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PhotosCylindrite - Poopó Province, Oruro Department, Bolivia

22nd Sep 2012 17:08 UTCErik Vercammen Expert

04072990014950557552777.jpg
Copyright © Rob Lavinsky & irocks.com
The caption says 'this mineral belongs to the only group of minerals with cylindric forms'. Two remarks:

1) which group is mentioned?

2) at least the serpentine group (chrysotile) forms fibers with cylindrical crosscut.

22nd Sep 2012 19:00 UTCFrank de Wit Manager

picture was uploaded in 2011

tubulite now also does ;)

22nd Sep 2012 20:44 UTCAlfredo Petrov Manager

And halloysite - in the clay group.

22nd Sep 2012 20:55 UTCErik Vercammen Expert

Shouldn't the caption be adapted?

23rd Sep 2012 06:12 UTCFrank de Wit Manager

I wish I could

I often wish I could :-)
 
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