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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: 484991" data-attributes="member: 4386"><p>"still contained within basalt" - I missed your comment that they occur in basalt. That just about excludes tourmaline completely (extremely rare in basalt, except as a later introduction - basalt magmas lack significant boron). Do you have a photo of the crystals in basalt? I looked at your earlier photos and I assume you nmean the thin crust is basalt - any photos of them embedded in larger bodies of basalt?</p><p></p><p>Any clues as to the name of the basalt unit?</p></blockquote><p></p>
[QUOTE="user 4386, post: 484991, member: 4386"] "still contained within basalt" - I missed your comment that they occur in basalt. That just about excludes tourmaline completely (extremely rare in basalt, except as a later introduction - basalt magmas lack significant boron). Do you have a photo of the crystals in basalt? I looked at your earlier photos and I assume you nmean the thin crust is basalt - any photos of them embedded in larger bodies of basalt? Any clues as to the name of the basalt unit? [/QUOTE]
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Gemstones, Minerals & Fossils
Gemstones and Minerals
❓Your Mineral Identification Questions answered here
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