Mica Schist
Crystalline Schist (often containing Muscovite, Biotite, and Quartz)
metamorphic
Category
Sedimentary Rock (Possibly Conglomerate Or Breccia With A Quartz Vein)
Browse sedimentary rock (possibly conglomerate or breccia with a quartz vein) specimens identified by the Rock Identifier community.
Gneiss (Metamorphic Rock)
Gneiss (variable mineral formula primarily containing Quartz, Feldspar, and Mica)
metamorphic
Turquoise
Turquoise (Hydrated phosphate of copper and aluminium), CuAl6(PO4)4(OH)8·4H2O
mineral
Quartzite Pebble (River Rock)
Quartzite (SiO2)
metamorphic
Druzy Quartz on Host Rock
Silicon Dioxide (SiO2)
mineral
Mica Schist
Mica Schist (Composition: Muscovite, Biotite, Quartz, Feldspar)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Banded Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Petrified Wood
Silicified Wood (primarily Chalcedony or Quartz, SiO2)
sedimentary
Chert / Quartz Pebble
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Sandstone (with cross-bedding)
Arenite (composed primarily of Quartz: SiO2)
sedimentary
Sandstone
Arenite (composed primarily of Quartz: SiO2)
sedimentary
Gold Ore
Native Gold (Au) in Matrix
mineral
Sandstone
Arenite (SiO2 + various cementing minerals)
sedimentary
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Quartz Crystal (specifically a small Clear Quartz point)
Silicon Dioxide (SiO2)
mineral
Pink Botswana Agate
Silicon Dioxide (SiO₂), a cryptocrystalline variety of Quartz and Chalcedony
sedimentary
Iron-stained Milky Quartz
Silicon Dioxide (SiO2) with iron oxide inclusions
mineral
Jasper
Cryptocrystalline Quartz (SiO2)
sedimentary
Bloodstone Jasper (Heliotrope)
SiO2 (Silicon Dioxide) - Cryptocrystalline Quartz
sedimentary
Fancy Jasper (Multicolor Agate/Jasper)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Quartz
Quartz (Silicon Dioxide - SiO2)
Mineral
Quartz (Smoky/Grey variety)
Silicon Dioxide (SiO2)
mineral
Sandstone with Liesegang Rings
Arenite with secondary Iron oxide (Limonite/Goethite) precipitation
sedimentary
Quartz pebble (Quartztite fragment)
Silicon Dioxide (SiO2)
mineral
Quartz (Milky/Yellowish Pebble)
Silicon Dioxide (SiO2)
mineral
Chert
Chert (Microcrystalline Silica, SiO2)
sedimentary
Banded Chert (Jasper)
Silicon Dioxide (SiO2)
sedimentary
Dragon Blood Jasper
Epidote with Red Jasper (Quartz-rich aggregate)
sedimentary
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (SiO2)
Mineral
Rough Emerald/Green Beryl
Beryl (Be3Al2(SiO3)6) with trace amounts of Chromium or Vanadium
mineral
Sandstone (Quartz-rich)
Arenite
sedimentary
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Quartz (Milky/Crystalline)
Quartz (Silicon Dioxide, SiO2)
mineral
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with Goethite/Limonite inclusions
sedimentary