Greenstone
Metabasalt / Chlorite-Epidote Schist
Category
Browse not a rock (animated character) specimens identified by the Rock Identifier community.
Greenstone
Metabasalt / Chlorite-Epidote Schist
Amethyst
Amethyst (Silicon Dioxide - SiO2 with Iron impurities)
Green Quartz (Prasiolite/Adventurine/Jasper)
Silicon Dioxide (SiO2)
Chert (Iron-stained)
Microcrystalline Quartz (SiO2)
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Moss Agate
Chalcedony (Silicon Dioxide) with dendritic inclusions (SiO2)
Tiger's Eye
Pseudomorph of quartz after crocidolite (SiO2 with iron oxide inclusions)
Amethyst
Crystalline Quartz (SiO2) with iron impurities
Quartzite
Quartzite
Red Jasper
Silicon Dioxide (SiO2) with Hematite impurities
Nephrite Jade (Pounamu)
Nephrite [Ca2(Mg, Fe)5Si8O22(OH)2]
Gneiss
Gneiss
Fluorite (Rainbow Fluorite)
Calcium Fluoride (CaF2)
Smoky Quartz
Silicon Dioxide (SiO2)
Basalt
Mafic Volcanic Basalt (Major minerals: Plagioclase feldspar, Pyroxene; Minor: Olivine, Magnetite)
Basalt
Basalt (Mafic Extrusive Igneous Rock)
Dendritic Agate / Moss Agate
Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions
Gold Nugget
Native Gold (Au)
Yellow Jasper
Chalcedony (SiO2) with Goethite/Iron oxide inclusions
Carnelian
Chalcedony (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with iron inclusions
Jasper
Silicon Dioxide (SiO2)
Quartzite
Quartzite (primarily SiO2)
Green Fluorite
Fluorite (Calcium Fluoride - CaF2)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Botryoidal Pyrite
Iron Sulfide (FeS2)
Chert (Iron-stained)
Microcrystalline Quartz (SiO2)
Flint (or Chert)
Cryptocrystalline Quartz (SiO2)
Pyrite
Iron Disulfide (FeS2)
Gneiss
Gneiss (High-grade metamorphic rock)
Chert (Tan/Grey variety)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Carnelian Agate
Silicon Dioxide (SiO2) with iron oxide impurities
Amazonite (with smoky quartz/feldspar inclusions)
K(AlSi3O8), Microcline (Tectosilicate)
Schist
Mica Schist
Carnelian Agate
Carnelian (Silicon Dioxide - SiO2 with Iron Oxide impurities)
Amethyst (Geode)
Silicon Dioxide (SiO2) with iron impurities
Limonite Concretion (Ironstone)
Limonite (FeO(OH)·nH2O) / Goethite
Indigo Gabbro
Gabbro (Mafic Intrusive Rock)
Unakite
Epidotized Granite
Quartzite Pebble
Quartzite (SiO2)
Greywacke (River Siltstone)
Lithic Wacke (Sandstone subfamily)