Pyrite (Iron Pyrite)
Iron Sulfide (FeS2)
mineral
Category
Mixed: Igneous And Sedimentary
Browse mixed: igneous and sedimentary specimens identified by the Rock Identifier community.
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Hematite
Iron(III) oxide (Fe2O3)
mineral
Chalcedony (Blue/Grey Lace Agate)
Silicon Dioxide (SiO2)
mineral
Sandstone with Liesegang Rings
Arenite with Iron Oxide Liesegang Banding
sedimentary
Black Tourmaline
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Citrine (Heat-Treated Amethyst)
Silicon Dioxide (SiO2)
mineral
Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Citrine
Silicon Dioxide (SiO₂)
mineral
Moonstone
Orthoclase Feldspar ((K,Na)AlSi3O8)
mineral
Yellow Quartz (Citrine or Iron-Stained Quartz)
Silicon Dioxide (SiO2)
mineral
Yellow Quartz (Citrine or Iron-Stained Quartz)
Silicon Dioxide (SiO2)
mineral
Citrine
Silicon Dioxide (SiO2)
mineral
Yellow Quartz (Citrine Quartz)
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Quartz (Silicon Dioxide), Formula: SiO2
mineral
Rough Sapphire (Corundum)
Corundum (Al2O3)
mineral
Citrine
Quartz (Silicon Dioxide - SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Yellow Quartz (Citrine Quartz or Yellow Chalcedony)
Silicon Dioxide (SiO2)
mineral
Yellow Quartz (Citrine Quartzite)
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO₂)
mineral
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Cloudy Quartz / Quartz Tumble
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Black Tourmaline
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz / Quartz Cluster
Silicon Dioxide (SiO2)
mineral
Quartz (Engineered Stone Countertop)
Silicon Dioxide (SiO2) within a resin matrix
igneous
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Pyrite
Iron Disulfide (FeS2)
mineral
Gneiss (Schistose)
Gneiss
metamorphic
Gneiss
Gneiss
metamorphic
Gneiss (Metamorphic Cobble)
Gneiss
metamorphic
Granite Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Banded Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Carnelian
Carnelian (Silicon Dioxide - SiO2)
mineral
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic