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

Banded Agate (Tumbled Chalcedony)

Silicon Dioxide (SiO2)

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

Chert / Flint

Silicon Dioxide (SiO2)

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

Agate (Polished Cabochon Slice)

Silicon Dioxide (SiO2)

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

Banded Agate (Tumbled)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

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

Red Jasper

Silicon Dioxide with Iron Oxide (SiO2)

Carnelian (Silicon Dioxide (Chalcedony variety), SiO2) — mineral

Carnelian

Silicon Dioxide (Chalcedony variety), SiO2

Polished red jasper (Jasper, microcrystalline quartz (SiO₂)) — mineral

Polished red jasper

Jasper, microcrystalline quartz (SiO₂)

Chert (variously known as Flint or Microcrystalline Quartz) (Silicon dioxide (SiO2)) — sedimentary

Chert (variously known as Flint or Microcrystalline Quartz)

Silicon dioxide (SiO2)

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

Chert (Jasper variation)

Microcrystalline Quartz (SiO2)

Polished brown jasper or chert pebble (Microcrystalline quartz (SiO₂), likely iron-stained chalcedony/jasper) — mineral

Polished brown jasper or chert pebble

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

Polished tiger-eye jasper / iron-rich jasper (Quartz-rich jasper (microcrystalline SiO₂) with iron oxides, likely hematite/goethite and magnetite) — metamorphic

Polished tiger-eye jasper / iron-rich jasper

Quartz-rich jasper (microcrystalline SiO₂) with iron oxides, likely hematite/goethite and magnetite

Likely weathered jasper or iron-rich chert (Microcrystalline quartz (SiO₂), with iron-oxide staining) — sedimentary

Likely weathered jasper or iron-rich chert

Microcrystalline quartz (SiO₂), with iron-oxide staining

Tumbled jasper (Jasper, an opaque microcrystalline variety of quartz (SiO₂), commonly chalcedony with iron-oxide impurities) — mineral

Tumbled jasper

Jasper, an opaque microcrystalline variety of quartz (SiO₂), commonly chalcedony with iron-oxide impurities

Tumbled jasper or chert (Microcrystalline quartz (SiO₂), likely iron-stained jasper) — mineral

Tumbled jasper or chert

Microcrystalline quartz (SiO₂), likely iron-stained jasper

Tumbled yellow jasper or chert (Microcrystalline quartz (SiO₂), likely iron-oxide-stained chalcedony/chert) — mineral

Tumbled yellow jasper or chert

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

Tumbled jasper pebble (Jasper, an opaque microcrystalline variety of quartz (SiO₂), commonly colored by iron oxides and hydroxides) — mineral

Tumbled jasper pebble

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

Tumbled yellow jasper or iron-stained quartzite (Microcrystalline quartz (SiO₂), likely jasper/quartzite with iron-oxide staining) — metamorphic

Tumbled yellow jasper or iron-stained quartzite

Microcrystalline quartz (SiO₂), likely jasper/quartzite with iron-oxide staining

Dalmatian jasper (often sold as Dalmatian stone) (Porphyritic quartz monzonite or alkali granite, composed mainly of feldspar and quartz with black aegirine/arfvedsonite amphibole-group minerals) — igneous

Dalmatian jasper (often sold as Dalmatian stone)

Porphyritic quartz monzonite or alkali granite, composed mainly of feldspar and quartz with black aegirine/arfvedsonite amphibole-group minerals

Polished brecciated jasper pebble (Microcrystalline quartz (SiO₂), with iron-oxide inclusions) — mineral

Polished brecciated jasper pebble

Microcrystalline quartz (SiO₂), with iron-oxide inclusions

Chert / Flint (Silicon Dioxide (Microcrystalline Quartz, $SiO_2$)) — sedimentary

Chert / Flint

Silicon Dioxide (Microcrystalline Quartz, $SiO_2$)

Chalcedony (Silicon Dioxide (SiO2)) — mineral

Chalcedony

Silicon Dioxide (SiO2)

Quartz Pebble (Yellow/Iron-Stained Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble (Yellow/Iron-Stained Quartz)

Silicon Dioxide (SiO2)

Red jasper bead bracelet (Jasper, an opaque, microcrystalline variety of quartz (SiO₂), colored red by iron oxides) — gemstone

Red jasper bead bracelet

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

Likely green-brown jasper or iron-stained chert (Microcrystalline quartz (SiO₂), possibly iron-oxide-stained chert/jasper) — sedimentary

