Sarylakh Au-Sb deposit, Indigirka River Basin, Sakha, Russia

Very small crystals - intergrown needles and plates - of the extremely rare species indigirite. Named after the rather large Indigirka river, this max-two-locality magnesium aluminium carbonate hydroxide pentadecahydrate proved to be quite difficult to picture due to some light reflections. I thus used some filtering, hence the false blue ...

© Łukasz Kruszewski 2019

Very small crystals - intergrown needles and plates - of the extremely rare species indigirite. Named after the rather large Indigirka river, this max-two-locality magnesium aluminium carbonate hydroxide pentadecahydrate proved to be quite difficult to picture due to some light reflections. Specimen provided by Jarek Skupniewski - thanks!

© Łukasz Kruszewski 2019

Native gold with black mineral that I believe is stibnite based on cleavages of some grains not visible here, in massive quartz.

© 2026 Harold Moritz

Silky white fibrous indigirite masses on an analytical mount. Purchased from MinTreasure/Carsten Slotta in 2019. Stack of 15 images.

© Andrew Hodgson