Rock Identifier

Category

Igneous And Metamorphic Derivative (Weathered)

Browse igneous and metamorphic derivative (weathered) specimens identified by the Rock Identifier community.

Learn about Igneous And Metamorphic Derivative (Weathered) in the encyclopedia

Matte Obsidian

Carbonatite

Frosted Obsidian

Cordierite Hornfels

Cordierite Hornfels

Metabasalt

Eulysite

Migmatite

Anthracite

Metaquartzite

Slate

Marble

Hornfels

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz pebble (Quartz (SiO2)) — sedimentary

Quartz pebble

Quartz (SiO2)

Quartz pebble (Silicon dioxide (SiO2)) — sedimentary

Quartz pebble

Silicon dioxide (SiO2)

Quartz (Iron-stained River Pebble) (Silicon Dioxide (SiO2)) — mineral

Quartz (Iron-stained River Pebble)

Silicon Dioxide (SiO2)

Quartz Sand Grain / Micro Crystal (Silicon Dioxide (SiO2)) — mineral

Quartz Sand Grain / Micro Crystal

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz (partially iron-stained) (Silicon Dioxide (SiO2)) — mineral

Quartz (partially iron-stained)

Silicon Dioxide (SiO2)

Sand and Gravel (Quartz-rich) (Unconsolidated fluvial/beach sediment (primarily Silica/SiO2)) — sedimentary

Sand and Gravel (Quartz-rich)

Unconsolidated fluvial/beach sediment (primarily Silica/SiO2)

Yellow Sapphire (Corundum (Al2O3) with iron impurities) — mineral

Yellow Sapphire

Corundum (Al2O3) with iron impurities

Sapphire Rough (Corundum) (Corundum (Aluminum Oxide, Al2O3)) — mineral

Sapphire Rough (Corundum)

Corundum (Aluminum Oxide, Al2O3)

River Stone (likely Basalt or Diabase) (Mafic Igneous Rock (likely Basalt)) — igneous

River Stone (likely Basalt or Diabase)

Mafic Igneous Rock (likely Basalt)

Unidentified weathered rock fragments (Likely mixed quartz- and feldspar-bearing silicate material; exact identification requires testing) — mineral

Unidentified weathered rock fragments

Likely mixed quartz- and feldspar-bearing silicate material; exact identification requires testing

Quartz on Host Rock (Silicon Dioxide (SiO2)) — mineral

Quartz on Host Rock

Silicon Dioxide (SiO2)

Milky quartz vein fragment (Quartz (silicon dioxide, SiO₂), massive/microcrystalline variety) — mineral

Milky quartz vein fragment

Quartz (silicon dioxide, SiO₂), massive/microcrystalline variety

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

Cloudy Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Peacock Ore (Bornite (Cu5FeS4)) — mineral

Peacock Ore

Bornite (Cu5FeS4)

Green Quartz (Prasiolite/Adventurine) (Silicon Dioxide with inclusions (SiO2)) — mineral

Green Quartz (Prasiolite/Adventurine)

Silicon Dioxide with inclusions (SiO2)

Garnet (specifically Almandine) (Almandine - Fe3Al2(SiO4)3) — metamorphic

Garnet (specifically Almandine)

Almandine - Fe3Al2(SiO4)3

Quartz Cobble (Quartz (Silicon Dioxide, SiO2)) — Mineral

Quartz Cobble

Quartz (Silicon Dioxide, SiO2)

Quartz (River Pebble) (Quartz (Silicon Dioxide, SiO2)) — mineral

Quartz (River Pebble)

Quartz (Silicon Dioxide, SiO2)

Quartzite pebble (Quartzite (SiO2)) — metamorphic

Quartzite pebble

Quartzite (SiO2)

Galena (Lead Sulfide (PbS)) — mineral

Galena

Lead Sulfide (PbS)

Granite Pebble (Intrusive Igneous Rock (Granite)) — igneous

Granite Pebble

Intrusive Igneous Rock (Granite)

Weathered granite or granitic gneiss (Granite; mainly quartz (SiO₂), feldspar, and mica, possibly with metamorphic foliation) — igneous

Weathered granite or granitic gneiss

Granite; mainly quartz (SiO₂), feldspar, and mica, possibly with metamorphic foliation

Strawberry Quartz (Quartz with Hematite inclusions) (Silicon Dioxide with Iron Oxide (SiO2 + Fe2O3)) — mineral

Strawberry Quartz (Quartz with Hematite inclusions)

Silicon Dioxide with Iron Oxide (SiO2 + Fe2O3)

Milky quartz (rough quartz fragment) (Quartz, silicon dioxide (SiO₂)) — mineral

Milky quartz (rough quartz fragment)

Quartz, silicon dioxide (SiO₂)

Pale blue-gray quartz-rich pebble (tentative) (Quartz, SiO₂, possibly chalcedony or a weathered metamorphic fragment) — mineral

Pale blue-gray quartz-rich pebble (tentative)

Quartz, SiO₂, possibly chalcedony or a weathered metamorphic fragment

Quartz (River Pebble) (Silicon Dioxide (SiO2)) — mineral

Quartz (River Pebble)

Silicon Dioxide (SiO2)

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

Milky Quartz with Iron Staining

Quartz (Silicon Dioxide, SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Likely weathered sandstone or quartzite (Quartz-rich sandstone; possibly metamorphosed to quartzite (SiO₂-dominant)) — sedimentary

Likely weathered sandstone or quartzite

Quartz-rich sandstone; possibly metamorphosed to quartzite (SiO₂-dominant)

Milky Quartz with inclusions (Silicon Dioxide (SiO2)) — mineral

Milky Quartz with inclusions

Silicon Dioxide (SiO2)

Yellow Calcite (Calcium Carbonate (CaCO3)) — mineral

Yellow Calcite

Calcium Carbonate (CaCO3)

Yellow Calcite (Calcium Carbonate (CaCO3)) — mineral

Yellow Calcite

Calcium Carbonate (CaCO3)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Black Tourmaline (Schorl (NaFe2+3Al6(Si6O18)(BO3)3(OH)4)) — mineral

Black Tourmaline

Schorl (NaFe2+3Al6(Si6O18)(BO3)3(OH)4)

Blue Quartz (Silicon Dioxide (SiO2) with inclusions) — mineral

Blue Quartz

Silicon Dioxide (SiO2) with inclusions

Citrine (Silicon Dioxide (SiO2) with ferric iron impurities) — gemstone

Citrine

Silicon Dioxide (SiO2) with ferric iron impurities