Rock Identifier

Category

Mineral (Cryptocrystalline Quartz)

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

Learn about Mineral (Cryptocrystalline Quartz) in the encyclopedia

Lithium Quartz

Dumortierite Quartz

Dumortierite Quartz

Garden Quartz

Blue Quartz

Phantom Quartz

Chalcedony

Black Onyx

Super Seven

Aventurine

Landscape Agate

Landscape Agate

Tube Agate

Prase

Chert (often called Flint or Jasper) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (often called Flint or Jasper)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

River Pebble (Quartzite / Weathered Sedimentary Rock) — sedimentary

River Pebble

Quartzite / Weathered Sedimentary Rock

Quartz-veined Jasper (Microcrystalline quartz (SiO2) with quartz veins) — sedimentary

Quartz-veined Jasper

Microcrystalline quartz (SiO2) with quartz veins

Quartz pebble (Silicon dioxide (SiO2)) — mineral

Quartz pebble

Silicon dioxide (SiO2)

Petrified Wood (Silicified Wood (SiO2)) — fossil

Petrified Wood

Silicified Wood (SiO2)

Quartz (Jasper / Chert) (Silicon Dioxide (SiO2)) — sedimentary

Quartz (Jasper / Chert)

Silicon Dioxide (SiO2)

Botryoidal chalcedony (agate/geode fragment) (Chalcedony, microcrystalline SiO₂; likely quartz with minor iron-oxide and carbonate inclusions) — mineral

Botryoidal chalcedony (agate/geode fragment)

Chalcedony, microcrystalline SiO₂; likely quartz with minor iron-oxide and carbonate inclusions

Carnelian (Carnelian (Microcrystalline Quartz, SiO2)) — mineral

Carnelian

Carnelian (Microcrystalline Quartz, SiO2)

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 dendritic agate pendant (Microcrystalline quartz (SiO₂), with dark manganese- or iron-oxide dendrites) — mineral

Polished dendritic agate pendant

Microcrystalline quartz (SiO₂), with dark manganese- or iron-oxide dendrites

Banded Jasper (Silicate Mineral (Microcrystalline Quartz / SiO2)) — sedimentary

Banded Jasper

Silicate Mineral (Microcrystalline Quartz / SiO2)

Milky quartz pebble (Quartz (SiO₂), cryptocrystalline to coarse microcrystalline variety) — mineral

Milky quartz pebble

Quartz (SiO₂), cryptocrystalline to coarse microcrystalline variety

Banded Sedimentary Rock (Sedimentary rock with mineral veins/banding) — sedimentary

Banded Sedimentary Rock

Sedimentary rock with mineral veins/banding

Agate (Silicon dioxide (SiO2) - variety Chalcedony) — mineral

Agate

Silicon dioxide (SiO2) - variety Chalcedony

Milky quartz pebble (Quartz, silicon dioxide (SiO₂), cryptocrystalline to microcrystalline variety) — mineral

Milky quartz pebble

Quartz, silicon dioxide (SiO₂), cryptocrystalline to microcrystalline variety

Chert (Flint Nodules) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Flint Nodules)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Quartz-veined Sandstone Pebble (Quartzite-veined Arenite) — sedimentary

Quartz-veined Sandstone Pebble

Quartzite-veined Arenite

Chert (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Quartz (Agate/Chalcedony variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Agate/Chalcedony variety)

Silicon Dioxide (SiO2)

Blue Chalcedony (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — mineral

Blue Chalcedony

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Orbicular jasper / brecciated jasper (Silica-rich microcrystalline quartz (chalcedony), commonly with iron oxides and altered volcanic fragments) — metamorphic

Orbicular jasper / brecciated jasper

Silica-rich microcrystalline quartz (chalcedony), commonly with iron oxides and altered volcanic fragments

Chert (often called Flint) (Microcrystalline or cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (often called Flint)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Chert (variations include Flint or Jasper) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (variations include Flint or Jasper)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Tumbled green aventurine (Quartz (SiO₂) with fuchsite mica inclusions) — mineral

Tumbled green aventurine

Quartz (SiO₂) with fuchsite mica inclusions

Polished brown jasper (Jasper, microcrystalline quartz (SiO₂), commonly containing iron-oxide and clay inclusions) — mineral

Polished brown jasper

Jasper, microcrystalline quartz (SiO₂), commonly containing iron-oxide and clay inclusions

Lake Superior Agate (Silicon Dioxide (Cryptocrystalline Quartz), SiO2) — mineral

Lake Superior Agate

Silicon Dioxide (Cryptocrystalline Quartz), SiO2

Agate / Chalcedony Geode (Silicon Dioxide (SiO2)) — sedimentary

Agate / Chalcedony Geode

Silicon Dioxide (SiO2)

Tumbled chalcedony/agate (likely botryoidal variety) (Microcrystalline quartz, SiO₂; possibly druzy chalcedony or common agate) — mineral

Tumbled chalcedony/agate (likely botryoidal variety)

Microcrystalline quartz, SiO₂; possibly druzy chalcedony or common agate

Chalcedony Bangle (SiO2) — gemstone

Chalcedony Bangle

SiO2

Polished dendritic agate or jasper pebble (Microcrystalline quartz (SiO₂), likely chalcedony with iron-oxide inclusions) — mineral

Polished dendritic agate or jasper pebble

Microcrystalline quartz (SiO₂), likely chalcedony with iron-oxide inclusions

Tumbled amber-colored agate or chalcedony (Microcrystalline quartz (SiO₂), likely iron-stained chalcedony/agate) — mineral

Tumbled amber-colored agate or chalcedony

Microcrystalline quartz (SiO₂), likely iron-stained chalcedony/agate

Chert (White Chert / Flint) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (White Chert / Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (often called Flint) (Microcrystalline to cryptocrystalline quartz (SiO2)) — sedimentary

Chert (often called Flint)

Microcrystalline to cryptocrystalline quartz (SiO2)

Quartz Pebble (Chert/Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble (Chert/Chalcedony)

Silicon Dioxide (SiO2)

Common Pebble / Sedimentary Rock Fragment (Lithified clastic sediment) — sedimentary

Common Pebble / Sedimentary Rock Fragment

Lithified clastic sediment

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Polished banded agate (Microcrystalline quartz (SiO₂), variety agate) — mineral

Polished banded agate

Microcrystalline quartz (SiO₂), variety agate

Polished orange chalcedony pendant (Chalcedony, microcrystalline quartz (SiO₂), likely orange carnelian or orange agate) — mineral

Polished orange chalcedony pendant

Chalcedony, microcrystalline quartz (SiO₂), likely orange carnelian or orange agate

Chalcedony (Agate / Quartz Nodule) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Agate / Quartz Nodule)

Silicon Dioxide (SiO2)

Carnelian (Yellow-Orange Chalcedony) (Silicon Dioxide (SiO2) with iron oxide inclusions) — mineral

Carnelian (Yellow-Orange Chalcedony)

Silicon Dioxide (SiO2) with iron oxide inclusions

Chert Pebble (Jasper/Quartz variety) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert Pebble (Jasper/Quartz variety)

Microcrystalline Quartz (SiO2)

Polished ocean jasper (orbicular jasper) (Orbicular jasper; chiefly microcrystalline quartz (SiO₂) with chalcedony, iron oxides, and accessory minerals) — sedimentary

Polished ocean jasper (orbicular jasper)

Orbicular jasper; chiefly microcrystalline quartz (SiO₂) with chalcedony, iron oxides, and accessory minerals