Rock Identifier

Category

Mineralogical Specimen

Browse mineralogical specimen specimens identified by the Rock Identifier community.

Learn about Mineralogical Specimen in the encyclopedia

Emerald in Matrix

Emerald in Matrix

Morganite Crystal

Morganite Crystal

Aquamarine Matrix

Aquamarine Matrix

Emerald Crystal

Emerald Crystal

Aquamarine Crystal

Aquamarine Crystal

Mushroom Tourmaline

Mushroom Tourmaline

White Beryl

Smoky Quartz

Clear Obsidian

Goshenite Crystal

Goshenite Crystal

Magnetite

Crocoite

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Sandstone (Quartzite texture) (Arenite (SiO2 secondary)) — sedimentary

Sandstone (Quartzite texture)

Arenite (SiO2 secondary)

Sedimentary Breccia (Breccia (Clastic Sedimentary Rock)) — sedimentary

Sedimentary Breccia

Breccia (Clastic Sedimentary Rock)

Amethyst on Basalt (Silicon dioxide (SiO2) with trace Iron) — mineral

Amethyst on Basalt

Silicon dioxide (SiO2) with trace Iron

Milky quartz-rich rock (Quartz (SiO₂), likely massive milky quartz with minor iron-stained gangue) — mineral

Milky quartz-rich rock

Quartz (SiO₂), likely massive milky quartz with minor iron-stained gangue

Quartz on Host Rock (Silicon Dioxide (SiO2)) — mineral

Quartz on Host Rock

Silicon Dioxide (SiO2)

Quartz (Smoky/Grey variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Smoky/Grey variety)

Silicon Dioxide (SiO2)

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

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

Quartz (Bull Quartz)

Silicon Dioxide (SiO2)

Granitoid (Common Granite/Gneiss) (Granitoid (primarily Quartz [SiO2], Feldspar [KAlSi3O8], and Mica)) — igneous

Granitoid (Common Granite/Gneiss)

Granitoid (primarily Quartz [SiO2], Feldspar [KAlSi3O8], and Mica)

Fossil Assortment and Geological Specimens (Various (including Ammonoidea)) — fossil

Fossil Assortment and Geological Specimens

Various (including Ammonoidea)

Blue Obsidian (Cullet Glass) (Silicon Dioxide (Amorphous Glass)) — mineral

Blue Obsidian (Cullet Glass)

Silicon Dioxide (Amorphous Glass)

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

Botryoidal Chalcedony (Agate)

Silicon Dioxide (SiO2)

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

River Pebble (Likely Quartzite or Chalcedony) (Silicon Dioxide (SiO2) - granular metamorphic variety) — metamorphic

River Pebble (Likely Quartzite or Chalcedony)

Silicon Dioxide (SiO2) - granular metamorphic variety

Portable Ceramic Space Heater (Polished Acrylonitrile Butadiene Styrene (ABS) Plastic with Ceramic Heating Elements) — not a rock (synthetic/industrial object)

Portable Ceramic Space Heater

Polished Acrylonitrile Butadiene Styrene (ABS) Plastic with Ceramic Heating Elements

not a rock (synthetic/industrial object)

Bivalve Fossil (Shell-bearing Sedimentary Rock) (Class Bivalvia (Phylum Mollusca) within a Calcarenite/Sandstone matrix) — fossil

Bivalve Fossil (Shell-bearing Sedimentary Rock)

Class Bivalvia (Phylum Mollusca) within a Calcarenite/Sandstone matrix

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

Clear Quartz Crystal Cluster

Silicon Dioxide (SiO2)

Chert / Jasper (Silicon Dioxide (SiO2)) — sedimentary

Chert / Jasper

Silicon Dioxide (SiO2)

Quartz on Sandstone (Silicon Dioxide (SiO2) in Lithic Sandstone) — sedimentary

Quartz on Sandstone

Silicon Dioxide (SiO2) in Lithic Sandstone

Granite Pebble (Granite) — igneous

Granite Pebble

Granite

Mixed Rock and Mineral Collection (Various geological specimens) — igneous, sedimentary, and metamorphic

Mixed Rock and Mineral Collection

Various geological specimens

igneous, sedimentary, and metamorphic

Red Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Red Jasper

Microcrystalline Quartz (SiO2)

Quartz with Tourmaline and Iron Staining (Silicon Dioxide (SiO2) with accessory tourmaline and limonite) — mineral

Quartz with Tourmaline and Iron Staining

Silicon Dioxide (SiO2) with accessory tourmaline and limonite

Jasper (Silicon Dioxide (Microcrystalline Quartz, SiO2)) — sedimentary

Jasper

Silicon Dioxide (Microcrystalline Quartz, SiO2)

Iron Meteorite / Chondrite (Possible) (Extraterrestrial stony-iron or chondritic meteorite) — meteorite

Iron Meteorite / Chondrite (Possible)

Extraterrestrial stony-iron or chondritic meteorite

Agate (Silicon Dioxide (Chalcedony variety), SiO2) — gemstone

Agate

Silicon Dioxide (Chalcedony variety), SiO2

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Geode / Fossilized Gastropod or Shell Cast (Silicon dioxide (Quartz) replacement / fossil mold) — sedimentary

Geode / Fossilized Gastropod or Shell Cast

Silicon dioxide (Quartz) replacement / fossil mold

Brecciated Red Jasper (Microcrystalline Quartz (Chalcedony), SiO2) — sedimentary

Brecciated Red Jasper

Microcrystalline Quartz (Chalcedony), SiO2

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Raw Citrine Quartz (Silicon Dioxide (SiO2)) — mineral

Raw Citrine Quartz

Silicon Dioxide (SiO2)

Yellow Quartz (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz

Silicon Dioxide (SiO2)

Red Jasper (Microcrystalline Quartz (Chalcedony), SiO2) — sedimentary

Red Jasper

Microcrystalline Quartz (Chalcedony), SiO2

Jasper (Silicon Dioxide (SiO2) microcrystalline quartz) — sedimentary

Jasper

Silicon Dioxide (SiO2) microcrystalline quartz

Copper Ore (Malachite and Limonite bearing rock) (Copper-bearing rock with secondary copper minerals) — mineral

Copper Ore (Malachite and Limonite bearing rock)

Copper-bearing rock with secondary copper minerals

Quartz Crystal Cluster (Silicon Dioxide (SiO2)) — mineral

Quartz Crystal Cluster

Silicon Dioxide (SiO2)

Green Jasper Pebble (Microcrystalline Quartz (Chalcedony), SiO2) — sedimentary

Green Jasper Pebble

Microcrystalline Quartz (Chalcedony), SiO2

Jasper (Silicon dioxide (SiO2) with impurities, microcrystalline quartz) — sedimentary

Jasper

Silicon dioxide (SiO2) with impurities, microcrystalline quartz

Bismuthinite with Chalcopyrite and Quartz (Bismuthinite (Bi2S3) and Chalcopyrite (CuFeS2)) — mineral

Bismuthinite with Chalcopyrite and Quartz

Bismuthinite (Bi2S3) and Chalcopyrite (CuFeS2)

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Common Opal (Hydrated amorphous silica (SiO2·nH2O)) — mineral

Common Opal

Hydrated amorphous silica (SiO2·nH2O)