Hematite with Quartz
Big Bertha Mine (Veta Grande Mine), Dome Rock Mts, La Paz Co., Arizona, USA

Cobaltite
Hakansboda, Lindesberg, Sweden

Fluorite with Sphalerite
Milpo Mine, Atacocha mining district, Pasco Province, Peru

Mimetite
Mt. Bonnie Mine, Northern Territory, Australia

Franklinite on Calcite
Franklin, Sussex Co., New Jersey, USA

Adamite
Tsumeb, Namibia