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22 May-23:56:12 Re: provide miller indices in practice please (Roger Warin)
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22 May-02:23:18 The mizunaka collection - ludlamite (Am Mizunaka)
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21 May-16:01:12 Provide miller indices in practice please (Robson Vieira)
21 May-12:49:16 Re: collection of michael shaw (Michael Shaw)
20 May-22:03:46 Re: collection of volkmar stingl (Volkmar Stingl)
20 May-20:45:03 Re: don lum collection (Don Lum)
20 May-19:11:50 The mizunaka collection - stalactite (Am Mizunaka)
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20 May-15:32:02 Re: mineral identification tips (Robson Vieira)
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19 May-14:28:05 Re: european mineral and mining museums (Robert Seitz)
19 May-13:04:59 Re: collection of volkmar stingl (Volkmar Stingl)
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19 May-08:08:17 Re: collection of joseph d'oliveira (Joseph Doliveira)
19 May-02:34:57 The mizunaka collection - quartz (Am Mizunaka)

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All Topazes are sensitive to the sunligth?
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nurbo




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PostPosted: Jul 11, 2009 01:34    Post subject: Re: All Topazes are sensitive to the sunligth?  

Hi Tracy,
That would be great, Id be happy to add some of your trimmings into the mix, my email is davidbruno(dot)uk(at)gmail(dot)com if you want to contact me whenever you've finished the somewhat nerve wracking process of trimming the specimen Ill give you my home address.
I havent been able to do the cutting and polishing of the Mexican stuff yet since I busted a sacral nerve in my back and have been pretty much unable to move for the last few days. Just as soon as Im fully mobile again Ill start a new thread (since were off topic here) with the details of what Im planning to do.
db
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nurbo




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PostPosted: Sep 26, 2009 17:49    Post subject: Re: All Topazes are sensitive to the sunligth?  

Update ... Ive had the Fluorite in the sun for over 2 months now and no sign of any colour change when compared to a control piece I keep in an envelope in a cool cellar.
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