A great example of lustrous galena spinel-law twins from the Black Cloud Mine near Leadville. Measures 3.5 x 3.5 cm.
Photo courtesy of Dave Bunk Minerals.
Galena with siderite from the Eagle Mine in Gilman. Measures 4.4 x 7 cm.
Photo courtesy of The Mineral Gallery.
Galena on siderite from the White Raven Mine near Ward, Boulder County. This is a stalacite of siderite that is dusted with galenas. Measures 4 cm tall by 1.5 cm in diameter.
Photo courtesy of UC Minerals.