Rock Identifier

Category

Organic (Non Geological)

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

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

mineral
Milky Quartz in Siltstone or Feldspar (Silicon Dioxide (SiO2)) — mineral

Milky Quartz in Siltstone or Feldspar

Silicon Dioxide (SiO2)

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

Milky Quartz Pebble

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

mineral
Flesh-colored Quartz Mineral (SiO2 (Silicon Dioxide) with Iron Impurities) — mineral

Flesh-colored Quartz Mineral

SiO2 (Silicon Dioxide) with Iron Impurities

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

Sandstone

Arenite (composed primarily of SiO2)

sedimentary
Quartz Geode with Chalcedony (Silicon Dioxide (SiO2) in Geode Form) — sedimentary

Quartz Geode with Chalcedony

Silicon Dioxide (SiO2) in Geode Form

sedimentary
Sandstone (Arenite) — sedimentary

Sandstone

Arenite

sedimentary
Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

mineral
Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

metamorphic
Carnelian (Carnelian (Chalcedony/Quartz, SiO2)) — mineral

Carnelian

Carnelian (Chalcedony/Quartz, SiO2)

mineral
Granite (Granite (Phaneritic Igneous Rock)) — igneous

Granite

Granite (Phaneritic Igneous Rock)

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

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

mineral
Yellow Quartzite (Quartzite (SiO2)) — metamorphic

Yellow Quartzite

Quartzite (SiO2)

metamorphic
Basalt (Extrusive mafic igneous rock) — igneous

Basalt

Extrusive mafic igneous rock

igneous
Cullet Glass (Slag Glass) (Amorphous Silicon Dioxide (Industrial Byproduct)) — mineraloid

Cullet Glass (Slag Glass)

Amorphous Silicon Dioxide (Industrial Byproduct)

mineraloid
Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

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

Clear Quartz

Silicon Dioxide (SiO2)

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

Quartz (Small Fragment)

Silicon Dioxide (SiO2)

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

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

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

Quartz (Small Fragment)

Silicon Dioxide (SiO2)

mineral
Yellow Jasper (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

sedimentary
Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

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

Clear Quartz (Tumbled)

Silicon Dioxide (SiO2)

mineral
Chromium (Chrome) (Chromium (Cr)) — mineral

Chromium (Chrome)

Chromium (Cr)

mineral
Concretion (Calcareous or ferruginous concretion) — sedimentary

Concretion

Calcareous or ferruginous concretion

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

Quartz Geode

Silicon Dioxide (SiO2)

mineral
Concretion (Septarian Concretion) — sedimentary

Concretion

Septarian Concretion

sedimentary
Fossilized Rugose Coral (Petoskey Stone precursor) (Hexagonaria percarinata (Fossilized Rugose Coral)) — sedimentary

Fossilized Rugose Coral (Petoskey Stone precursor)

Hexagonaria percarinata (Fossilized Rugose Coral)

sedimentary
Granite (Granite (composed primarily of Quartz SiO2, Alkali Feldspar KAlSi3O8, and Plagioclase Feldspar)) — igneous

Granite

Granite (composed primarily of Quartz SiO2, Alkali Feldspar KAlSi3O8, and Plagioclase Feldspar)

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

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

mineral
Agate (specifically Waterline or Onyx-type Agate) (Silicon Dioxide (SiO2) - variety Chalcedony) — mineral

Agate (specifically Waterline or Onyx-type Agate)

Silicon Dioxide (SiO2) - variety Chalcedony

mineral
River Pebble (Quartzite/Chert) (Quartzite with inclusions (SiO2)) — metamorphic

River Pebble (Quartzite/Chert)

Quartzite with inclusions (SiO2)

metamorphic
Banded Iron Formation (Fragment) (Banded Iron Formation (BIF)) — sedimentary

Banded Iron Formation (Fragment)

Banded Iron Formation (BIF)

sedimentary
Quartz with Inclusions (Silicon Dioxide (SiO2)) — mineral

Quartz with Inclusions

Silicon Dioxide (SiO2)

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

Quartz Pebble

Silicon Dioxide (SiO2)

mineral
Quartz (Druzy) on Matrix (Silicon Dioxide (SiO2)) — mineral

Quartz (Druzy) on Matrix

Silicon Dioxide (SiO2)

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

Milky Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

mineral