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Bavenite or bikitaite - Foote Lithium Mine, NC

Posted by Don Saathoff  
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Don Saathoff January 03, 2018 06:36PM


Hello All,

I've been through Mindat's Foote mine pics a dozen times (maybe a slight exaggeration) and have settled on either bavenite or bikitaite as the ID of this little spray - it is just over a mm in diameter. Considering the habit (spray) I decided it is most likely bavenite but before I add to the database I'd like more opinions....

Don S
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Reiner Mielke January 03, 2018 08:58PM
The modified terminations and striations along the length of the crystals suggests to me bikitaite not bavenite.
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Don Saathoff January 03, 2018 09:35PM
Thanks, Reiner,
I shied away from bikitaite simply because of the orderliness of the spray. But, the striations were a reason for it's consideration. The terminations also seemed more regular (basal?). Any more suggestions, anybody?

Don S
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Donald B Peck January 04, 2018 01:19AM
Hi Don;

Based on the terminations, I agree with Reiner. Do you have a petrographic scope? If you do, and there is a tiny xl somewhere else on the specimen that could be sacrificed, Bavinite will go to extinction with the long edge parallel to the cross-hairs. Biktaite, if the xl can lie so beta can be seen, will go to extinction about 25o off parallel. Alpha and gamma are too close to 90o to call. I have a feeling that the natural position will expose alpha, not beta. but . . . .

Don
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Don Saathoff January 04, 2018 01:59AM
Hello Don ,
Thank you for the information but I no longer have a petrographic 'scope. I will, however, add your bikitaite vote to the total!

Don S

edit: OK, after three days of fasting, a couple shots (or three) of good whiskey, my vision told me that Reiner & Don are right - I'm uploading the pic as bikitaite.....



Edited 1 time(s). Last edit at 01/07/2018 08:08PM by Don Saathoff.
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