones, Minerals & Fossils
Gemstones and Minerals
❓Your Mineral Identification Questions answered here
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<blockquote data-quote="Hawkear" data-source="post: 667354" data-attributes="member: 4728"><p>Basalt? Have detected along railway lines and some bluestones react strongly with the detector and others don’t. Basalts can be iron rich and when cooling their magnetic particles can line up with the earths magnetic field before solidifying and thereby providing a magnetic effect. </p><p>It would be hard to judge from its appearance as the rock has been waterworn and to get a true picture of the rock you would need to crack it to expose a fresh un weathered surface. </p><p>Also look at Geology maps of the area to see what rocks outcrop in the area.</p></blockquote><p></p>
[QUOTE="Hawkear, post: 667354, member: 4728"] Basalt? Have detected along railway lines and some bluestones react strongly with the detector and others don’t. Basalts can be iron rich and when cooling their magnetic particles can line up with the earths magnetic field before solidifying and thereby providing a magnetic effect. It would be hard to judge from its appearance as the rock has been waterworn and to get a true picture of the rock you would need to crack it to expose a fresh un weathered surface. Also look at Geology maps of the area to see what rocks outcrop in the area. [/QUOTE]
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Gemstones, Minerals & Fossils
Gemstones and Minerals
❓Your Mineral Identification Questions answered here
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