Rock Identifier

Category

Sedimentary Rock (Cryptocrystalline Quartz)

Browse sedimentary rock (cryptocrystalline quartz) specimens identified by the Rock Identifier community.

Learn about Sedimentary Rock (Cryptocrystalline Quartz) in the encyclopedia

Quartz Schist

Clear Quartz

Tourmalinated Quartz

Tourmalinated Quartz

Rutilated Quartz

Rutilated Quartz

Rock Gypsum

Quartz Arenite

Milky Quartz

Smoky Quartz

Scepter Quartz

Spirit Quartz

Lemon Quartz

Tangerine Quartz

Tangerine Quartz

Fancy Jasper (Multicolor Agate/Jasper) (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Fancy Jasper (Multicolor Agate/Jasper)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Tumbled jasper pebble (Jasper, microcrystalline quartz (SiO₂), commonly iron-oxide stained) — mineral

Tumbled jasper pebble

Jasper, microcrystalline quartz (SiO₂), commonly iron-oxide stained

Geode (Unopened) (SiO2 (Silicon Dioxide) - Chalcedony/Quartz Geode) — sedimentary

Geode (Unopened)

SiO2 (Silicon Dioxide) - Chalcedony/Quartz Geode

Jasper (Iron-stained Quartz) (Silicon dioxide (SiO2) with iron oxide inclusions) — sedimentary

Jasper (Iron-stained Quartz)

Silicon dioxide (SiO2) with iron oxide inclusions

Chert (specifically Flint or Jasper variant) (Chert (Siliceous rock composed of microcrystalline Quartz, SiO2)) — sedimentary

Chert (specifically Flint or Jasper variant)

Chert (Siliceous rock composed of microcrystalline Quartz, SiO2)

Carnelian (Silicon dioxide (chalcedony variety), SiO2) — gemstone

Carnelian

Silicon dioxide (chalcedony variety), SiO2

Chert (Iron-stained) (Chert (SiO2)) — sedimentary

Chert (Iron-stained)

Chert (SiO2)

Polished brecciated jasper (likely Apache tear–type iron-rich jasper) (Jasper, microcrystalline quartz (SiO₂), colored by hematite/goethite and other iron oxides) — mineral

Polished brecciated jasper (likely Apache tear–type iron-rich jasper)

Jasper, microcrystalline quartz (SiO₂), colored by hematite/goethite and other iron oxides

Lake Superior Agate (Cryptocrystalline Quartz (SiO2)) — mineral

Lake Superior Agate

Cryptocrystalline Quartz (SiO2)

Chert (Iron-stained) (Chert (SiO2)) — sedimentary

Chert (Iron-stained)

Chert (SiO2)

Gray-green flint/chert fragment (Microcrystalline quartz (SiO₂), likely chert or chalcedony-rich material) — sedimentary

Gray-green flint/chert fragment

Microcrystalline quartz (SiO₂), likely chert or chalcedony-rich material

Tumbled brecciated jasper (Jasper, microcrystalline quartz (SiO₂), commonly with iron oxides and chalcedony) — mineral

Tumbled brecciated jasper

Jasper, microcrystalline quartz (SiO₂), commonly with iron oxides and chalcedony

Polished brecciated jasper (Brecciated jasper, an opaque microcrystalline quartz variety (SiO₂) with iron-oxide and other mineral fragments) — gemstone

Polished brecciated jasper

Brecciated jasper, an opaque microcrystalline quartz variety (SiO₂) with iron-oxide and other mineral fragments

Chert with Calcite Veining (Microcrystalline Quartz (SiO2) with Calcium Carbonate (CaCO3) veins) — sedimentary

Chert with Calcite Veining

Microcrystalline Quartz (SiO2) with Calcium Carbonate (CaCO3) veins

Petrified Wood (Silicified Wood (SiO2)) — sedimentary

Petrified Wood

Silicified Wood (SiO2)

Jasper (Jasper (Silicon Dioxide, SiO2)) — sedimentary

Jasper

Jasper (Silicon Dioxide, SiO2)

Jasper (Silicon dioxide (SiO2)) — sedimentary

Jasper

Silicon dioxide (SiO2)

Chert (Commonly known as Flint/Jasper) (Microcrystalline Quartz (SiO2) with iron oxide inclusions) — sedimentary

Chert (Commonly known as Flint/Jasper)

Microcrystalline Quartz (SiO2) with iron oxide inclusions

Brown Agate (Cryptocrystalline Quartz (SiO2)) — mineral

Brown Agate

Cryptocrystalline Quartz (SiO2)

