Rock Identifier

Category

Organic (Non Rock)

Browse organic (non rock) specimens identified by the Rock Identifier community.

Green Aventurine (Quartz with Fuchsine inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)) — mineral

Green Aventurine

Quartz with Fuchsine inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Quartzite (Metamorphosed Quartz Sandstone (SiO2)) — metamorphic

Quartzite

Metamorphosed Quartz Sandstone (SiO2)

Amethyst Geode (Silicon Dioxide (SiO2) with iron impurities) — mineral

Amethyst Geode

Silicon Dioxide (SiO2) with iron impurities

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

Quartz (Small fragments)

Silicon Dioxide (SiO2)

Sandstone (likely Red/Brown Sandstone) (Arenite (SiO2 based)) — sedimentary

Sandstone (likely Red/Brown Sandstone)

Arenite (SiO2 based)

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

Carnelian (Carnelian Agate)

Silicon dioxide (SiO2) - a variety of Chalcedony

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Smoky Quartz (SiO2 (Silicon Dioxide with aluminum impurities)) — mineral

Smoky Quartz

SiO2 (Silicon Dioxide with aluminum impurities)

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

Quartz (Tumbled)

Silicon Dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Pink Chalcedony (Silicon Dioxide (SiO2)) — mineral

Pink Chalcedony

Silicon Dioxide (SiO2)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Grey Chalcedony (Agate) (Silicon Dioxide (SiO2)) — mineral

Grey Chalcedony (Agate)

Silicon Dioxide (SiO2)

Aventurine Quartz (Silicon Dioxide (SiO2) with inclusions of Fuchsite mica) — mineral

Aventurine Quartz

Silicon Dioxide (SiO2) with inclusions of Fuchsite mica

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Rose Quartz (Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese) — mineral

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Basalt (Basalt (Mainly Plagioclase Feldspar and Pyroxene)) — igneous

Basalt

Basalt (Mainly Plagioclase Feldspar and Pyroxene)

Grey Jasper (Tumbled Quartz variant) (Jasper (Silicon Dioxide, SiO2)) — sedimentary

Grey Jasper (Tumbled Quartz variant)

Jasper (Silicon Dioxide, SiO2)

Citrine Quartz (Silicon Dioxide (SiO2)) — mineral

Citrine Quartz

Silicon Dioxide (SiO2)

Quartz (Citrine or Iron-Stained) (Silicon Dioxide (SiO2)) — mineral

Quartz (Citrine or Iron-Stained)

Silicon Dioxide (SiO2)

Rose Quartz (Silicon Dioxide (SiO2) with traces of Titanium, Iron, or Manganese) — mineral

Rose Quartz

Silicon Dioxide (SiO2) with traces of Titanium, Iron, or Manganese

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Vesicular Basalt (Basalt with vesicular texture) — igneous

Vesicular Basalt

Basalt with vesicular texture

Quartzite (or Ferruginous Quartz) (Silicon Dioxide (SiO2) with Iron Oxide inclusions) — metamorphic

Quartzite (or Ferruginous Quartz)

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Serpentine (Serpentinite) (Antigorite, Lizardite, or Chrysotile; (Mg,Fe)3Si2O5(OH)4) — metamorphic

Serpentine (Serpentinite)

Antigorite, Lizardite, or Chrysotile; (Mg,Fe)3Si2O5(OH)4

Quartz Druze (Silicon Dioxide (SiO2)) — mineral

Quartz Druze

Silicon Dioxide (SiO2)

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

Quartz Geode

Quartz (Silicon Dioxide, SiO2)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

River Pebble (Likely Quartzite or Chert) (Silicon Dioxide (SiO2)) — metamorphic or sedimentary

River Pebble (Likely Quartzite or Chert)

Silicon Dioxide (SiO2)

metamorphic or sedimentary

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

Sandstone (likely Quartzose Sandstone)

Arenite (composed primarily of SiO2)

Sandstone (Arenite (SiO2 primarily)) — sedimentary

Sandstone

Arenite (SiO2 primarily)

Quartzite pebble (Quartzite (primarily SiO2)) — metamorphic

Quartzite pebble

Quartzite (primarily SiO2)

Granite (Granite) — igneous

Granite

Granite

Yellow Quartzite (River Pebble) (Silicon Dioxide (SiO2) with iron oxide inclusions) — metamorphic

Yellow Quartzite (River Pebble)

Silicon Dioxide (SiO2) with iron oxide inclusions

Basalt (Extrusive Mafic Igneous Rock) — igneous

Basalt

Extrusive Mafic Igneous Rock

Mudstone (Lutylite (group of fine-grained sedimentary rocks)) — sedimentary

Mudstone

Lutylite (group of fine-grained sedimentary rocks)

Sandstone (likely Calcareous or Micaceous) (Clastic sedimentary rock (primarily Quartz with Cementing Agents)) — sedimentary

Sandstone (likely Calcareous or Micaceous)

Clastic sedimentary rock (primarily Quartz with Cementing Agents)

Quartz Geode (Silicon Dioxide (SiO2) within a geode) — sedimentary

Quartz Geode

Silicon Dioxide (SiO2) within a geode

Basalt (Extrusive Mafic Igneous Rock (composed primarily of plagioclase feldspar and pyroxene)) — igneous

Basalt

Extrusive Mafic Igneous Rock (composed primarily of plagioclase feldspar and pyroxene)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)