Rock Identifier

Category

Mineral (Or Mineraloid If Microcrystalline)

Browse mineral (or mineraloid if microcrystalline) specimens identified by the Rock Identifier community.

Learn about Mineral (Or Mineraloid If Microcrystalline) in the encyclopedia

Shungite

Flower Jasper

Feather Jasper

Dendritic Jasper

Blue Jasper

Sperrylite

Brookite

Leopard Skin Jasper

Leopard Skin Jasper

Banalsite

Black Shale

Garnierite

Wulfenite

Jasper (Zebra Jasper) (Silicon Dioxide (SiO2) with impurities) — sedimentary

Jasper (Zebra Jasper)

Silicon Dioxide (SiO2) with impurities

Banded Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Banded Chert

Microcrystalline Quartz (SiO2)

Chert Pebble with Quartz Veining (Microcrystalline Quartz (SiO2)) — sedimentary

Chert Pebble with Quartz Veining

Microcrystalline Quartz (SiO2)

Green Aventurine (Aventurine Quartz (SiO2 with Fuchsite inclusions)) — mineral

Green Aventurine

Aventurine Quartz (SiO2 with Fuchsite inclusions)

Tumbled orange carnelian (likely) (Chalcedony, microcrystalline quartz (SiO₂)) — gemstone

Tumbled orange carnelian (likely)

Chalcedony, microcrystalline quartz (SiO₂)

Dalmatian Stone (commonly called Dalmatian Jasper) (Peralkaline Rock (mixed Feldspar, Quartz, and Arfvedsonite)) — igneous

Dalmatian Stone (commonly called Dalmatian Jasper)

Peralkaline Rock (mixed Feldspar, Quartz, and Arfvedsonite)

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Tufa (Calcareous Tufa (CaCO3)) — sedimentary

Tufa

Calcareous Tufa (CaCO3)

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

Chalcedony (Agate / Moss Agate)

Silicon Dioxide (SiO2)

Limonite (Ironstone) (FeO(OH)·nH2O) — sedimentary

Limonite (Ironstone)

FeO(OH)·nH2O

Green Jasper (Silicon Dioxide (SiO2) with impurities) — sedimentary

Green Jasper

Silicon Dioxide (SiO2) with impurities

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

Quartz (Jasper / Chert)

Silicon Dioxide (SiO2)

Tumbled jasper, likely ocean jasper (Microcrystalline quartz (chalcedony), SiO₂, with iron-oxide and other mineral inclusions) — mineral

Tumbled jasper, likely ocean jasper

Microcrystalline quartz (chalcedony), SiO₂, with iron-oxide and other mineral inclusions

Jasper (likely red/brown jasper pebble) (Microcrystalline quartz (SiO₂), an opaque variety of chalcedony; exact identification is uncertain from the photo) — sedimentary

Jasper (likely red/brown jasper pebble)

Microcrystalline quartz (SiO₂), an opaque variety of chalcedony; exact identification is uncertain from the photo

Chert (Arrowhead Preform or Flake) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Arrowhead Preform or Flake)

Microcrystalline Quartz (SiO2)

Chert Pebble with Inclusion (Microcrystalline Quartz (SiO2)) — sedimentary

Chert Pebble with Inclusion

Microcrystalline Quartz (SiO2)

Blue aventurine or dyed blue quartz crescent (Quartz, silicon dioxide (SiO₂), likely aventurine quartz; exact identification requires testing) — mineral

Blue aventurine or dyed blue quartz crescent

Quartz, silicon dioxide (SiO₂), likely aventurine quartz; exact identification requires testing

Green Aventurine (Aventurine Quartz (SiO2 with Fuchsite inclusions)) — mineral

Green Aventurine

Aventurine Quartz (SiO2 with Fuchsite inclusions)

Tiger's Eye (Silicon dioxide with crocidolite inclusions (SiO2)) — mineral

Tiger's Eye

Silicon dioxide with crocidolite inclusions (SiO2)

Jasper with Quartz Vein (Silicon Dioxide (SiO2)) — sedimentary

Jasper with Quartz Vein

Silicon Dioxide (SiO2)

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

Agate Geode (Silicon Dioxide (SiO2) - Chalcedony variety) — sedimentary

Agate Geode

Silicon Dioxide (SiO2) - Chalcedony variety

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

Flint / Chert

Microcrystalline Quartz (SiO2)

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

Chert (Jasper variation)

Microcrystalline Quartz (SiO2)

Yellow Ochre / Limonite (Limonite (inter-mixed iron oxides and hydroxides, primarily FeO(OH)·nH2O)) — mineral

Yellow Ochre / Limonite

Limonite (inter-mixed iron oxides and hydroxides, primarily FeO(OH)·nH2O)

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

Banded Chert / Flint Pebble

Microcrystalline Quartz (SiO2)

Jasper Pebble (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper Pebble

Microcrystalline Quartz (SiO2)

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

Chert (Flint)

Microcrystalline Quartz (SiO2)

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

Chert / River Jasper

Microcrystalline Quartz (SiO2)

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

Polished brown jasper pebble

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

Tumbled jasper pebble (Jasper, microcrystalline quartz (SiO₂), commonly iron-oxide stained) — mineral

Tumbled jasper pebble

Jasper, microcrystalline quartz (SiO₂), commonly iron-oxide stained

Tumbled jasper (likely yellow/orbicular jasper) (Microcrystalline quartz, SiO₂, with iron-oxide and other mineral inclusions) — mineral

Tumbled jasper (likely yellow/orbicular jasper)

Microcrystalline quartz, SiO₂, with iron-oxide and other mineral inclusions

Jasper (Silicon Dioxide (Microcrystalline Quartz, SiO2)) — sedimentary

Jasper

Silicon Dioxide (Microcrystalline Quartz, SiO2)

Dalmatian Stone (Peralkaline rhyolite) — igneous

Dalmatian Stone

Peralkaline rhyolite

Chert (vuggy variety) (Microcrystalline silica (SiO2)) — sedimentary

Chert (vuggy variety)

Microcrystalline silica (SiO2)

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

Polished agate slice

Agate, a banded variety of chalcedony (microcrystalline SiO₂)

Kidney Stone (Urolith / Calcium Oxalate Stone) (Calcium Oxalate Monohydrate (Whewellite) / Calcium Oxalate Dihydrate (Weddellite)) — mineral

Kidney Stone (Urolith / Calcium Oxalate Stone)

Calcium Oxalate Monohydrate (Whewellite) / Calcium Oxalate Dihydrate (Weddellite)

Limonite with Quartz (Hydrated Iron Oxide Hydroxide, FeO(OH)·nH₂O with SiO₂) — mineral

Limonite with Quartz

Hydrated Iron Oxide Hydroxide, FeO(OH)·nH₂O with SiO₂

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Limonite (FeO(OH)·nH2O) — mineral

Limonite

FeO(OH)·nH2O

Limonite/Goethite (Iron Ore) (Hydrous ferric oxides (FeO(OH)·nH2O)) — mineral

Limonite/Goethite (Iron Ore)

Hydrous ferric oxides (FeO(OH)·nH2O)