Rock Identifier

Category

Microcrystalline Quartz

Browse microcrystalline quartz specimens identified by the Rock Identifier community.

Learn about Microcrystalline Quartz in the encyclopedia

Chalcedony

Chert

Brown Jasper

Flower Jasper

Red Jasper

Feather Jasper

Royal Imperial Jasper

Scenic Jasper

Carrasite Jasper

Map Jasper

Dendritic Jasper

Sonoran Sunset Jasper

Polished red jasper (Jasper, microcrystalline quartz (SiO₂), colored chiefly by iron oxides) — metamorphic

Polished red jasper

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

Tumbled chert or jasper pebble (Microcrystalline quartz (SiO₂), likely iron-stained chert/jasper) — sedimentary

Tumbled chert or jasper pebble

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

Likely tumbled jasper or iron-rich chert (Microcrystalline quartz (SiO₂), variably colored by iron oxides) — mineral

Likely tumbled jasper or iron-rich chert

Microcrystalline quartz (SiO₂), variably colored by iron oxides

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

Red jasper

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

Tumbled brown jasper (probable) (Microcrystalline quartz/chalcedony, SiO₂, with iron-oxide impurities) — mineral

Tumbled brown jasper (probable)

Microcrystalline quartz/chalcedony, SiO₂, with iron-oxide impurities

Polished brecciated jasper (Silica-rich microcrystalline quartz/chalcedony (SiO₂), with iron-oxide staining and angular mineral fragments) — metamorphic

Polished brecciated jasper

Silica-rich microcrystalline quartz/chalcedony (SiO₂), with iron-oxide staining and angular mineral fragments

Tumbled brown jasper (Microcrystalline quartz (SiO₂), commonly with iron-oxide impurities) — mineral

Tumbled brown jasper

Microcrystalline quartz (SiO₂), commonly with iron-oxide impurities

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

Red jasper pebble

Jasper, microcrystalline quartz (SiO₂) colored by iron oxides

Tumbled yellow jasper (Microcrystalline quartz (chalcedony), SiO₂, colored by iron oxides) — metamorphic

Tumbled yellow jasper

Microcrystalline quartz (chalcedony), SiO₂, colored by iron oxides

Orange chalcedony or jasper fragment (Microcrystalline quartz (SiO₂), likely chalcedony/jasper) — mineral

Orange chalcedony or jasper fragment

Microcrystalline quartz (SiO₂), likely chalcedony/jasper

Augite Shell / Turret Snail Fossil (or Recent Seashell) (Gastropoda (Class) / Turritellidae (Family)) — fossil

Augite Shell / Turret Snail Fossil (or Recent Seashell)

Gastropoda (Class) / Turritellidae (Family)

Orange Carnelian / Chalcedony Pebble (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Orange Carnelian / Chalcedony Pebble

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Agate (Beach Pebble) (Silicon Dioxide (SiO2) - Banded Chalcedony) — sedimentary

Agate (Beach Pebble)

Silicon Dioxide (SiO2) - Banded Chalcedony

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

Chert / Flint

Silicon Dioxide (SiO2)

Red Jasper (Silicon Dioxide (SiO2) with iron inclusions) — mineral

Red Jasper

Silicon Dioxide (SiO2) with iron inclusions

Banded Agate (Chalcedony (SiO2)) — mineral

Banded Agate

Chalcedony (SiO2)

Green Aventurine (Quartz variety with fuchsite inclusions (SiO2)) — mineral

Green Aventurine

Quartz variety with fuchsite inclusions (SiO2)

Tumbled Agate and Chalcedony (Cryptocrystalline Quartz (SiO2)) — mineral

Tumbled Agate and Chalcedony

Cryptocrystalline Quartz (SiO2)

Dalmatian Jasper (Microcrystalline Quartz with Tourmaline) — igneous

Dalmatian Jasper

Microcrystalline Quartz with Tourmaline

Banded Jasper / Chert Beach Pebble (Microcrystalline Quartz (SiO2)) — sedimentary

Banded Jasper / Chert Beach Pebble

Microcrystalline Quartz (SiO2)

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

Chert / Flint

Microcrystalline quartz (SiO2)

Zebra Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Zebra Jasper

Microcrystalline Quartz (SiO2)

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

Chert / Flint

Microcrystalline Quartz (SiO2)

Agate (SiO2 (Silicon Dioxide)) — Mineral

Agate

SiO2 (Silicon Dioxide)

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

Agate / Banded Chalcedony

Agate (Silicon Dioxide / SiO2)

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

Red Jasper

SiO2 (Silicon Dioxide with Iron Oxide inclusions)

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

Red Jasper

Silicon Dioxide (SiO2 with Fe2O3 inclusions)

Carnelian Agate (Silicon Dioxide (SiO2)) — mineral

Carnelian Agate

Silicon Dioxide (SiO2)

Banded Agate (White Agate) (Chalcedony (Silicon Dioxide, SiO2)) — mineral

Banded Agate (White Agate)

Chalcedony (Silicon Dioxide, SiO2)

Agate (Silicon Dioxide (SiO2) - Banded Chalcedony) — mineral

Agate

Silicon Dioxide (SiO2) - Banded Chalcedony

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

Agate (Chalcedony)

Silicon Dioxide (SiO2)

Dalmatian Jasper (Feldspar-Quartz Microgranite) — igneous

Dalmatian Jasper

Feldspar-Quartz Microgranite

Red jasper (tumbled) (Microcrystalline quartz/chalcedony, SiO₂, colored chiefly by iron oxides) — mineral

Red jasper (tumbled)

Microcrystalline quartz/chalcedony, SiO₂, colored chiefly by iron oxides

Jasper (Microcrystalline Quartz (SiO2) with impurities) — sedimentary

Jasper

Microcrystalline Quartz (SiO2) with impurities

Quartz (Agate or Chert pebble) (Silicon Dioxide (SiO2)) — sedimentary

Quartz (Agate or Chert pebble)

Silicon Dioxide (SiO2)

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Tumbled yellow chert or jasper pebble (Microcrystalline quartz (SiO₂), likely iron-stained chert/jasper) — sedimentary

Tumbled yellow chert or jasper pebble

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

Carnelian (Tumbled Pebble) (Quartz (Variety: Carnelian, SiO2)) — gemstone

Carnelian (Tumbled Pebble)

Quartz (Variety: Carnelian, SiO2)

Banded Chert (Sedimentary Cryptocrystalline Quartz (SiO2)) — sedimentary

Banded Chert

Sedimentary Cryptocrystalline Quartz (SiO2)

Tumbled brown mineral/rock specimen (Indeterminate from image; likely brown jasper, chert, or iron-stained quartzite) — mineral

Tumbled brown mineral/rock specimen

Indeterminate from image; likely brown jasper, chert, or iron-stained quartzite

Chalcedony (Tumbled) (Cryptocrystalline Quartz (SiO2)) — mineral

Chalcedony (Tumbled)

Cryptocrystalline Quartz (SiO2)

Two small opaque mineral fragments, likely red jasper and blue-gray sodalite (Red jasper: microcrystalline quartz (SiO₂); possible sodalite: Na₈(Al₆Si₆O₂₄)Cl₂) — mineral

Two small opaque mineral fragments, likely red jasper and blue-gray sodalite

Red jasper: microcrystalline quartz (SiO₂); possible sodalite: Na₈(Al₆Si₆O₂₄)Cl₂