ncat BDUK M1775 Cobaltite, Kibblehouse Quarry, Perkiomenville, Marlborough Township, Montgomery County, Pennsylvania, USA January 1, 2024 Steve North and Central Americas Pennsylvania United States Dark grey pseudocubic crystal embedded in matrix. Ex Bernie Day Collection. Width of view 6mm. Stack of 30 images. Click on the image below for a higher resolution version.
Australasia Australia South Australia ncat JP3805 Cobaltaustinite after Cobaltite, Dome Rock Copper Mine, Boolcoomatta Station, Olary Province, South Australia May 26, 2022
Australasia Australia Queensland 0940 Erythrite, Smolyaninovite after Cobaltite, Mount Cobalt Mine, Selwyn District, Cloncurry Shire, Queensland February 4, 2023