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

Banded Agate (Geode Fragment) (Silicon Dioxide (SiO2) - Variety Agate) — mineral

Banded Agate (Geode Fragment)

Silicon Dioxide (SiO2) - Variety Agate

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

Agate (Carnelian/Chalcedony)

Silicon Dioxide (SiO2)

Ferruginous Quartz (Carnelian/Sardine Jasper) (Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) impurities) — sedimentary/mineral

Ferruginous Quartz (Carnelian/Sardine Jasper)

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

sedimentary/mineral

River Jasper (Chert/Chalcedony mix) (Silicon Dioxide (SiO2) with iron oxide and chlorite inclusions) — sedimentary

River Jasper (Chert/Chalcedony mix)

Silicon Dioxide (SiO2) with iron oxide and chlorite inclusions

Jasper with Hematite (Red Jasper) (Silicon Dioxide with Iron Oxide (SiO2 and Fe2O3)) — sedimentary (physico-chemical precipitate)

Jasper with Hematite (Red Jasper)

Silicon Dioxide with Iron Oxide (SiO2 and Fe2O3)

sedimentary (physico-chemical precipitate)

Agate (Crazy Lace or Eye Agate) (Silicon Dioxide (SiO2)) — mineral

Agate (Crazy Lace or Eye Agate)

Silicon Dioxide (SiO2)

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

Banded Agate (Yellow Agate)

Silicon Dioxide (SiO2)

Red jasper (likely polished/tumbled) (Jasper, microcrystalline quartz/chalcedony (SiO₂) colored by iron oxides) — mineral

Red jasper (likely polished/tumbled)

Jasper, microcrystalline quartz/chalcedony (SiO₂) colored by iron oxides

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

Red Jasper (beads)

SiO₂ (Silicon Dioxide)

Mineral, variety of chalcedony (microcrystalline quartz)

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

Chert

Chert (Microcrystalline Quartz, SiO2)

Banded Agate (Cryptocrystalline Quartz (SiO2)) — sedimentary

Banded Agate

Cryptocrystalline Quartz (SiO2)

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

Chert (Jasper/Carnelian variety)

Microcrystalline Quartz (SiO2)

Banded agate (likely chalcedony) (Agate, microcrystalline quartz (SiO₂), commonly with chalcedony and quartz layers) — mineral

Banded agate (likely chalcedony)

Agate, microcrystalline quartz (SiO₂), commonly with chalcedony and quartz layers

Snakeskin Jasper (Microcrystalline Quartz (SiO2) with iron inclusions) — sedimentary

Snakeskin Jasper

Microcrystalline Quartz (SiO2) with iron inclusions

Chert (varietal: Flint Pitted Pebble) (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (varietal: Flint Pitted Pebble)

Cryptocrystalline Quartz (SiO2)

Weathered quartz-rich pebble (Microcrystalline quartz (SiO₂), possibly chert or chalcedony) — mineral

Weathered quartz-rich pebble

Microcrystalline quartz (SiO₂), possibly chert or chalcedony

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

Banded Agate

Chalcedony (Silicon Dioxide, SiO2)

Jasper (likely Brecciated or Multi-colored) (Jasper (SiO2)) — sedimentary

Jasper (likely Brecciated or Multi-colored)

Jasper (SiO2)

$Chalcedony (likely flint/chert), possibly an impact-fractured pebble (Microcrystalline quartz, SiO₂; chalcedony/chert) — sedimentary$

Chalcedony (likely flint/chert), possibly an impact-fractured pebble

Microcrystalline quartz, SiO₂; chalcedony/chert

Tumbled brown jasper (likely orbicular or brecciated jasper) (Jasper, microcrystalline quartz/chalcedony; SiO₂) — mineral

Tumbled brown jasper (likely orbicular or brecciated jasper)

Jasper, microcrystalline quartz/chalcedony; SiO₂

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

Red Jasper

Jasper (Silicon Dioxide with Iron Oxide inclusions, SiO2)

African Turquoise (Jasper) (Impure variety of silica, primarily Quartz (SiO2) with various inclusions) — sedimentary

African Turquoise (Jasper)

