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

Quartz Geode (partially filled/solid) (Silicon Dioxide (SiO2)) — sedimentary

Quartz Geode (partially filled/solid)

Silicon Dioxide (SiO2)

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

Chalcedony (Agate/Carnelian type)

Silicon Dioxide (SiO2)

Brown chalcedony (likely carnelian) (Chalcedony, microcrystalline quartz (SiO₂); iron-stained brown variety) — mineral

Brown chalcedony (likely carnelian)

Chalcedony, microcrystalline quartz (SiO₂); iron-stained brown variety

Red Jasper with Chalcedony Banding (Microcrystalline Quartz (SiO2) with Hematite inclusions) — sedimentary

Red Jasper with Chalcedony Banding

Microcrystalline Quartz (SiO2) with Hematite inclusions

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

Red Jasper Pebble

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Polished brown chalcedony (likely carnelian or sard) (Chalcedony, microcrystalline quartz (SiO₂); brown varieties are commonly termed sard, while reddish-orange material is carnelian) — mineral

Polished brown chalcedony (likely carnelian or sard)

Chalcedony, microcrystalline quartz (SiO₂); brown varieties are commonly termed sard, while reddish-orange material is carnelian

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

Chert / Jasper

Silicon Dioxide (SiO2)

Yellow jasper (likely iron-stained chalcedony) (Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored by iron oxides) — mineral

Yellow jasper (likely iron-stained chalcedony)

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

Dyed Blue Agate Slice (Silicon Dioxide (SiO2) - Variety Agate) — mineral

Dyed Blue Agate Slice

Silicon Dioxide (SiO2) - Variety Agate

Amber (or polished Chalcedony bead) (Fossilized Tree Resin / SiO2 (Silicon Dioxide if Chalcedony)) — gemstone

Amber (or polished Chalcedony bead)

Fossilized Tree Resin / SiO2 (Silicon Dioxide if Chalcedony)

Chalcedony (Silicon Dioxide (SiO2)) — mineral

Chalcedony

Silicon Dioxide (SiO2)

Carnelian (Silicon Dioxide, variety of chalcedony (SiO2)) — gemstone

Carnelian

Silicon Dioxide, variety of chalcedony (SiO2)

River Jasper (Chert/Chalcedony) (Silicon Dioxide (SiO2) with iron oxide impurities) — sedimentary

River Jasper (Chert/Chalcedony)

Silicon Dioxide (SiO2) with iron oxide impurities

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

Yellow Jasper

Silicon Dioxide (SiO2) with iron inclusions

Brecciated jasper with quartz vein (Jasper (microcrystalline quartz, SiO₂) with quartz/chalcedony cement; brecciated silica-rich rock) — metamorphic

Brecciated jasper with quartz vein

Jasper (microcrystalline quartz, SiO₂) with quartz/chalcedony cement; brecciated silica-rich rock

Possible tumbled jasper or iron-rich chert (Microcrystalline quartz (SiO₂), variably mixed with iron oxides) — mineral

Possible tumbled jasper or iron-rich chert

Microcrystalline quartz (SiO₂), variably mixed with iron oxides

Yellow Chalcedony (or Yellow Jasper / Agate) (Silicon Dioxide (SiO2)) — mineral

Yellow Chalcedony (or Yellow Jasper / Agate)

Silicon Dioxide (SiO2)

Polished carnelian/chalcedony (Carnelian, a red-orange variety of cryptocrystalline quartz (SiO₂)) — gemstone

Polished carnelian/chalcedony

Carnelian, a red-orange variety of cryptocrystalline quartz (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 (Microcrystalline Quartz (SiO2)) — sedimentary

Chert

Microcrystalline Quartz (SiO2)

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Quartz Geode / Druzy Quartz Node (Silicon Dioxide (SiO2)) — sedimentary

Quartz Geode / Druzy Quartz Node

Silicon Dioxide (SiO2)

Tumbled honey-brown chalcedony or agate (Microcrystalline quartz (SiO₂), likely chalcedony; exact identification requires testing) — mineral

Tumbled honey-brown chalcedony or agate

Microcrystalline quartz (SiO₂), likely chalcedony; exact identification requires testing

Fossil Coral and Quartz Pebble (Fossilized Anthozoa / Silicon Dioxide (Quartz)) — sedimentary

Fossil Coral and Quartz Pebble

Fossilized Anthozoa / Silicon Dioxide (Quartz)

Jasper (Red/Brown) (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Jasper (Red/Brown)

Silicon Dioxide (SiO2) with iron oxide inclusions

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

Banded Agate

Chalcedony / Silicon Dioxide (SiO2)

Chert Arrowhead and Quartz Specimen (Silicon Dioxide (SiO2)) — mineral

Chert Arrowhead and Quartz Specimen

Silicon Dioxide (SiO2)

Red Jasper (Silicon Dioxide (SiO2) - variety Jasper) — mineral

Red Jasper

Silicon Dioxide (SiO2) - variety Jasper

Dalmation Stone (Peralkaline rhyolite (SiO2 with Arfvedsonite/Riebeckite)) — igneous

Dalmation Stone

Peralkaline rhyolite (SiO2 with Arfvedsonite/Riebeckite)

Polished quartz geode slice (Quartz (SiO₂), likely chalcedony-lined geode with drusy quartz crystals) — mineral

Polished quartz geode slice

Quartz (SiO₂), likely chalcedony-lined geode with drusy quartz crystals

Iron-rich jasper (likely rough jasper/chert) (Microcrystalline quartz (SiO₂), colored by iron oxides) — mineral

Iron-rich jasper (likely rough jasper/chert)

Microcrystalline quartz (SiO₂), colored by iron oxides

Black Pebble (Basalt / Chert) (SiO2 (if Chert) or Mafic Igneous Rock (if Basalt)) — igneous

Black Pebble (Basalt / Chert)

SiO2 (if Chert) or Mafic Igneous Rock (if Basalt)

Jasper (Silicon Dioxide (Quartz variety, SiO2)) — mineral

Jasper

Silicon Dioxide (Quartz variety, SiO2)

Banded Agate (Tumbled) (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — mineral

Banded Agate (Tumbled)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Agate (Polished Slice) (Silicon Dioxide (SiO2)) — mineral

Agate (Polished Slice)

Silicon Dioxide (SiO2)

Carnelian (Polished Agate/Jasper) (SiO2 (Silicon Dioxide - Microcrystalline Quartz)) — mineral

Carnelian (Polished Agate/Jasper)

SiO2 (Silicon Dioxide - Microcrystalline Quartz)

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

Carnelian

Silicon dioxide (chalcedony variety), SiO2

Carnelian (Silicon dioxide (SiO2) - variety of Chalcedony) — mineral

Carnelian

Silicon dioxide (SiO2) - variety of Chalcedony

Red Jasper (Silicon dioxide (SiO2) with iron inclusions) — sedimentary

Red Jasper

Silicon dioxide (SiO2) with iron inclusions

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

Banded Agate (Chalcedony)

Silicon Dioxide (SiO2)

Yellow Jasper (Silicon Dioxide (SiO2) with goethite or limonite inclusions) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2) with goethite or limonite inclusions

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

Banded Agate

Silicon Dioxide (SiO2) - variety Chalcedony