Blue Lace Agate
Silicon Dioxide (SiO2) - Variety of Chalcedony
mineral
Category
Igneous Or Sedimentary (Anthropogenic Modification)
Browse igneous or sedimentary (anthropogenic modification) specimens identified by the Rock Identifier community.
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Citrine
Crystalline Quartz (SiO2) with iron impurities
mineral
Quartz Mineral
Silicon Dioxide (SiO2)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Peach Moonstone
Potassium Aluminum Silicate, KAlSi3O8
mineral
Blue Lace Agate
Chalcedony (Silicon Dioxide, SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Sodalite
Na8(Al6Si6O24)Cl2 (Sodium Aluminum Silicate Chloride)
mineral
Amazonite
K(AlSi3O8), Microcline (potassium feldspar)
mineral
Amazonite
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Carnelian
SiO2 (Silicon Dioxide) - Carnelian Agate/Chalcedony
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Sodalite
Sodalite (Na8Al6Si6O24Cl2)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Banded Agate (specifically Carnelian Agate)
Silicon dioxide (SiO2) - Chalcedony variety
mineral
Granite
Granite (a broadly defined plutonic igneous rock, often more specifically classified as quartz monzonite or granodiorite based on precise mineral percentages)
igneous
Sandstone (Banded)
Clastic Sedimentary Rock (primarily SiO2 with Iron Oxide staining)
sedimentary
Sandstone
Arenite (SiO2 principal)
sedimentary
Pegmatite with Schorl (Black Tourmaline) and Mica
Pegmatite (complex association of NaAlSi3O8, NaFe3Al6(BO3)3Si6O18(OH)4, and KAl2(AlSi3O10)(OH,F)2)
igneous
Granite Pegmatite with Tourmaline and Muscovite
Pegmatite (Feldspar: KAlSi3O8, Quartz: SiO2, Schorl: NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH))
igneous
Granite
Granite
Igneous
Sodalite
Sodalite - Na8(Al6Si6O24)Cl2
mineral
Basalt
Basalt
Igneous
Banded Metamorphic Rock (likely Quartzite or Serpentinite/Soapstone)
Metamorphic Rock (possibly a banded Quartzite or a foliated Serpentinite/Talc Schist based on appearance, general term for such a rock is 'Banded Metamorphic Rock' or 'Gneiss' if pronounced banding of different minerals)
Metamorphic
Banded Gneiss (Variety of Gneiss)
Gneiss (specifically, a variety exhibiting prominent banding; mineral composition can vary, but often contains quartz, feldspar, mica, and amphibole)
Metamorphic Rock
Marble
Marble (primarily Calcite, CaCO3 or Dolomite, CaMg(CO3)2)
Metamorphic Rock
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone (likely Arkose or Quartz Sandstone)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Quartz on Sandstone
Silicon Dioxide (SiO2) in Lithic Sandstone
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Sandstone
Arenite (SiO2 principal component)
sedimentary
Sandstone (Quartzite Pebble)
Arenite (SiO2)
sedimentary
Chert (Jasper/Flint variant)
Microcrystalline Quartz (SiO2)
sedimentary
Limonite stained Sandstone
Sedimentary rock with Goethite/Limonite (FeO(OH)·nH2O)
sedimentary
Sandstone
Arenite
sedimentary
Sandstone (likely Calcareous or Micaceous)
Clastic sedimentary rock (primarily Quartz with Cementing Agents)
sedimentary
Sandstone (Quartzose Sandstone)
Arenite (primarily SiO2)
sedimentary