Impure variety of silica, primarily Quartz (SiO2) with various inclusions

Red Jasper (Silicate (SiO2 with Hematite impurities)) — sedimentary

Red Jasper

Silicate (SiO2 with Hematite impurities)

Red Agate (Carnelian) (Chalcedony (SiO2) with iron oxide inclusions) — mineral

Red Agate (Carnelian)

Chalcedony (SiO2) with iron oxide inclusions

Bloodstone (Chalcedony (Variety Heliotrope), SiO2) — mineral

Bloodstone

Chalcedony (Variety Heliotrope), SiO2

Blue Lace Agate (Silicon Dioxide (SiO2)) — mineral

Blue Lace Agate

Silicon Dioxide (SiO2)

Crazy Lace Agate (Silicon Dioxide (SiO2) with iron and aluminum inclusions) — sedimentary

Crazy Lace Agate

Silicon Dioxide (SiO2) with iron and aluminum inclusions

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

Chert/Jasper

Microcrystalline Quartz (SiO2)

Chalcedony (Botryoidal/Drusy Quartz) (Silicon Dioxide (SiO₂)) — Mineral

Chalcedony (Botryoidal/Drusy Quartz)

Silicon Dioxide (SiO₂)

Tumbled chalcedony or agate (Microcrystalline quartz (SiO₂), likely chalcedony with iron-oxide staining) — mineral

Tumbled chalcedony or agate

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

Green Spot Jasper (Kiwi Jasper / Sesame Jasper) (Partially altered granitic rock rich in quartz, microcline feldspar, and tourmaline or amphibole inclusions) — metamorphic

Green Spot Jasper (Kiwi Jasper / Sesame Jasper)

Partially altered granitic rock rich in quartz, microcline feldspar, and tourmaline or amphibole inclusions

Tumbled orange-brown chalcedony (likely carnelian) (Microcrystalline quartz, SiO₂; carnelian is iron-colored chalcedony) — mineral

Tumbled orange-brown chalcedony (likely carnelian)

Microcrystalline quartz, SiO₂; carnelian is iron-colored chalcedony

Red jasper (likely iron-rich chert) (Microcrystalline quartz, SiO₂, colored mainly by hematite/goethite) — sedimentary

Red jasper (likely iron-rich chert)

Microcrystalline quartz, SiO₂, colored mainly by hematite/goethite

Dark tumbled stone, likely basalt or black chert (Probable basalt (fine-grained plagioclase–pyroxene rock); chert is an alternative) — igneous

Dark tumbled stone, likely basalt or black chert

Probable basalt (fine-grained plagioclase–pyroxene rock); chert is an alternative

Banded Agate (Cryptocrystalline Silica (SiO2)) — mineral

Banded Agate

Cryptocrystalline Silica (SiO2)

Jasper (Silicon dioxide (SiO2)) — sedimentary

Jasper

Silicon dioxide (SiO2)

Chert (Chert (SiO2)) — sedimentary

Chert

Chert (SiO2)

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

Red Jasper

Jasper (Silicon Dioxide, SiO2 with Iron Oxide impurities)

Dalmatian Jasper (Dalmatian Stone) (Dalmatian Stone (primarily Feldspar, Quartz, and Arfvedsonite/Tourmaline)) — igneous

Dalmatian Jasper (Dalmatian Stone)

Dalmatian Stone (primarily Feldspar, Quartz, and Arfvedsonite/Tourmaline)

Yellow Jasper with Red Inclusion (Silicon Dioxide (SiO2) with Iron Oxides) — sedimentary

Yellow Jasper with Red Inclusion

Silicon Dioxide (SiO2) with Iron Oxides

Jasper with Agate and Quartz Inclusions (Silicon Dioxide (SiO2) - Chalcedony / Quartz aggregate) — sedimentary

Jasper with Agate and Quartz Inclusions

Silicon Dioxide (SiO2) - Chalcedony / Quartz aggregate

Jasper (Red and Tan Jasper) (Microcrystalline Quartz (SiO2) with iron oxide inclusions) — sedimentary

Jasper (Red and Tan Jasper)

Microcrystalline Quartz (SiO2) with iron oxide inclusions