Goldstone (Brown)
Aventurine glass
mineraloid (man-made)
Category
Sedimentary Or Igneous (Host Environment)
Browse sedimentary or igneous (host environment) specimens identified by the Rock Identifier community.
Quartzite Pebble
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Quartzite Pebble
Quartzite (primarily SiO2)
metamorphic
Quartzite with Gneissic Banding
Quartzite (primarily SiO2) with mafic mineral inclusions
metamorphic
Quartz Pebble (Hag Stone / Adder Stone)
Silicon Dioxide (SiO2)
mineral
Quartzite (River Pebble)
Metamorphic rock consisting primarily of Quartz (SiO2)
metamorphic
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartzite (River Pebble)
Metamorphic Quartzite (primarily SiO2)
metamorphic
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Quartzite Pebbler
Quartzite (primarily SiO2)
metamorphic
Riverstone (Water-worn Quartzite)
Quartzite (SiO2)
metamorphic
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Quartzite (River Pebble)
SiO2 (recrystallized Quartz)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz with Chalcopyrite and Pyrite
Silicon Dioxide (SiO2) with Copper Iron Sulfide (CuFeS2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Gneissic Schist
Foliated Metamorphic Rock (Schist/Gneiss transition)
metamorphic
Gneiss
Gneissic Metamorphic Rock
metamorphic
Banded Gneiss
Foliated Gneiss
metamorphic
Hematite
Ferric Oxide (Fe2O3)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Dyed Pink Agate Slice
Cryptocrystalline variety of Quartz (SiO2)
mineral
Greenschist
Chlorite schist
metamorphic
Gneiss (with Quartzite and Biotite)
Gneiss containing SiO2 (Quartz), K(Mg,Fe)3AlSi3O10(OH)2 (Biotite), and (K,Na,Ca)AlSi3O8 (Feldspar)
metamorphic
Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Garnet (Almandine)
Almandine (Fe3Al2(SiO4)3)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Gneiss
Gneiss
metamorphic
Potassium Feldspar
Orthoclase (KAlSi3O8)
mineral
Galena
Lead Sulfide (PbS)
mineral
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Gneiss
Gneiss
metamorphic
Banded Gneiss (with Quartz Vein)
Gneiss (Metamorphic rock of varying mineralogy)
metamorphic
Shale
Shale (claystone/mudstone)
sedimentary
Dalmatian Jasper (Dalmatian Stone)
Peralkaline rhyolite
igneous
Rhyolite
Rhyolite (Extrusive Igneous Rock)
igneous
Vesicular Basalt (Iron-Stained)
Mafic Volcanic Rock (Basalt)
igneous
Quartz
Quartz (SiO2, Silicon Dioxide)
Mineral
Chrysoprase
Chalcedony (cryptocrystalline quartz) with nickel inclusions; SiO2
Mineral