Rock Identifier

Category

Mineral And Glass

Browse mineral and glass specimens identified by the Rock Identifier community.

Learn about Mineral And Glass in the encyclopedia

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Sideromelane

Sideromelane

Black Obsidian

Black Obsidian

Maskelynite

Maskelynite

Tachylite

Tachylite

Obsidian

Obsidian

Hyalite Opal

Hyalite Opal

Perlite

Perlite

Opalite

Opalite

Macusanite

Pink Obsidian

Goldstone

Goldstone

Glauconite

Glauconite

Orange Quartz (Silicon Dioxide (SiO2) with iron oxide inclusions) — mineral

Orange Quartz

Silicon Dioxide (SiO2) with iron oxide inclusions

mineral
Quartz (Yellow/Iron-stained Quartzite or Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Quartz (Yellow/Iron-stained Quartzite or Chalcedony)

Silicon Dioxide (SiO2)

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

Milky Quartz Pebble

Silicon Dioxide (SiO2)

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

Milky Quartz

Silicon Dioxide (SiO2)

mineral
Milky Quartz with Mineral Inclusions (Quartz (Silicon Dioxide - SiO2)) — mineral

Milky Quartz with Mineral Inclusions

Quartz (Silicon Dioxide - SiO2)

mineral
Citrine (Heat-treated Amethyst) (Citrine Quartz (SiO2)) — Mineral (Tectosilicate)

Citrine (Heat-treated Amethyst)

Citrine Quartz (SiO2)

Mineral (Tectosilicate)
Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

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

Milky Quartz

Silicon Dioxide (SiO2)

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

Milky Quartz

Silicon Dioxide (SiO2)

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

Milky Quartz

Silicon Dioxide (SiO2)

mineral
Quartz (Smoky Quartz variant) (Silicon Dioxide (SiO2)) — mineral

Quartz (Smoky Quartz variant)

Silicon Dioxide (SiO2)

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

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

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

Quartz Pebble

Silicon Dioxide (SiO2)

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

Quartz (Milky or Rough Quartz)

Silicon Dioxide (SiO2)

mineral
Pink Quartzite (Quartzite (SiO2)) — metamorphic

Pink Quartzite

Quartzite (SiO2)

metamorphic
Jasper (Jasper (Silicate mineral, SiO2)) — sedimentary

Jasper

Jasper (Silicate mineral, SiO2)

sedimentary
Obsidian (Volcanic Glass (felsic composition)) — igneous

Obsidian

Volcanic Glass (felsic composition)

igneous
Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

mineral
Amethyst Quartz Pebble (Silicon Dioxide (SiO2) with iron impurities) — mineral

Amethyst Quartz Pebble

Silicon Dioxide (SiO2) with iron impurities

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

Strawberry Quartz (Hematoid Quartz)

Silicon Dioxide with Iron Oxide inclusions (SiO2 + Fe2O3)

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

River Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

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

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

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

Milky Quartz with Iron Inclusions

Silicon Dioxide (SiO2)

mineral
Quartzite (Quartzite (Primary mineral: SiO2)) — metamorphic

Quartzite

Quartzite (Primary mineral: SiO2)

metamorphic
Quartz–feldspar–mica metamorphic rock, likely gneiss (Gneiss; composition commonly quartz (SiO₂), feldspars, biotite/hornblende, and minor accessory minerals) — metamorphic

Quartz–feldspar–mica metamorphic rock, likely gneiss

Gneiss; composition commonly quartz (SiO₂), feldspars, biotite/hornblende, and minor accessory minerals

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

Quartz (River Pebble)

Silicon Dioxide (SiO2)

mineral
Quartz (likely Rose Quartz or Milky Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (likely Rose Quartz or Milky Quartz)

Silicon Dioxide (SiO2)

mineral
Opalite (Synthetic Glass (Hydrated Silica Simulant)) — mineral

Opalite

Synthetic Glass (Hydrated Silica Simulant)

mineral
Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

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

Quartz Pebble

Silicon Dioxide (SiO2)

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

Quartz (Grain)

Silicon Dioxide (SiO2)

mineral
Quartz (Milky/Granular) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/Granular)

Silicon Dioxide (SiO2)

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

Quartz / Milky Quartz

Silicon Dioxide (SiO2)

mineral
Red Sandstone (Arenite) — sedimentary

Red Sandstone

Arenite

sedimentary
Yellow Quartz (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz

Silicon Dioxide (SiO2)

mineral
Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

mineral
Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

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

Milky Quartz

Silicon Dioxide (SiO2)

mineral
Sandstone (Arenite (SiO2 principal component)) — sedimentary

Sandstone

Arenite (SiO2 principal component)

sedimentary
Milky Quartz Pebble (Crystalline Silicon Dioxide (SiO2)) — mineral

Milky Quartz Pebble

Crystalline Silicon Dioxide (SiO2)

mineral
Green Fluorite (Fluorite (Calcium Fluoride, CaF2)) — mineral

Green Fluorite

Fluorite (Calcium Fluoride, CaF2)

mineral
Milky Quartz Geode with Chlorite (Silicon Dioxide (SiO2) with Chlorite group inclusions) — mineral

Milky Quartz Geode with Chlorite

Silicon Dioxide (SiO2) with Chlorite group inclusions

mineral