Rock Identifier

Category

Sedimentary (Secondary Classification: Cryptocrystalline Quartz)

Browse sedimentary (secondary classification: cryptocrystalline quartz) specimens identified by the Rock Identifier community.

Learn about Sedimentary (Secondary Classification: Cryptocrystalline Quartz) in the encyclopedia

Cactus Quartz

Cactus Quartz

Chalcedony

Chalcedony

Black Onyx

Black Onyx

Quartzite Sandstone

Quartzite Sandstone

Sandstone

Sandstone

Tube Agate

Tube Agate

Landscape Agate

Landscape Agate

Sweetwater Agate

Sweetwater Agate

Zebra Agate

Zebra Agate

Teepee Canyon Agate

Teepee Canyon Agate

Sunset Agate

Sunset Agate

Shadow Agate

Shadow Agate

Black Limestone with Calcite Veining (Limestone (CaCO3) with Calcite (CaCO3) inclusions) — sedimentary

Black Limestone with Calcite Veining

Limestone (CaCO3) with Calcite (CaCO3) inclusions

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Agate (Silicon dioxide (SiO2)) — mineral

Agate

Silicon dioxide (SiO2)

Red Jasper (beads) (SiO₂ (Silicon Dioxide)) — Mineral, variety of chalcedony (microcrystalline quartz)

Red Jasper (beads)

SiO₂ (Silicon Dioxide)

Mineral, variety of chalcedony (microcrystalline quartz)

Blue Sapphire (Corundum (Al2O3)) — mineral

Blue Sapphire

Corundum (Al2O3)

Blue Agate (Dyed Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Blue Agate (Dyed Chalcedony)

Silicon Dioxide (SiO2)

Smoky Quartz and Biotite Schist (Quartz-Biotite Schist (SiO2 + K(Mg,Fe)3AlSi3O10(F,OH)2)) — metamorphic

Smoky Quartz and Biotite Schist

Quartz-Biotite Schist (SiO2 + K(Mg,Fe)3AlSi3O10(F,OH)2)

Chalcedony (Silicon Dioxide (SiO2)) — mineral

Chalcedony

Silicon Dioxide (SiO2)

Amygdaloidal Basalt (Basalt with secondary mineral infilling (SiO2/CO3)) — igneous

Amygdaloidal Basalt

Basalt with secondary mineral infilling (SiO2/CO3)

Petrified Wood (Silicified wood (primarily Silicon Dioxide, SiO2)) — metamorphic

Petrified Wood

Silicified wood (primarily Silicon Dioxide, SiO2)

Petrified Wood (Silicified Wood (primarily SiO₂ - Silicon Dioxide)) — metamorphic

Petrified Wood

Silicified Wood (primarily SiO₂ - Silicon Dioxide)

Banded Agate (Agate (Silicon Dioxide / SiO2)) — mineral

Banded Agate

Agate (Silicon Dioxide / SiO2)

Quartz (Quartz (Silicon Dioxide - SiO2)) — Mineral

Quartz

Quartz (Silicon Dioxide - SiO2)

Vesicular Basalt (Basalt with secondary mineral infilling (Amygdaloidal Basalt)) — igneous

Vesicular Basalt

Basalt with secondary mineral infilling (Amygdaloidal Basalt)

Sandstone with Quartz Vein (Arenite with Crystalline Silica (SiO2)) — sedimentary

Sandstone with Quartz Vein

Arenite with Crystalline Silica (SiO2)

Basalt (with possible quartz veinsing) (Basalt) — igneous

Basalt (with possible quartz veinsing)

Basalt

Red Jasper (Jasper (a variety of Chalcedony, SiO₂)) — Mineraloid (cryptocrystalline quartz)

Red Jasper

Jasper (a variety of Chalcedony, SiO₂)

Mineraloid (cryptocrystalline quartz)

Sandstone (with potential mineral staining/concretions) (Arenite (SiO2 based)) — sedimentary

Sandstone (with potential mineral staining/concretions)

Arenite (SiO2 based)

Yellow Jasper (Silicon Dioxide (SiO2) with hydrated iron oxide impurities) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2) with hydrated iron oxide impurities

Quartz Geode (likely within Limestone or Dolomite matrix) (Quartz (SiO₂)) — Mineral within a Sedimentary Rock

Quartz Geode (likely within Limestone or Dolomite matrix)

Quartz (SiO₂)

Mineral within a Sedimentary Rock

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Fossilized Wood (with Coal and Limonite) (Petrified Wood (Silicified or Carbonized Flora)) — sedimentary

Fossilized Wood (with Coal and Limonite)

Petrified Wood (Silicified or Carbonized Flora)

Iron Gossan (Limonite/Goethite) (Hydrated Iron Oxides (FeO(OH)·nH2O) from oxidation zones) — sedimentary

Iron Gossan (Limonite/Goethite)

Hydrated Iron Oxides (FeO(OH)·nH2O) from oxidation zones

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

Quartz Crystal (Quartz (SiO₂)) — Mineral

Quartz Crystal

Quartz (SiO₂)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Red Jasper (Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Limonite (Iron Ore) (Hydrated iron(III) oxide-hydroxide (FeO(OH)·nH2O)) — mineral

Limonite (Iron Ore)

Hydrated iron(III) oxide-hydroxide (FeO(OH)·nH2O)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Quartzite (Quartzite (SiO2 silicon dioxide)) — metamorphic

Quartzite

Quartzite (SiO2 silicon dioxide)

Aventurine Quartz (Silicon Dioxide (SiO2) with Fuchsite inclusions) — metamorphic

Aventurine Quartz

Silicon Dioxide (SiO2) with Fuchsite inclusions

Sandstone (River Rock) (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone (River Rock)

Arenite (composed primarily of SiO2)

Quartz (Smoky/Clear variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Smoky/Clear variety)

Silicon Dioxide (SiO2)

Quartz and Mixed Sedimentary Rocks (Silicon Dioxide (SiO2) mixed with various clastic sedimentary lithologies) — sedimentary

Quartz and Mixed Sedimentary Rocks

Silicon Dioxide (SiO2) mixed with various clastic sedimentary lithologies

River Stones (Quartzite and Sandstone) (Quartzite / Sedimentary Rock (SiO2 dominant)) — sedimentary

River Stones (Quartzite and Sandstone)

Quartzite / Sedimentary Rock (SiO2 dominant)

Amygdaloidal Basalt (Amygdaloidal Basalt (Mafic extrusive volcanic rock with secondary mineral infilling)) — igneous

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic extrusive volcanic rock with secondary mineral infilling)

Banded Agate (Onyx type) (Silicon Dioxide (SiO2)) — mineral

Banded Agate (Onyx type)

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal) (Silicon Dioxide (SiO2)) — mineral

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Agate (Silicon Dioxide (SiO2)) — mineral

Agate

Silicon Dioxide (SiO2)

Puddingstone (Gowganda) (Gowganda Formation Conglomerate) — sedimentary

Puddingstone (Gowganda)

Gowganda Formation Conglomerate

Gossan (Iron Hat) (Limonitic Gossan (Fe2O3·nH2O)) — sedimentary

Gossan (Iron Hat)

Limonitic Gossan (Fe2O3·nH2O)