Polished red jasper beads (Jasper, microcrystalline quartz (SiO₂), colored mainly by iron oxides) — mineral

Polished red jasper beads

Jasper, microcrystalline quartz (SiO₂), colored mainly by iron oxides

Polished brecciated jasper (Microcrystalline quartz (SiO₂), commonly with iron oxides and altered volcanic fragments) — metamorphic

Polished brecciated jasper

Microcrystalline quartz (SiO₂), commonly with iron oxides and altered volcanic fragments

Chert (Flint) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Flint)

Silicon Dioxide (SiO2)

Agate (Cryptocrystalline quartz, Chalcedony (SiO2)) — mineral

Agate

Cryptocrystalline quartz, Chalcedony (SiO2)

Jasper (Imperial Jasper style) (Silicon Dioxide (SiO2) with impurities) — sedimentary

Jasper (Imperial Jasper style)

Silicon Dioxide (SiO2) with impurities

Druzy Quartz on Agate/Chert (Silicon Dioxide (SiO2)) — mineral

Druzy Quartz on Agate/Chert

Silicon Dioxide (SiO2)

Jasper Conglomerate (Puddingstone) (Siliceous Conglomerate (Quartz and Jasper clasts in a fine-grained matrix)) — sedimentary

Jasper Conglomerate (Puddingstone)

Siliceous Conglomerate (Quartz and Jasper clasts in a fine-grained matrix)

Polished red jasper pebble (Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored mainly by iron oxides) — mineral

Polished red jasper pebble

Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored mainly by iron oxides

Polished brown jasper pebble (Jasper, microcrystalline quartz (SiO₂) with iron-oxide impurities) — mineral

Polished brown jasper pebble

Jasper, microcrystalline quartz (SiO₂) with iron-oxide impurities

Banded Chalcedony (Agate) in Basalt Matrix (Cryptocrystalline Quartz (SiO2) in Mafic Igneous Rock) — sedimentary/igneous

Banded Chalcedony (Agate) in Basalt Matrix

Cryptocrystalline Quartz (SiO2) in Mafic Igneous Rock

sedimentary/igneous

Carnelian (a variety of Chalcedony) (Cryptocrystalline Quartz (SiO2) with iron oxide inclusions) — Mineral

Carnelian (a variety of Chalcedony)

Cryptocrystalline Quartz (SiO2) with iron oxide inclusions

Geode (Silicon Dioxide (Quartz/Chalcedony) in carbonate or volcanic host rock) — sedimentary

Geode

Silicon Dioxide (Quartz/Chalcedony) in carbonate or volcanic host rock

Polished striped jasper (Jasper, an opaque microcrystalline variety of quartz (SiO₂), with iron-oxide and clay-mineral inclusions) — gemstone

Polished striped jasper

Jasper, an opaque microcrystalline variety of quartz (SiO₂), with iron-oxide and clay-mineral inclusions

Tumbled brown chert or jasper pebble (Microcrystalline quartz (SiO₂), likely chert/jasper) — sedimentary

Tumbled brown chert or jasper pebble

Microcrystalline quartz (SiO₂), likely chert/jasper

Banded Chert Pebble (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Banded Chert Pebble

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Quartz-veined Granite or Gneiss Pebble (Silicate-rich metamorphic rock fragment) — metamorphic

Quartz-veined Granite or Gneiss Pebble

Silicate-rich metamorphic rock fragment

Polished Ocean Jasper (likely orbicular jasper) (Microcrystalline quartz/chalcedony (SiO₂) with iron oxides and other accessory minerals) — sedimentary

Polished Ocean Jasper (likely orbicular jasper)

Microcrystalline quartz/chalcedony (SiO₂) with iron oxides and other accessory minerals

Quartz Vein in Basalt or Porphyry (Silicate-veined volcanic rock) — igneous

Quartz Vein in Basalt or Porphyry

Silicate-veined volcanic rock

Chert (and Agate/Quartz in Geode-like Nodule) (Silicon Dioxide (SiO2)) — sedimentary

Chert (and Agate/Quartz in Geode-like Nodule)

Silicon Dioxide (SiO2)

Brown Chalcedony (Silicon Dioxide (SiO2)) — mineral

Brown Chalcedony

Silicon Dioxide (SiO2)

Red jasper pebble (Jasper, microcrystalline quartz (SiO₂), colored mainly by iron oxides) — mineral

Red jasper pebble

Jasper, microcrystalline quartz (SiO₂), colored mainly by iron oxides

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

Yellow Jasper

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Chert (Chert (microcrystalline quartz, SiO2)) — sedimentary

Chert

Chert (microcrystalline quartz, SiO2)