Likely green-brown jasper or iron-stained chert

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

Likely river-worn brown jasper or chert pebble (Microcrystalline quartz (SiO₂); exact variety cannot be confirmed from the image) — sedimentary

Likely river-worn brown jasper or chert pebble

Microcrystalline quartz (SiO₂); exact variety cannot be confirmed from the image

Reddish-brown jasper/chert with iron staining (Microcrystalline quartz (SiO₂), likely ferruginous jasper or chert) — sedimentary

Reddish-brown jasper/chert with iron staining

Microcrystalline quartz (SiO₂), likely ferruginous jasper or chert

Tumbled jasper or chert pebble (Microcrystalline quartz, mainly SiO₂, likely jasper/chert) — mineral

Tumbled jasper or chert pebble

Microcrystalline quartz, mainly SiO₂, likely jasper/chert

Banded chert or jasper (Microcrystalline quartz (SiO₂), likely chalcedony with iron-oxide impurities) — sedimentary

Banded chert or jasper

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

Iron-stained chalcedony or jasper (Microcrystalline quartz (SiO₂), likely ferruginous jasper/chalcedony) — mineral

Iron-stained chalcedony or jasper

Microcrystalline quartz (SiO₂), likely ferruginous jasper/chalcedony

Tumbled dark agate or jasper (Microcrystalline quartz (SiO₂), likely chalcedony/jasper) — mineral

Tumbled dark agate or jasper

Microcrystalline quartz (SiO₂), likely chalcedony/jasper

Polished brown jasper pebble (Microcrystalline quartz (SiO₂), commonly iron-oxide-rich jasper) — mineral

Polished brown jasper pebble

Microcrystalline quartz (SiO₂), commonly iron-oxide-rich jasper

Chert or flint fragment (Microcrystalline quartz (SiO₂), likely chert) — sedimentary

Chert or flint fragment

Microcrystalline quartz (SiO₂), likely chert

Tumbled jasper or chert (Microcrystalline quartz (SiO₂), likely opaque chalcedony/jasper) — mineral

Tumbled jasper or chert

Microcrystalline quartz (SiO₂), likely opaque chalcedony/jasper

Tumbled jasper (Microcrystalline quartz (SiO₂), colored by iron oxides and other impurities) — mineral

Tumbled jasper

Microcrystalline quartz (SiO₂), colored by iron oxides and other impurities

Polished orbicular jasper (likely ocean jasper) (Jasper, microcrystalline quartz (SiO₂), with iron-oxide and volcanic-mineral inclusions) — mineral

Polished orbicular jasper (likely ocean jasper)

Jasper, microcrystalline quartz (SiO₂), with iron-oxide and volcanic-mineral inclusions

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

Tumbled red-brown chert or jasper

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

Polished brecciated jasper (likely dragon-blood or leopard jasper) (Jasper, microcrystalline quartz (SiO₂) with iron-oxide inclusions) — mineral

Polished brecciated jasper (likely dragon-blood or leopard jasper)

Jasper, microcrystalline quartz (SiO₂) with iron-oxide inclusions

Tumbled yellow-orange jasper (Microcrystalline quartz (chalcedony), SiO₂, colored by iron oxides) — mineral

Tumbled yellow-orange jasper

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

Jasper pebble, likely brecciated jasper (Microcrystalline quartz (SiO₂), commonly with iron-oxide impurities) — mineral

Jasper pebble, likely brecciated jasper

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

Chert flake or weathered flint (Microcrystalline quartz (SiO₂), commonly termed chert or flint) — sedimentary

Chert flake or weathered flint

Microcrystalline quartz (SiO₂), commonly termed chert or flint

Polished banded jasper pebble (Jasper, a microcrystalline quartz variety (SiO₂), with iron-oxide and clay/mineral impurities) — mineral

Polished banded jasper pebble

Jasper, a microcrystalline quartz variety (SiO₂), with iron-oxide and clay/mineral impurities

Rhyolitic jasper / brecciated jasper (Silica-rich volcanic rock, chiefly microcrystalline quartz (SiO₂), with iron-oxide and clay/mineral impurities) — igneous

Rhyolitic jasper / brecciated jasper

Silica-rich volcanic rock, chiefly microcrystalline quartz (SiO₂), with iron-oxide and clay/mineral impurities