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<p>[QUOTE=&quot;aaroncab, post: 1110144, member: 3974&quot;]Mark may know more - but you know a lot! Thanks again Komo!</p><p><br /></p><p>Just a comment on Basalt - it may &quot;acquire magnetic signatures as it cools&quot; (I think that means the orientation of it&#039;s component minerals, which gets locked in as it cools.). but AFAIK - it is definitely not attracted to magnets.</p><p><br /></p><p>EDIT - again, w&#039;otter I know... According to a commenter here:</p><p><br /></p><p><a href="https://www.mindat.org/mesg-262106.html" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.mindat.org/mesg-262106.html" rel="nofollow">https://www.mindat.org/mesg-262106.html</a></p><p><br /></p><p>&quot;Basalt or andesite, no matter, both can possess zones locally enriched in magnetite which will attract magnets.&quot;</p><p><br /></p><p>Not that I didn&#039;t believe you Komo - I&#039;d just never heard of it![/QUOTE]</p><p><br /></p>

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