Rock Identifier

Category

Antropogenic (Man Made Glass Byproduct)

Browse antropogenic (man made glass byproduct) specimens identified by the Rock Identifier community.

Learn about Antropogenic (Man Made Glass Byproduct) in the encyclopedia

Opalite

Goldstone

Blue Goldstone

Zincite

Mint Obsidian

Blue Obsidian

Green Obsidian

Crimson Obsidian

Cherry Obsidian

Violet Obsidian

Cobalt Blue Obsidian

Tangerine Obsidian

Black basalt fragment (Basalt; fine-grained mafic volcanic rock, chiefly plagioclase and pyroxene with possible olivine) — igneous

Black basalt fragment

Basalt; fine-grained mafic volcanic rock, chiefly plagioclase and pyroxene with possible olivine

Apatite (Ca5(PO4)3(F,Cl,OH)) — mineral

Apatite

Ca5(PO4)3(F,Cl,OH)

Limestone Gravel (Sedimentary Calcium Carbonate (CaCO3)) — sedimentary

Limestone Gravel

Sedimentary Calcium Carbonate (CaCO3)

Granite (Phaneritic plutonic rock (Quartz-Alkali Feldspar-Plagioclase)) — igneous

Granite

Phaneritic plutonic rock (Quartz-Alkali Feldspar-Plagioclase)

Granite (Felsic Plutonic Rock (primarily SiO2)) — igneous

Granite

Felsic Plutonic Rock (primarily SiO2)

Granite (Phaneritic plutonic rock (Quartz + Feldspar + Mica)) — igneous

Granite

Phaneritic plutonic rock (Quartz + Feldspar + Mica)

Granite (Phaneritic Igneous Rock (primarily Quartz, Feldspar, Mica)) — igneous

Granite

Phaneritic Igneous Rock (primarily Quartz, Feldspar, Mica)

Flint (chert), possibly fossil-bearing (Microcrystalline quartz (SiO₂), chalcedony/flint variety) — sedimentary

Flint (chert), possibly fossil-bearing

Microcrystalline quartz (SiO₂), chalcedony/flint variety

Likely smoky quartz-bearing rock or quartz crystal (Quartz, silicon dioxide (SiO₂), possibly smoky quartz with iron- or irradiation-related coloration) — mineral

Likely smoky quartz-bearing rock or quartz crystal

Quartz, silicon dioxide (SiO₂), possibly smoky quartz with iron- or irradiation-related coloration

Quartzite Pebble (Metamorphosed Quartz Arenite (SiO2)) — metamorphic

Quartzite Pebble

Metamorphosed Quartz Arenite (SiO2)

Chert (and Cherty Limestone) (Silicon Dioxide (SiO2) with impurities) — sedimentary

Chert (and Cherty Limestone)

Silicon Dioxide (SiO2) with impurities

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

Ferruginous Quartz

Silicon Dioxide with Iron Oxide inclusions (SiO2 + Fe2O3)

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

Citrine Quartz

Silicon Dioxide (SiO2) with ferric iron impurities

Red granite or granitic gneiss pebble (Felsic granitoid, likely quartz–feldspar–biotite granite; possible weakly gneissic texture) — igneous

Red granite or granitic gneiss pebble

Felsic granitoid, likely quartz–feldspar–biotite granite; possible weakly gneissic texture

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Sandstone (Sedimentary Rock (Quartzose Sandstone)) — sedimentary

Sandstone

Sedimentary Rock (Quartzose Sandstone)

Sandstone (Quartzose Sandstone) (Clastic Sedimentary Rock (primarily SiO2)) — sedimentary

Sandstone (Quartzose Sandstone)

Clastic Sedimentary Rock (primarily SiO2)

Quartz-rich metamorphic rock, likely quartzite (Quartzite; predominantly quartz (SiO₂), with minor feldspar, mica, and iron-oxide staining) — metamorphic

Quartz-rich metamorphic rock, likely quartzite

Quartzite; predominantly quartz (SiO₂), with minor feldspar, mica, and iron-oxide staining

