Brian Kosnar Mineral Classics

hematite

hematite pseudomorphs after siderite with goethite and quartz (var: smoky)

goethite

goethite

goethite with onegite

goethite with onegite

copper pseudomorph after azurite ("copper rose")

copper pseudomorph after azurite ("copper rose") with malachite

copper pseudomorph after azurite ("copper rose")

copper pseudomorph after azurite ("copper rose")

copper pseudomorph after azurite ("copper rose") with malachite

copper pseudomorph after azurite ("copper rose")

copper pseudomorph after azurite ("copper rose")

copper pseudomorph after azurite ("copper rose") with malachite

copper pseudomorph after azurite ("copper rose")

copper pseudomorph after azurite ("copper rose")

copper pseudomorph after azurite ("copper rose")

copper (large "spinel"-twin)

copper ("spinel"-twin)

copper ("spinel"-twin and "hoppered" crystals)