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EducationId Western Australian Emerald

11th Jul 2014 21:37 UTCOlivier Mével Expert

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Does anyone have an accurate opinion of the locality of this Beryl Var: Emerald from Western Australia ?

Matrix consists of Feldspar with some Biotite, Mica and Quartz. There is a significant cluster of rehealed crystals of a pale green colour with one significantly more gemmy than the others (Mike Brooke photos)

Cheers

Olivier

11th Jul 2014 23:38 UTCRalph S Bottrill 🌟 Manager

This certainly looks very consistent with material from the Poona mines in WA, most production being from the Aga Khan mine,but I doubt you could be certain. There has been very similar material mined on a small scale from a number of other widely scattered deposits in the state, eg Wonder Well, Mungari and BullaBulling, but these would be less likely. Very hard to prove a location without some detailed geochemical fingerprinting.

12th Jul 2014 05:08 UTCBen Grguric Expert

The geological setting of all the well-known WA emerald occurrences are almost identical. The association of emerald crystals with small felsic pods or boudins embedded in foliated mica matrix like your specimen is more typical of Wonder Well, however. I don't recall seeing this style very often at Poona, mostly emerald crystals embedded in phlogopite.

12th Jul 2014 21:56 UTCOlivier Mével Expert

Thanks Ralph and Ben

Mike Brooke, this specimen i got from, supposed it may come from Wonder Well but he wasn't sure

Your assessment was greatly welcome

Cheers

Olivier
 
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