Tumbled carnelian (reddish chalcedony) (Carnelian, a cryptocrystalline variety of quartz (SiO₂)) — gemstone

Tumbled carnelian (reddish chalcedony)

Carnelian, a cryptocrystalline variety of quartz (SiO₂)

Sea Glass (Amorphous silicon dioxide (glass)) — mineral

Sea Glass

Amorphous silicon dioxide (glass)

Calcite (Calcite (CaCO3)) — Mineral

Calcite

Calcite (CaCO3)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Blue Chalcedony and Picture Jasper Beads (Blue Chalcedony (SiO2), Picture Jasper (SiO2)) — Mineral

Blue Chalcedony and Picture Jasper Beads

Blue Chalcedony (SiO2), Picture Jasper (SiO2)

Fluorite (Fluorite (Calcium Fluoride, CaF2)) — Mineral

Fluorite

Fluorite (Calcium Fluoride, CaF2)

Basalt with Olivine (Peridot) (Basalt containing (Mg,Fe)2SiO4) — igneous

Basalt with Olivine (Peridot)

Basalt containing (Mg,Fe)2SiO4

Weathered, iron-stained quartz-rich pebble (uncertain identification) (Microcrystalline quartz, SiO₂, with iron-oxide/hydroxide staining and dark matrix inclusions) — mineral

Weathered, iron-stained quartz-rich pebble (uncertain identification)

Microcrystalline quartz, SiO₂, with iron-oxide/hydroxide staining and dark matrix inclusions

Feldspar in Matrix (Feldspar group minerals in metamorphic or igneous matrix) — igneous

Feldspar in Matrix

Feldspar group minerals in metamorphic or igneous matrix

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Sandstone (Quartzose) (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone (Quartzose)

Arenite (composed primarily of SiO2)

Sandstone (Arenite (SiO2 primarily)) — sedimentary

Sandstone

Arenite (SiO2 primarily)

Red sandstone fragment (Ferruginous sandstone, chiefly quartz (SiO₂) with iron-oxide cement) — sedimentary

Red sandstone fragment

Ferruginous sandstone, chiefly quartz (SiO₂) with iron-oxide cement

Turquoise (Turquoise (Hydrated copper aluminum phosphate, CuAl6(PO4)4(OH)8·4H2O)) — Mineral

Turquoise

Turquoise (Hydrated copper aluminum phosphate, CuAl6(PO4)4(OH)8·4H2O)

Dark mafic rock, likely basalt (Basalt (fine-grained assemblage chiefly plagioclase and pyroxene, commonly with olivine and iron oxides)) — igneous

Dark mafic rock, likely basalt

Basalt (fine-grained assemblage chiefly plagioclase and pyroxene, commonly with olivine and iron oxides)

Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Granite (Granitoid) — igneous

Granite

Granitoid

Sandstone (Arenite (typically composed of SiO2)) — sedimentary

Sandstone

Arenite (typically composed of SiO2)

Likely quartz cluster with iron staining (Quartz (SiO₂), possibly with calcite or feldspar inclusions) — mineral

Likely quartz cluster with iron staining

Quartz (SiO₂), possibly with calcite or feldspar inclusions

Quartz–feldspar pegmatite with garnet (Granitic pegmatite; chiefly quartz (SiO₂), feldspar, mica, and reddish-brown almandine garnet) — igneous

Quartz–feldspar pegmatite with garnet

Granitic pegmatite; chiefly quartz (SiO₂), feldspar, mica, and reddish-brown almandine garnet

Chalcedony (Banded/Mottled Variety) (Chalcedony (a cryptocrystalline variety of Quartz, SiO2)) — Mineral

Chalcedony (Banded/Mottled Variety)

Chalcedony (a cryptocrystalline variety of Quartz, SiO2)

Likely basalt or vesicular volcanic rock (Basalt, possibly scoriaceous basalt; exact identification is uncertain from the photograph) — igneous

Likely basalt or vesicular volcanic rock

Basalt, possibly scoriaceous basalt; exact identification is uncertain from the photograph