Rock Identifier

Category

Mineral (Specifically A Variety Of Chalcedony, Which Is Microcrystalline Quartz)

Browse mineral (specifically a variety of chalcedony, which is microcrystalline quartz) specimens identified by the Rock Identifier community.

Learn about Mineral (Specifically A Variety Of Chalcedony, Which Is Microcrystalline Quartz) in the encyclopedia

Chalcedony

Blue Chalcedony

Blue Chalcedony

Flower Jasper

Feather Jasper

Red Jasper

Brown Jasper

Prase

Dendritic Jasper

Royal Imperial Jasper

Scenic Jasper

Carrasite Jasper

Map Jasper

Ocean Jasper (Spherulitic Chalcedony (SiO2)) — mineral

Ocean Jasper

Spherulitic Chalcedony (SiO2)

Carnelian (Chalcedony (SiO2)) — mineral

Carnelian

Chalcedony (SiO2)

Blue Chalcedony (Silicon Dioxide (SiO2)) — mineral

Blue Chalcedony

Silicon Dioxide (SiO2)

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

Yellow Jasper

Silicon Dioxide with iron inclusions (SiO2)

Agate Nodule (Silicon dioxide (Chalcedony/Quartz), SiO2) — sedimentary

Agate Nodule

Silicon dioxide (Chalcedony/Quartz), SiO2

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

Tumbled jasper or chalcedony

Microcrystalline quartz (SiO₂), likely brown jasper/chalcedony

Tumbled jasper or chalcedony (Microcrystalline quartz (SiO₂), probably iron-stained jasper/chalcedony) — mineral

Tumbled jasper or chalcedony

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

Ocean Jasper (Silicon Dioxide (SiO2) with various inclusions) — Mineral (Variety of Quartz)

Ocean Jasper

Silicon Dioxide (SiO2) with various inclusions

Mineral (Variety of Quartz)

Polished brecciated jasper (Jasper, microcrystalline quartz (SiO₂), commonly containing hematite, goethite, and clay minerals) — mineral

Polished brecciated jasper

Jasper, microcrystalline quartz (SiO₂), commonly containing hematite, goethite, and clay minerals

Polished multicolored jasper (Jasper, an opaque microcrystalline variety of quartz (SiO₂), likely iron- and manganese-stained chert) — mineral

Polished multicolored jasper

Jasper, an opaque microcrystalline variety of quartz (SiO₂), likely iron- and manganese-stained chert

Tumbled white chalcedony (likely milky quartz) (Chalcedony, cryptocrystalline SiO₂; possibly common quartz or white agate) — mineral

Tumbled white chalcedony (likely milky quartz)

Chalcedony, cryptocrystalline SiO₂; possibly common quartz or white agate

Polished green agate (likely dyed) (Chalcedony, microcrystalline SiO₂; agate variety) — mineral

Polished green agate (likely dyed)

Chalcedony, microcrystalline SiO₂; agate variety

Polished carnelian jasper / brecciated jasper (Microcrystalline quartz (SiO₂), chalcedony with iron-oxide pigments and opaque jasper fragments) — gemstone

Polished carnelian jasper / brecciated jasper

Microcrystalline quartz (SiO₂), chalcedony with iron-oxide pigments and opaque jasper fragments

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

Red Jasper

Silicon Dioxide (SiO2) with Hematite inclusions

Green Calcite (Onyx Marble) (Calcium Carbonate (CaCO3)) — mineral

Green Calcite (Onyx Marble)

Calcium Carbonate (CaCO3)

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

Jasper (Red and Yellow Jasper)

SiO2 (Silicon Dioxide) with Iron Oxide inclusions

Polished brecciated jasper (likely) (Jasper, microcrystalline quartz (SiO₂), with contrasting mineral fragments or veins) — mineral

Polished brecciated jasper (likely)

Jasper, microcrystalline quartz (SiO₂), with contrasting mineral fragments or veins

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

Carnelian

Silicon Dioxide (Chalcedony variety), SiO2

Chalcedony (Common Opal variant or Quartz) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Common Opal variant or Quartz)

Silicon Dioxide (SiO2)

Red Jasper (Jasper (Silicon Dioxide, SiO2)) — sedimentary

Red Jasper

Jasper (Silicon Dioxide, SiO2)

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

Agate

Agate (Silicon Dioxide, SiO2)

