A gorgeous nummular-shaped specimen embedded in a matrix of kaolinized siltstone. From the Malbunka Copper Mine, Areyonga, Alice Springs, Gardiner Range, Northern Territory, Australia.
Photo credit: Eric C. Graff, posted at Mindat, via Minerals and Fossils.
Lovely! So it's not a cobalt button, "rusting"? What was that word? You could pass this off as an old Roman coin or something. Or is an azurite crystal rarer?
ReplyDeleteI really like the trillium(?) in your header, too.
nummular! just found a new nickname for my baby daughter :D
ReplyDeletei just googled 'nummular'.
ReplyDeletegross! [most references are to a type of eczema]
lol
Is this unique piece for sale?
ReplyDelete