Rock Identifier

Category

Mineral, Specifically A Detrital Grain

Browse mineral, specifically a detrital grain specimens identified by the Rock Identifier community.

Learn about Mineral, Specifically A Detrital Grain in the encyclopedia

Glauconite

Hutcheonite

Halite

Sperrylite

Bostonite

Baddeleyite

Felsite

Anatase

Brookite

Talc

Euxenite

Eltyubyuite

Black Tourmaline (Schorl (Sodium Iron Aluminum Borosilicate Hydroxide)) — mineral

Black Tourmaline

Schorl (Sodium Iron Aluminum Borosilicate Hydroxide)

Banded Agate (Cryptocrystalline Quartz (SiO2)) — mineral

Banded Agate

Cryptocrystalline Quartz (SiO2)

Weathered pale-blue rock fragment (Unidentified; the image does not show enough detail for a reliable geological identification) — sedimentary

Weathered pale-blue rock fragment

Unidentified; the image does not show enough detail for a reliable geological identification

Yellow Jasper (Silicon Dioxide (SiO2) with iron hydroxides) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2) with iron hydroxides

Marble (Recrystallized Calcite (CaCO3)) — metamorphic

Marble

Recrystallized Calcite (CaCO3)

White Topaz (Aluminum silicate fluoride hydroxide [Al2SiO4(F,OH)2]) — gemstone

White Topaz

Aluminum silicate fluoride hydroxide [Al2SiO4(F,OH)2]

Amazonite (or Amazon Stone) (Potassium Feldspar (Microcline), K(AlSi3O8)) — mineral

Amazonite (or Amazon Stone)

Potassium Feldspar (Microcline), K(AlSi3O8)

Dragon Vein Agate (Silicon Dioxide (SiO2)) — mineral

Dragon Vein Agate

Silicon Dioxide (SiO2)

Green Quartz (Aventurine or Prase) (Silicon Dioxide (SiO2) with inclusions) — mineral

Green Quartz (Aventurine or Prase)

Silicon Dioxide (SiO2) with inclusions

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz with Iron Inclusion (Silicon Dioxide (SiO2)) — mineral

Milky Quartz with Iron Inclusion

Silicon Dioxide (SiO2)

Yellow Calcite (Calcium Carbonate (CaCO3)) — mineral

Yellow Calcite

Calcium Carbonate (CaCO3)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

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

Agate

Agate (Silicon Dioxide, SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Quartz (Silicon Dioxide, SiO2)) — mineral

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Satin Spar Selenite (Gypsum (Calcium Sulfate Dihydrate, CaSO4·2H2O)) — mineral

Satin Spar Selenite

Gypsum (Calcium Sulfate Dihydrate, CaSO4·2H2O)

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

Yellow Jasper

Silicon Dioxide (SiO2) with Iron inclusions

Chert (Jasper variety) (Chert (SiO2)) — sedimentary

Chert (Jasper variety)

Chert (SiO2)

Fossilized Knightia Fish (Knightia eocaena (set in fossiliferous Micritic Limestone)) — sedimentary

Fossilized Knightia Fish

Knightia eocaena (set in fossiliferous Micritic Limestone)

Orthoceras Fossil Limestone (Orthoceras sp. (Calcium Carbonate, CaCO3)) — sedimentary

Orthoceras Fossil Limestone

Orthoceras sp. (Calcium Carbonate, CaCO3)

Basalt (Basalt (Mafic Igneous Rock)) — igneous

Basalt

Basalt (Mafic Igneous Rock)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Agate (SiO2 (Silicon dioxide, chalcedony variety)) — Mineral

Agate

SiO2 (Silicon dioxide, chalcedony variety)

Quartz (possibly milky quartz) (Quartz (Silica; SiO₂)) — Mineral

Quartz (possibly milky quartz)

Quartz (Silica; SiO₂)

Ruby (Raw Corundum) (Alumina (Al2O3) with Chromium traces) — gemstone

Ruby (Raw Corundum)

Alumina (Al2O3) with Chromium traces

Sunstone (Feldspar variety) (Plagioclase Feldspar (Na,Ca)(Si,Al)3O8 with Hematite/Goethite inclusions) — mineral

Sunstone (Feldspar variety)

Plagioclase Feldspar (Na,Ca)(Si,Al)3O8 with Hematite/Goethite inclusions

Moldavite (Moldavite (Silica-rich glass, SiO2 + Al2O3)) — tektite

Moldavite

Moldavite (Silica-rich glass, SiO2 + Al2O3)

Weathered agate or chalcedony nodule (Microcrystalline quartz (SiO₂), likely chalcedony/agate) — mineral

Weathered agate or chalcedony nodule

Microcrystalline quartz (SiO₂), likely chalcedony/agate

Dalmatian Jasper (Peralkaline Quartz-Feldspar Rock with Arfvedsonite) — igneous

Dalmatian Jasper

Peralkaline Quartz-Feldspar Rock with Arfvedsonite

Charoite (Charoite (K(Ca,Na)2Si4O10(OH,F)·nH2O)) — metamorphic

Charoite

Charoite (K(Ca,Na)2Si4O10(OH,F)·nH2O)

Quartz with Feldspar and Mica (Pegmatite Fragment) (Granitic Pegmatite) — igneous

Quartz with Feldspar and Mica (Pegmatite Fragment)

Granitic Pegmatite

Red Sandstone (Arenite (SiO2 based with Fe2O3)) — sedimentary

Red Sandstone

Arenite (SiO2 based with Fe2O3)

Basalt (Aphanitic Mafic Igneous Rock) — igneous

Basalt

Aphanitic Mafic Igneous Rock

Carnelian (a variety of Chalcedony) (Silicon Dioxide (SiO2) with iron oxide impurities) — mineral

Carnelian (a variety of Chalcedony)

Silicon Dioxide (SiO2) with iron oxide impurities

Amber (Succinite (specifically for Baltic Amber), Formula: C10H16O) — Organic Gemstone (often associated with Sedimentary sequences)

Amber

Succinite (specifically for Baltic Amber), Formula: C10H16O

Organic Gemstone (often associated with Sedimentary sequences)

Citrine Quartz (Silicon Dioxide (SiO₂) with iron impurities) — mineral

Citrine Quartz

Silicon Dioxide (SiO₂) with iron impurities

Larimar (Pectolite) (NaCa2Si3O8(OH)) — mineral

Larimar (Pectolite)

NaCa2Si3O8(OH)

Larimar (Pectolite (NaCa2Si3O[OH])) — mineral

Larimar

Pectolite (NaCa2Si3O[OH])

Sapphire (Corundum (Al2O3)) — mineral

Sapphire

Corundum (Al2O3)