Milky Quartz Vein in Host Rock
Silicon Dioxide (SiO2)
mineral
Category
Sedimentary (Chemically Precipitated) Or Metamorphic
Browse sedimentary (chemically precipitated) or metamorphic specimens identified by the Rock Identifier community.
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Quartz Vein / Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Milky or Citrine-tinted)
Silicon Dioxide (SiO2)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Pyrite in Quartz
Iron Sulfide (FeS2) on Silicon Dioxide (SiO2)
mineral
Polished yellow calcite pendant
Calcite (CaCO₃)
mineral
Jasper (Green)
Silicon dioxide (SiO2)
Mineral/Sedimentary
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Sandstone with Liesegang Rings
Quartzose Sandstone with Iron Oxide Precipitation
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Small quartz-rich pebble or rock fragment
Quartz (silicon dioxide, SiO₂), possibly with iron-oxide staining or host-rock inclusions
mineral
Limonite (Yellow Ochre)
Limonite (an amorphous mixture of hydrated iron oxides, primarily FeO(OH)·nH2O)
mineral
Veined Limestone (Micrite) with Quartz/Calcite Veins
Calcium Carbonate (CaCO3) with Silicate or Carbonate inclusions
sedimentary
Fossiliferous Limestone
Calcite (CaCO3) matrix with biogenic fragments
sedimentary
Green Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Moqui Marble
Ironstone Concretion (Goethite/Hematite)
sedimentary
Sandstone with Manganese Dendrites
Arenite (mostly SiO2) with Manganese Oxide inclusions (MnO2)
sedimentary
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Botryoidal Pyrite
Iron Sulfide (FeS2)
mineral
Banded iron formation fragment (polished ironstone)
Banded iron formation; hematite/magnetite-rich chert, commonly approximated as Fe₂O₃–Fe₃O₄ with SiO₂
sedimentary
Limestone Pebble
Calcite-rich Sedimentary Rock (CaCO3)
sedimentary
Ferruginous Sandstone (Ironstone)
Sedimentary rock with Limonite/Goethite cement
sedimentary
Flint (Chert)
Cryptocrystalline Silica (SiO2)
sedimentary
Quartz pebble
Silicon dioxide (SiO2)
mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Calcite
Calcium Carbonate (CaCO3)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Calcite
Calcium Carbonate (CaCO3)
mineral
Likely ironstone concretion
Iron-oxide-cemented sedimentary concretion, commonly hematite/goethite-rich
sedimentary
Kaolinite (Kaolin)
Kaolinite (Al2Si2O5(OH)4)
mineral
Aragonite (Onyx Marble)
Calcium Carbonate (CaCO3), Orthorhombic crystal system
mineral
White Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Likely quartz-rich rock (quartzite or vein quartz)
Quartzite, composed predominantly of quartz (SiO₂); exact identification is uncertain from the image
metamorphic
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Polished banded ironstone pebble
Banded iron formation (BIF), chiefly hematite/magnetite and quartz
sedimentary