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)

Moonstone with Black Tourmaline (Feldspar (KAlSi3O8) with inclusions of Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)) — mineral

Moonstone with Black Tourmaline

Feldspar (KAlSi3O8) with inclusions of Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)

Granite Pebble (Phaneritic Felsic Igneous Rock) — igneous

Granite Pebble

Phaneritic Felsic Igneous Rock

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Translucent quartz pebble (likely milky quartz) (Quartz, SiO₂; exact variety cannot be confirmed from the photograph) — mineral

Translucent quartz pebble (likely milky quartz)

Quartz, SiO₂; exact variety cannot be confirmed from the photograph

Quartz with Iron Staining (SiO2 with Fe oxide impurities) — mineral

Quartz with Iron Staining

SiO2 with Fe oxide impurities

Sapphire (Corundum (Al2O3) with traces of Iron and Titanium) — gemstone

Sapphire

Corundum (Al2O3) with traces of Iron and Titanium

Rough White Zircon (Zircon (Zirconium Silicate, ZrSiO4)) — mineral

Rough White Zircon

Zircon (Zirconium Silicate, ZrSiO4)

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

Quartz Pebble (Smoky Quartz / Chalcedony)

Silicon Dioxide (SiO2)

Beach Pebble (Quartz / Quartzite) (Silicon Dioxide (SiO2)) — sedimentary

Beach Pebble (Quartz / Quartzite)

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Feldspar (with Quartz / Iron Staining) (Potassium Feldspar / Plagioclase (KAlSi3O8 - NaAlSi3O8 to CaAl2Si2O8)) — mineral

Feldspar (with Quartz / Iron Staining)

Potassium Feldspar / Plagioclase (KAlSi3O8 - NaAlSi3O8 to CaAl2Si2O8)

Chalcopyrite in Quartz matrix (Chalcopyrite (CuFeS2) with secondary Malachite (Cu2CO3(OH)2)) — mineral

Chalcopyrite in Quartz matrix

Chalcopyrite (CuFeS2) with secondary Malachite (Cu2CO3(OH)2)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz (Grain) (Silicon Dioxide (SiO2)) — mineral

Quartz (Grain)

Silicon Dioxide (SiO2)

Rough Sapphire (Corundum) (Corundum (Al2O3)) — mineral

Rough Sapphire (Corundum)

Corundum (Al2O3)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Smoky quartz-bearing feldspar pegmatite (Quartz (SiO₂) with feldspar, likely a granitic pegmatite) — igneous

Smoky quartz-bearing feldspar pegmatite

Quartz (SiO₂) with feldspar, likely a granitic pegmatite

Basalt Pebble (Extrusive mafic igneous rock) — igneous

Basalt Pebble

Extrusive mafic igneous rock

Milky quartz pebbles (Quartz, silicon dioxide (SiO₂)) — mineral

Milky quartz pebbles

Quartz, silicon dioxide (SiO₂)

Likely weathered granite or granitic gneiss (Quartz–feldspar–mica rock; possibly biotite granite or orthogneiss) — igneous

Likely weathered granite or granitic gneiss

Quartz–feldspar–mica rock; possibly biotite granite or orthogneiss

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

Milky quartz

Quartz (silicon dioxide, SiO₂)

Tumbled quartz-rich pebble, likely milky quartz (Quartz (silicon dioxide, SiO₂), possibly iron-stained milky quartz) — mineral

Tumbled quartz-rich pebble, likely milky quartz

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

White quartz pebble (likely milky quartz) (Quartz, silicon dioxide (SiO₂)) — mineral

White quartz pebble (likely milky quartz)

Quartz, silicon dioxide (SiO₂)

Quartz (specifically Citrine or Yellow Quartzite pebble) (Silicon Dioxide (SiO2)) — mineral

Quartz (specifically Citrine or Yellow Quartzite pebble)

Silicon Dioxide (SiO2)

Milky quartz in weathered host rock (Quartz, silicon dioxide (SiO₂), likely with iron-stained feldspar or altered matrix) — mineral

Milky quartz in weathered host rock

Quartz, silicon dioxide (SiO₂), likely with iron-stained feldspar or altered matrix

Black Tourmaline (Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)) — mineral

Black Tourmaline

Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)

Yellow Quartz (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz

Silicon Dioxide (SiO2)

Citrine (Silicon Dioxide (SiO2)) — mineral

Citrine

Silicon Dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Citrine Quartz (Silicon Dioxide (SiO2)) — mineral

Citrine Quartz

Silicon Dioxide (SiO2)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

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

Milky quartz

Quartz (silicon dioxide, SiO₂)

Granite (likely weathered granite or granitic gneiss) (Granite; mainly quartz (SiO₂), feldspar, and mica) — igneous

Granite (likely weathered granite or granitic gneiss)

Granite; mainly quartz (SiO₂), feldspar, and mica

Lichen-covered graywacke or granitic glacial cobble (Indeterminate; likely quartz–feldspar–mica rock, possibly weathered granite or granodiorite) — igneous

Lichen-covered graywacke or granitic glacial cobble

Indeterminate; likely quartz–feldspar–mica rock, possibly weathered granite or granodiorite

Peach Moonstone (Orthoclase (Potassium Aluminum Silicate, KAlSi3O8)) — mineral

Peach Moonstone

Orthoclase (Potassium Aluminum Silicate, KAlSi3O8)

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

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

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

Milky quartz

Quartz, silicon dioxide (SiO₂)

Quartz (Small Fragment) (Silicon Dioxide (SiO2)) — mineral

Quartz (Small Fragment)

Silicon Dioxide (SiO2)

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

Milky Quartz on Matrix

Quartz (Silicon Dioxide, SiO2)