Mines Repository (Colorado School of Mines)
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Boleite
Photographed by Ron Wolf.Dark blue cubes of boleite on orange and green matrix, Amelia mine, Boleo district, Santa Rosalia, Baja California Sur, Mexico
Brittle sea star – Encrinaster tischbeinianus
Photographed by Ron Wolf.Fossilized brittle sea star on the surface of a dark grey fine-grained sedimentary rock
Trilobite – Pseudogygites latimarginata
Photographed by Ron Wolf.Fossil trilobite on fine-grained dark matrix
Inyoite with meyerhofferite
Photographed by Ron Wolf.Vitreous translucent white inyoite and meyerhofferite occurring together, Nacimiento Sijes, Sijes, Salta Province, Argentina
Eosphorite on rose quartz
Photographed by Ron Wolf.Rose quartz with brown flecks of eosphorite
Ammonite – Parkinsonia parkinsoni
Photographed by Ron Wolf.Fossil ammonite with dark slightly pearlescent surface
Sea Star – Devonaster eucharis
Photographed by Ron Wolf.Fossil sea star (starfish), showing stubby rays, on grey matrix