Hansblockite, Eskebornite, Eldragónite, Clausthalite, Klockmannite

Specimen ID: 4KR-F5J

Hansblockite : (Cu,Hg)(Bi,Pb)Se2
Eskebornite : CuFeSe2
Eldragónite : Cu6BiSe4(Se2)
Mindat locality:

Photo added to mindat.org

Reflected plane polarized light digital image in air illustrating laths of hansblockite (pleochroic in shades of cream to slightly darker greyish cream) in an assemblage with eskebornite (brown), kruta'ite-penroseite (grey), clausthalite (pale bluish-white) and klockmannite (deep blue to grey pleochroism) This is from the type specimen: BM 2015,136 Foerster H-J, Bindi L, Stanley C J & Grundmann G Hansblockite, (Cu,Hg)(Bi,Pb)Se2, the monoclinic polymorph of grundmannite: a new mineral from the Se mineralization at El Dragon (Bolivia) (in press Mineralogical Magazine)
Chris Stanley - 13th September 2016
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