Interesting.
It looks like an old specimen with hellyerite altered to zaratite but there is a later sprinkling of a blue mineral that needs investigation
regards
Ralph Bottrill
Senior Geologist, Mineralogist and Petrologist
Metallic Minerals and Geochemistry
Mineral Resources Tasmania
PO Box 56, Rosny Park TAS 7018
Phone: 61 3 6233 8359, Fax: 61 3 6233 8338
Email:
rbot...@mrt.tas.gov.au or:
Ralph.B...@dier.tas.gov.au