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who am I? (difficult one) https://www.gemologyonline.com/Forum/phpBB2/viewtopic.php?f=19&t=9203 |
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Author: | cascaillou [ Sat Aug 29, 2009 5:01 pm ] |
Post subject: | who am I? (difficult one) |
I'm a major source for rare earth element, and cascaillou thinks I'm beautiful |
Author: | Barbara O. Ellis [ Sat Aug 29, 2009 5:07 pm ] |
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Euxenite? |
Author: | squeaky [ Sat Aug 29, 2009 5:47 pm ] |
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Monazite....? |
Author: | cnl [ Sat Aug 29, 2009 5:55 pm ] |
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Well I would say Apatite? |
Author: | HME [ Sat Aug 29, 2009 6:03 pm ] |
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Bastnaesite |
Author: | squeaky [ Sat Aug 29, 2009 6:18 pm ] |
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I agree, more likely Bastnaesite... |
Author: | dragonstek [ Sat Aug 29, 2009 7:17 pm ] |
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Hi I think maybe MoDo is right ,Euxenite Euxenite , is made up of : yittrium , calcium , erbium , lanthanum , cerium , uranium , thorium , niobium , chloride . while Bastnaesite : cerium , lanthanum , yittrium , carbonat , flouride . |
Author: | squeaky [ Sat Aug 29, 2009 7:34 pm ] |
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But Euxenite is normally flattened crystals and is brown/black rather than the orange/red I see in this stone isn't it? I guess we don't know what size that stone IS do we???? I'll stay with Bastnaesite. |
Author: | gem-n00b [ Sat Aug 29, 2009 7:46 pm ] |
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I'm going to guess Xenotime, not because I think it is, but because no one else will. |
Author: | squeaky [ Sat Aug 29, 2009 7:58 pm ] |
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Karim, you're so naughty.....!!! |
Author: | gem-n00b [ Sat Aug 29, 2009 8:03 pm ] |
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Hey, it contains yttrium as well as dysprosium, erbium, terbium, and ytterbium. Plus, it can be yellowish, brownish, reddish! Granted, I've never heard of a faceted example... |
Author: | cascaillou [ Sat Aug 29, 2009 8:08 pm ] |
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Well down HME, I thought that would be a difficult one...it is indeed bastnaesite (which is a major source of cerium) This mineral can be confused with parisite and synchisite (two other orange rare earth carbonates), but these have a lower density. I think bastnasite also exists in some 'grassy' green color which I like a lot too. |
Author: | Barbara O. Ellis [ Sat Aug 29, 2009 8:49 pm ] |
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Good on ya, Kevin! |
Author: | HME [ Sun Aug 30, 2009 1:10 pm ] |
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Thank you Princess MoDo. In good gemologist form, I gathered my tools, carefully observed the facts, recorded details, and then decided that it just looked a lot like bastnaesite. |
Author: | dragonstek [ Sun Aug 30, 2009 1:52 pm ] |
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Hi Well done kevin , good thing this was just a quiz of i would have flunked lol, but its fun |
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