Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
mineral
Category
Sedimentary (Secondary Classification For A Weathered Mineral Specimen)
Browse sedimentary (secondary classification for a weathered mineral specimen) specimens identified by the Rock Identifier community.
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Fossilized Gastropod Shell
Gastropoda (Class)
sedimentary
Greywacke (likely)
Greywacke (a type of sandstone)
Sedimentary
Limonite (Ironstone)
Limonite (mixture of hydrated iron(III) oxide-hydroxides)
mineral
Limonite (Iron Ore/Sandstone mixture)
Limonite (FeO(OH)·nH2O) often mixed with Goethite and sedimentary matrix
mineral
Quartzite (Ferruginous)
Metamorphosed Quartz Sandstone (SiO2 with Iron oxide staining)
metamorphic
Sandstone Geode (Unbroken)
Siliciclastic sedimentary rock (primarily Quartz)
sedimentary
Chert (Jasper/Mudstone variety with Oxidation)
Silicon dioxide (SiO2)
sedimentary
Carnelian Agate
Carnelian (SiO2 with iron oxide impurities)
mineral
Sandstone
Sandstone (clastic sedimentary rock), primarily SiO2
sedimentary
Sandstone (Quartzose Sandstone)
Arenite (primarily SiO2)
sedimentary
Quartzite
Quartzite (SiO2)
metamorphic
Sandstone with Foliose Lichen
Arenite (Rock matrix) with Xanthoparmelia or Flavoparmelia (Lichen genus)
sedimentary
Iron-stained Quartz (with Limonite/Hematite)
Silicon Dioxide (SiO2) with Iron Oxide inclusions (FeO(OH) or Fe2O3)
Mineral
Granite
Phaneritic Igneous Rock (Granite)
igneous
Sandstone (Green/Yellow Siltstone variant)
Arenite or Siltstone (primarily SiO2 with mineral staining)
sedimentary
Chert (Flint) River Pebble
Microcrystalline Quartz (SiO2)
sedimentary
Limestone with Chert or Siltstone bands
Sedimentary carbonate rock (CaCO3) often with siliceous impurities
sedimentary
Zircon
Zircon (Zirconium Silicate - ZrSiO4)
mineral
Turquoise
CuAl6(PO4)4(OH)8·4H2O (Hydrated copper and aluminium phosphate)
mineral
Pink Granite
Phaneritic Plutonic Igneous Rock (Granite)
igneous
Basalt River Stone
Basalt (Mafic volcanic rock)
igneous
Basalt with Weathered Rind
Basalt (Extrusive Mafic Igneous Rock)
igneous
Mookaite Jasper
Silicon Dioxide (SiO2) with various mineral inclusions
sedimentary
Goethite pseudomorph after Pyrite
Goethite (FeO(OH)) pseudomorph after Pyrite (FeS2)
mineral
Turquoise
CuAl6(PO4)4(OH)8·4H2O (Hydrous phosphate of copper and aluminium)
mineral
Calcite
Calcite (Mineral, Calcium Carbonate - CaCO3)
Mineral
Ferruginous Sandstone
Sandstone (arenite) with Limonite/Goethite cement
sedimentary
Limestone with Iron Inclusions
Calcium Carbonate (CaCO3) with Hematite/Limonite
sedimentary
Quartz
Quartz (SiO2 - Silicon Dioxide)
Mineral, often found as detrital grains in sedimentary rocks
Gneiss (with Quartzite and Biotite)
Gneiss containing SiO2 (Quartz), K(Mg,Fe)3AlSi3O10(OH)2 (Biotite), and (K,Na,Ca)AlSi3O8 (Feldspar)
metamorphic
Ironstone Concretion
Ferruginous Sandstone / Iron-rich Sedimentary Rock
sedimentary
Chert (Iron-stained)
Microcrystalline Quartz (SiO2)
sedimentary
Hematite (Concretion)
Iron(III) oxide (Fe2O3)
mineral
Bauxite
Bauxite (Mixture of Al(OH)3, AlO(OH), and Fe2O3)
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Brown Agate
Cryptocrystalline Silica (SiO2)
sedimentary
Quartz (likely Milky Quartz)
Quartz (SiO₂ - Silicon Dioxide)
Mineral
Sandstone with Quartz Vein
Arenite with SiO2 intrusion
sedimentary
Sandstone (Quartzite-rich)
Clastic sedimentary rock (SiO2 primarily)
sedimentary
Sandstone (Greywacke/Lithic Sandstone)
Clastic Sedimentary Rock (Lithic Sandstone)
sedimentary
Quartz (Common or Milky Quartz)
Silicon Dioxide (SiO2)
mineral