Rock Identifier

Category

Sedimentary Or Igneous (Host Environment)

Browse sedimentary or igneous (host environment) specimens identified by the Rock Identifier community.

Learn about Sedimentary Or Igneous (Host Environment) in the encyclopedia

Carbonatite

Emerald in Matrix

Emerald in Matrix

Conglomerate

Aquamarine Matrix

Aquamarine Matrix

Quartzite Sandstone

Quartzite Sandstone

Breccia

Ironstone

Hot Pink Tourmaline

Hot Pink Tourmaline

Lamproite

Pegmatite

Matrix Opal

Troctolite

Quartz vein in foliated metamorphic rock (Likely quartz-bearing schist or gneiss; visible crystal is quartz (SiO₂)) — metamorphic

Quartz vein in foliated metamorphic rock

Likely quartz-bearing schist or gneiss; visible crystal is quartz (SiO₂)

Carnelian Agate (Silicon Dioxide (SiO2) - variety of Chalcedony) — mineral

Carnelian Agate

Silicon Dioxide (SiO2) - variety of Chalcedony

Quartz (Drusy/Crystalline) (Silicon Dioxide (SiO2)) — mineral

Quartz (Drusy/Crystalline)

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Rose Quartz or Jasper variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Rose Quartz or Jasper variety)

Silicon Dioxide (SiO2)

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

Jasper with Quartz Druzy

Silicon Dioxide (SiO2)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Pyrite-bearing Rock (Iron Sulfide (FeS2) associated with host rock) — mineral

Pyrite-bearing Rock

Iron Sulfide (FeS2) associated with host rock

Pyrite (on host rock) (Iron Sulfide (FeS2)) — mineral

Pyrite (on host rock)

Iron Sulfide (FeS2)

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

Chert (Flint)

Microcrystalline Quartz (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

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

Chalcedony (Agate/Carnelian)

Silicon Dioxide (SiO2)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

White Quartz (Silicon Dioxide (SiO2)) — mineral

White Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Pyrite (on Shale/Matrix) (Iron Disulfide (FeS2)) — mineral

Pyrite (on Shale/Matrix)

Iron Disulfide (FeS2)

Rutilated Quartz (Rutile in Quartz (SiO2 with TiO2 inclusions)) — mineral

Rutilated Quartz

Rutile in Quartz (SiO2 with TiO2 inclusions)

Quartz (Milky or Druzy Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky or Druzy Quartz)

Silicon Dioxide (SiO2)

Gneissic Schist (Gneiss-schist (Metamorphic rock)) — metamorphic

Gneissic Schist

Gneiss-schist (Metamorphic rock)

Quartz Vein in Host Rock (Silicon Dioxide (SiO2) within Metasedimentary or Igneous Matrix) — metamorphic

Quartz Vein in Host Rock

Silicon Dioxide (SiO2) within Metasedimentary or Igneous Matrix

Turquoise (CuAl6(PO4)4(OH)8·4H2O) — mineral

Turquoise

CuAl6(PO4)4(OH)8·4H2O

Druzy Quartz (Silicon Dioxide (SiO2)) — mineral

Druzy Quartz

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

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

Milky Quartz (Vein Quartz)

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal) (Quartz (Silicon Dioxide, SiO2)) — mineral

Clear Quartz (Rock Crystal)

Quartz (Silicon Dioxide, SiO2)

Chert (River Pebble) (Silicon Dioxide (SiO2)) — sedimentary

Chert (River Pebble)

Silicon Dioxide (SiO2)

Fossiliferous conglomerate (Bioclastic, carbonate-cemented conglomerate (likely limestone matrix)) — sedimentary

Fossiliferous conglomerate

Bioclastic, carbonate-cemented conglomerate (likely limestone matrix)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Druzy Quartz Geode (Partially Open) (Silicon Dioxide (SiO2) within Sedimentary Host Rock) — sedimentary

Druzy Quartz Geode (Partially Open)

Silicon Dioxide (SiO2) within Sedimentary Host Rock

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Garnet Gneiss (Gneiss containing Almandine Garnet) — metamorphic

Garnet Gneiss

Gneiss containing Almandine Garnet

Quartz (or Chalcedony) Specimen (Silicon Dioxide (SiO2)) — mineral

Quartz (or Chalcedony) Specimen

Silicon Dioxide (SiO2)

Weathered quartz-bearing rock fragment (Indeterminate; likely quartz-rich granite or silicified host rock with iron-oxide staining) — mineral

Weathered quartz-bearing rock fragment

Indeterminate; likely quartz-rich granite or silicified host rock with iron-oxide staining

Agate (or Operculum / Fossil Shell) (Silicon Dioxide (SiO2)) — mineral

Agate (or Operculum / Fossil Shell)

Silicon Dioxide (SiO2)

Quartz-veined Basalt or Diabase Pebble (Igneous rock with hydrothermal quartz vein) — igneous

Quartz-veined Basalt or Diabase Pebble

Igneous rock with hydrothermal quartz vein

Raw quartz crystal (Quartz (silicon dioxide, SiO₂), likely milky or iron-stained quartz) — mineral

Raw quartz crystal

Quartz (silicon dioxide, SiO₂), likely milky or iron-stained quartz

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

Milky Quartz with Iron Staining

Silicon Dioxide (SiO2)

Garnet in Host Rock (Garnet Group (A3B2(SiO4)3)) — metamorphic

Garnet in Host Rock

Garnet Group (A3B2(SiO4)3)

Greenstone (Metabasalt) — metamorphic

Greenstone

Metabasalt

Turquoise (Turquoise (CuAl6(PO4)4(OH)8·4H2O)) — mineral

Turquoise

Turquoise (CuAl6(PO4)4(OH)8·4H2O)

Blue Apatite (Calcium Fluorophosphate (Ca5(PO4)3F)) — mineral

Blue Apatite

Calcium Fluorophosphate (Ca5(PO4)3F)