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Identity Helpunknown Llallagua bright yellow

29th Apr 2017 02:27 UTCTony Peterson Expert

Greetings Bolivian collectors, does anyone recognize the bright yellow mineral in this photo? The specimen is dominated by monazite, cassiterite, and quartz with minor sprays of paravauxite(?):


https://www.mindat.org/photo-818220.html


My best guess from other Mindat photos is hinsdalite but it is similar in texture to some scuzzy monazite I have photographed on Mt Malosa specimens.


thanks,


Tony

29th Apr 2017 12:59 UTCAlfredo Petrov Manager

Too poorly crystallized to tell for sure. Could be hinsdalite, but all the hinsdalite I've seen from there has been better crystallized. My guesses would be: wavellite, variscite, alunite, dickite or nacrite. You'll need to do some tests.
 
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