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

Sideromelane

Black Obsidian

Maskelynite

Tachylite

Obsidian

Hyalite Opal

Perlite

Opalite

Macusanite

Pink Obsidian

Goldstone

Glauconite

Blue Quartz (Aventurine) (Silicon Dioxide (SiO2) with fibrous inclusions (commonly Dumortierite)) — mineral

Blue Quartz (Aventurine)

Silicon Dioxide (SiO2) with fibrous inclusions (commonly Dumortierite)

Iron-Stained Quartz (Riverside Cobble) (Silicon Dioxide (SiO2) with Limonite/Hematite inclusions) — mineral

Iron-Stained Quartz (Riverside Cobble)

Silicon Dioxide (SiO2) with Limonite/Hematite inclusions

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

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

Quartz

Quartz (Silicon Dioxide, SiO2)

Apatite (Fluorapatite (Ca5(PO4)3F)) — mineral

Apatite

Fluorapatite (Ca5(PO4)3F)

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

Unidentified translucent mineral fragment, possibly calcite (Calcite (calcium carbonate, CaCO₃), tentative identification) — mineral

Unidentified translucent mineral fragment, possibly calcite

Calcite (calcium carbonate, CaCO₃), tentative identification

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Pink/Rose Quartz or Quartz Crystal) (Silicon Dioxide (SiO2)) — mineral

Quartz (Pink/Rose Quartz or Quartz Crystal)

Silicon Dioxide (SiO2)

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

Quartz Crystal Point

Silicon Dioxide (SiO2)

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

Quartz (Milky/Crystalline variety)

Silicon Dioxide (SiO2)

Potassium Feldspar (Orthoclase) (KAlSi3O8) — mineral

Potassium Feldspar (Orthoclase)

KAlSi3O8

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

White Quartz Pebble (with possible Quartz Geode cavity) (Silicon Dioxide (SiO2)) — mineral

White Quartz Pebble (with possible Quartz Geode cavity)

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Quartzite (Hydrothermal Quartz or Quartzite (SiO2)) — metamorphic

Quartzite

Hydrothermal Quartz or Quartzite (SiO2)

Sandstone (Quartzose) (Arenite (SiO2 based)) — sedimentary

Sandstone (Quartzose)

Arenite (SiO2 based)

Sandstone (with Iron Staining) (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily SiO2)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

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

Jasper

Jasper (Silicon Dioxide, SiO2)

Likely weathered quartz-rich stone (Probably quartz-bearing sandstone or milky quartz; exact identification requires testing) — mineral

Likely weathered quartz-rich stone

Probably quartz-bearing sandstone or milky quartz; exact identification requires testing

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Green cabochon gemstone pendant, likely turquoise or dyed green turquoise (Probably turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O; exact identification requires testing) — gemstone

Green cabochon gemstone pendant, likely turquoise or dyed green turquoise

Probably turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O; exact identification requires testing

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

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

Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

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

Blue Apatite

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

Quartz pebble (Silicon Dioxide (SiO2)) — mineral

Quartz pebble

Silicon Dioxide (SiO2)

Yellow Quartz (Citrine or Yellow Jasper) (Silicon Dioxide (SiO2) with iron impurities) — mineral

Yellow Quartz (Citrine or Yellow Jasper)

Silicon Dioxide (SiO2) with iron impurities

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

Milky Quartz with inclusions

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Sandstone (with Iron Staining) (Clastic sedimentary rock (primarily Quartz with Hematite/Limonite oxides)) — sedimentary

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily Quartz with Hematite/Limonite oxides)

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

Milky Quartz with Iron Inclusions

Crystalline Silicon Dioxide (SiO2)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Zirconia (Ceramic) & Ion-X Glass (Zirconium Dioxide (ZrO2) and Ion-strengthened Aluminosilicate Glass) — Synthetic Mineral / Glass

Zirconia (Ceramic) & Ion-X Glass

Zirconium Dioxide (ZrO2) and Ion-strengthened Aluminosilicate Glass

Synthetic Mineral / Glass

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Obsidian (Volcanic Glass (Primary composition: SiO2 - Silicon Dioxide)) — Igneous

Obsidian

Volcanic Glass (Primary composition: SiO2 - Silicon Dioxide)

Sandstone (Ferruginous) (Arenite (with Iron Oxides)) — sedimentary

Sandstone (Ferruginous)

Arenite (with Iron Oxides)

Quartz Pebble (Silicon dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon dioxide (SiO2)

Chert (Jasper variety) (Silicon dioxide (SiO2)) — sedimentary

Chert (Jasper variety)

Silicon dioxide (SiO2)

Green Aventurine (Quartzite with Fuchsite inclusions (SiO2 with K(Al,Cr)2AlSi3O10(OH)2)) — metamorphic

Green Aventurine

Quartzite with Fuchsite inclusions (SiO2 with K(Al,Cr)2AlSi3O10(OH)2)

Snowflake Obsidian (Obsidian with Cristobalite inclusions (Amorphous SiO2 + SiO2 inclusions)) — igneous

Snowflake Obsidian

Obsidian with Cristobalite inclusions (Amorphous SiO2 + SiO2 inclusions)