Tiger's Eye (Tiger's Eye (a variety of Chalcedony, which is a microcrystalline quartz with fibrous inclusions of oxidized crocidolite)) — Mineral

Tiger's Eye

Tiger's Eye (a variety of Chalcedony, which is a microcrystalline quartz with fibrous inclusions of oxidized crocidolite)

Green Onyx (Banded Calcite / Travertine) (Calcite (CaCO3) / Travertine / Aragonite) — sedimentary

Green Onyx (Banded Calcite / Travertine)

Calcite (CaCO3) / Travertine / Aragonite

Chalcedony with Druzy Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Chalcedony with Druzy Quartz Geode

Silicon Dioxide (SiO2)

Yellow Jasper (Cryptocrystalline Quartz (SiO2 with Iron Hydroxide inclusions)) — sedimentary

Yellow Jasper

Cryptocrystalline Quartz (SiO2 with Iron Hydroxide inclusions)

Tumbled chalcedony/agate (likely iron-stained quartz) (Microcrystalline quartz, SiO₂; chalcedony with possible agate banding and iron-oxide inclusions) — mineral

Tumbled chalcedony/agate (likely iron-stained quartz)

Microcrystalline quartz, SiO₂; chalcedony with possible agate banding and iron-oxide inclusions

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Flint with Chalk Cortex (Chert (Microcrystalline Quartz, SiO2)) — sedimentary

Flint with Chalk Cortex

Chert (Microcrystalline Quartz, SiO2)

Polished agate slice (Agate, a banded variety of chalcedony (microcrystalline SiO₂)) — mineral

Polished agate slice

Agate, a banded variety of chalcedony (microcrystalline SiO₂)

Moss Agate (Silicon Dioxide (SiO2) with mineral inclusions of hornblende or chlorite) — Mineral (variety of Chalcedony)

Moss Agate

Silicon Dioxide (SiO2) with mineral inclusions of hornblende or chlorite

Mineral (variety of Chalcedony)

Tumbled agate or chalcedony (Microcrystalline quartz (SiO₂), likely agate/chalcedony with green inclusions) — gemstone

Tumbled agate or chalcedony

Microcrystalline quartz (SiO₂), likely agate/chalcedony with green inclusions

Tumbled brecciated jasper (likely) (Jasper, an opaque microcrystalline variety of quartz (SiO₂), with iron-oxide-rich zones) — mineral

Tumbled brecciated jasper (likely)

Jasper, an opaque microcrystalline variety of quartz (SiO₂), with iron-oxide-rich zones

Quartz (Smoky Quartz / Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Quartz (Smoky Quartz / Chalcedony)

Silicon Dioxide (SiO2)

Agate (specifically a Yellow/Honey Agate) (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — mineral

Agate (specifically a Yellow/Honey Agate)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Jasper (Silicon dioxide (Quartz variety), SiO2) — sedimentary

Jasper

Silicon dioxide (Quartz variety), SiO2

Red jasper pebble (Microcrystalline quartz (SiO₂), colored by iron oxides) — mineral

Red jasper pebble

Microcrystalline quartz (SiO₂), colored by iron oxides

Red jasper (likely) (Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored by iron oxides) — mineral

Red jasper (likely)

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

Quartz (Microcrystalline variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Microcrystalline variety)

Silicon Dioxide (SiO2)

Tumbled orange chalcedony (probable carnelian) (Cryptocrystalline quartz, SiO₂; reddish-orange variety commonly called carnelian) — gemstone

Tumbled orange chalcedony (probable carnelian)

Cryptocrystalline quartz, SiO₂; reddish-orange variety commonly called carnelian

Tumbled purple chalcedony or amethyst (Microcrystalline quartz (SiO₂), possibly amethyst variety) — mineral

Tumbled purple chalcedony or amethyst

Microcrystalline quartz (SiO₂), possibly amethyst variety

Tumbled ocean jasper (orbicular jasper), likely brecciated variety (Jasper: microcrystalline quartz (SiO₂) with iron-oxide staining and other silicate inclusions) — metamorphic

Tumbled ocean jasper (orbicular jasper), likely brecciated variety

Jasper: microcrystalline quartz (SiO₂) with iron-oxide staining and other silicate inclusions

Jasper (Silicon Dioxide (SiO2)) — sedimentary

Jasper

Silicon Dioxide (SiO2)