Rock Identifier

Category

Sedimentary (Cryptocrystalline Quartz)

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

Learn about Sedimentary (Cryptocrystalline Quartz) in the encyclopedia

Chalcedony

Black Onyx

Quartzite Sandstone

Quartzite Sandstone

Sandstone

Landscape Agate

Landscape Agate

Tube Agate

Sweetwater Agate

Sweetwater Agate

Frost Agate

Coldwater Agate

Honey Agate

Zebra Agate

Flame Agate

Chalcedony in Matrix (Silicon Dioxide (SiO2)) — mineral

Chalcedony in Matrix

Silicon Dioxide (SiO2)

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

Carnelian

Carnelian (Cryptocrystalline Quartz, SiO2)

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

Carnelian

Carnelian (Cryptocrystalline Quartz, SiO2)

Red Jasper (Silicon Dioxide (SiO2) with Hematite impurities) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with Hematite impurities

Rough Chalcedony / Jasper Nodules (Silicon Dioxide (SiO2)) — mineral

Rough Chalcedony / Jasper Nodules

Silicon Dioxide (SiO2)

Jasper and Chalcedony Pebble (Silicon Dioxide (SiO2)) — sedimentary

Jasper and Chalcedony Pebble

Silicon Dioxide (SiO2)

Chert (Flint/Jasper variety) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Flint/Jasper variety)

Silicon Dioxide (SiO2)

Chalcedony Geode (Botryoidal Agate) (Silicon Dioxide (SiO2)) — mineral

Chalcedony Geode (Botryoidal Agate)

Silicon Dioxide (SiO2)

Tumbled quartz-rich stone, possibly chalcedony or light sandstone (Quartz (SiO₂) if crystalline; possibly microcrystalline quartz (chalcedony) or quartz sandstone) — mineral

Tumbled quartz-rich stone, possibly chalcedony or light sandstone

Quartz (SiO₂) if crystalline; possibly microcrystalline quartz (chalcedony) or quartz sandstone

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

Quartz-veined Sandstone Pebble

Quartzite-veined Arenite

Red Jasper (Silicon Dioxide (SiO₂)) — sedimentary

Red Jasper

Silicon Dioxide (SiO₂)

Banded Agate (Cryptocrystalline Silicon Dioxide (SiO2)) — gemstone

Banded Agate

Cryptocrystalline Silicon Dioxide (SiO2)

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

Carnelian

Carnelian (Cryptocrystalline Quartz, SiO2)

Banded Agate (Yellow/Honey Agate) (Agate (Cryptocrystalline Quartz, SiO2)) — mineral

Banded Agate (Yellow/Honey Agate)

Agate (Cryptocrystalline Quartz, SiO2)

Chert (specifically Flint or Common Opal fragment) (Cryptocrystalline Silica (SiO2)) — sedimentary

Chert (specifically Flint or Common Opal fragment)

Cryptocrystalline Silica (SiO2)

Chert (Flint) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Flint)

Microcrystalline Quartz (SiO2)

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

Chert (or Flint)

SiO2 (Microcrystalline Quartz)

River Pebble (Quartzite / Weathered Sedimentary Rock) — sedimentary

River Pebble

Quartzite / Weathered Sedimentary Rock

Shiva Lingam (Cryptocrystalline Quartz (Jasproid/Chalcedony mix)) — sedimentary

Shiva Lingam

Cryptocrystalline Quartz (Jasproid/Chalcedony mix)

Petrified Wood (Agatized or Silicified Wood (SiO2)) — fossil

Petrified Wood

Agatized or Silicified Wood (SiO2)

Brown chert or jasper pebble (Microcrystalline quartz (SiO₂), likely iron-oxide-bearing chert/jasper) — sedimentary

Brown chert or jasper pebble

Microcrystalline quartz (SiO₂), likely iron-oxide-bearing chert/jasper

Chert / Flint (Artifact) (Microcrystalline quartz (SiO2)) — sedimentary

Chert / Flint (Artifact)

Microcrystalline quartz (SiO2)

Mocha Stone (Dendritic Agate) (Silicon Dioxide (SiO2) with Manganese/Iron inclusions) — sedimentary

Mocha Stone (Dendritic Agate)

Silicon Dioxide (SiO2) with Manganese/Iron inclusions

Common Gravel / Pebble (Lithified rock fragment / Detrital sediment) — sedimentary

Common Gravel / Pebble

Lithified rock fragment / Detrital sediment

Yellow Chalcedony (Agate/Chert) (Silicon Dioxide (SiO2) - Cryptocrystalline Quartz) — sedimentary

Yellow Chalcedony (Agate/Chert)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Iron-stained gray chert (flint) pebble (Microcrystalline quartz (SiO₂), likely chert with iron-oxide staining) — sedimentary

Iron-stained gray chert (flint) pebble

Microcrystalline quartz (SiO₂), likely chert with iron-oxide staining

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

Chert (Chalcedony/Flint)

Silicon Dioxide (SiO2)

Flint / Chert (Hag Stone) (Silicon Dioxide (SiO2)) — sedimentary

Flint / Chert (Hag Stone)

Silicon Dioxide (SiO2)

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

Chert / Jasper

Silicon Dioxide (SiO2)

Banded Chert / Chalcedony (Silicon Dioxide (SiO2)) — sedimentary

Banded Chert / Chalcedony

Silicon Dioxide (SiO2)

Red Jasper (possibly with Quartz or Hematite) (Silicon Dioxide (SiO2) with iron oxide impurities) — sedimentary or metamorphic

Red Jasper (possibly with Quartz or Hematite)

Silicon Dioxide (SiO2) with iron oxide impurities

sedimentary or metamorphic

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

Carnelian

Carnelian (Cryptocrystalline Quartz, SiO2)

Geode (Quartz / Chalcedony nodule) — sedimentary

Geode

Quartz / Chalcedony nodule

Chert (Field Stone) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Field Stone)

Microcrystalline Quartz (SiO2)

Chert / Flint (Microcrystalline Quartz (SiO2)) — sedimentary

Chert / Flint

Microcrystalline Quartz (SiO2)

Chert (Agatized/Chalcedony variety) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Agatized/Chalcedony variety)

Microcrystalline Quartz (SiO2)

Chert / Chalcedony Nodule (Silicon Dioxide (SiO2)) — sedimentary

Chert / Chalcedony Nodule

Silicon Dioxide (SiO2)

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

Agate / Chalcedony Geode

Silicon Dioxide (SiO2)

Chalcedony (River Agate) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (River Agate)

Silicon Dioxide (SiO2)

Geode (Quartz / Chalcedony nodule) — sedimentary

Geode

Quartz / Chalcedony nodule

Chert with Limestone (Microcrystalline Quartz (SiO2) in Calcium Carbonate (CaCO3) matrix) — sedimentary

Chert with Limestone

Microcrystalline Quartz (SiO2) in Calcium Carbonate (CaCO3) matrix

Flint (chert), likely a worked stone flake (Microcrystalline quartz (SiO₂); cryptocrystalline variety of quartz) — sedimentary

Flint (chert), likely a worked stone flake

Microcrystalline quartz (SiO₂); cryptocrystalline variety of quartz