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

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

Quartz (Clear Quartz)

Silicon Dioxide (SiO2)

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

Chert (Flint/Jasper)

Silicon Dioxide (SiO2)

Fluorite with Quartz (Fluorite (CaF2) and Quartz (SiO2)) — mineral

Fluorite with Quartz

Fluorite (CaF2) and Quartz (SiO2)

Quartz (Iron-stained) (Silicon Dioxide (SiO2)) — mineral

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Quartz with Mica inclusions (likely Iron-stained) (Silicon Dioxide (SiO2) with Phyllosilicates) — mineral

Quartz with Mica inclusions (likely Iron-stained)

Silicon Dioxide (SiO2) with Phyllosilicates

Citrine Quartz (Silicon Dioxide (SiO2) with trace Iron impurities) — mineral

Citrine Quartz

Silicon Dioxide (SiO2) with trace Iron impurities

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Granitic Pegmatite with Muscovite Mica (Pegmatite (containing KAl2(AlSi3O10)(OH)2)) — igneous

Granitic Pegmatite with Muscovite Mica

Pegmatite (containing KAl2(AlSi3O10)(OH)2)

Quartz (Iron-stained Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Iron-stained Quartz)

Silicon Dioxide (SiO2)

Opalite (Synthetic Glass / Man-made Opal Simulant) — gemstone

Opalite

Synthetic Glass / Man-made Opal Simulant

Potassium Feldspar (Orthoclase (KAlSi3O8)) — mineral

Potassium Feldspar

Orthoclase (KAlSi3O8)

Lepidolite (K(Li,Al)3(Al,Si,4)10(O,F,OH)2) — mineral

Lepidolite

K(Li,Al)3(Al,Si,4)10(O,F,OH)2

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

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

Quartz (Druzy)

Silicon Dioxide (SiO2)

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

Quartz (Granular)

Silicon Dioxide (SiO2)

K-Feldspar (Potassium Feldspar) (Orthoclase / Microcline (KAlSi3O8)) — mineral

K-Feldspar (Potassium Feldspar)

Orthoclase / Microcline (KAlSi3O8)

Quartz with Orthoclase Feldspar (Silicon Dioxide (SiO2) with Potassium Aluminum Silicate (KAlSi3O8)) — mineral

Quartz with Orthoclase Feldspar

Silicon Dioxide (SiO2) with Potassium Aluminum Silicate (KAlSi3O8)

Quartz in Matrix (Lepidolite or Quartzite) (Silicon Dioxide (SiO2) with host rock) — mineral

Quartz in Matrix (Lepidolite or Quartzite)

Silicon Dioxide (SiO2) with host rock

Tumbled Rose Quartz (Quartz (SiO2)) — mineral

Tumbled Rose Quartz

Quartz (SiO2)

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

Smoky Quartz

Smoky Quartz (Silicon Dioxide, SiO2)

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

Quartz / Milky Quartz

Silicon Dioxide (SiO2)

Snowflake Obsidian (Volcanic Glass with Cristobalite Inclusions) — igneous

Snowflake Obsidian

Volcanic Glass with Cristobalite Inclusions

Obsidian (Obsidian (Volcanic Glass, SiO2)) — igneous

Obsidian

Obsidian (Volcanic Glass, SiO2)

Muscovite (Mica) in Quartz Matrix (Muscovite (KAl2(AlSi3O10)(OH)2) and Quartz (SiO2)) — mineral

Muscovite (Mica) in Quartz Matrix

Muscovite (KAl2(AlSi3O10)(OH)2) and Quartz (SiO2)

Quartz on Schist (Silicon Dioxide (SiO2) on Foliated Metamorphic Rock) — metamorphic

Quartz on Schist

Silicon Dioxide (SiO2) on Foliated Metamorphic Rock

Muscovite Mica (Muscovite (Potassium Aluminum Silicate Hydroxide Fluoride), KAl2(AlSi3O10)(OH,F)2) — mineral

Muscovite Mica

Muscovite (Potassium Aluminum Silicate Hydroxide Fluoride), KAl2(AlSi3O10)(OH,F)2

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Black Obsidian (Volcanic Glass (SiO2)) — igneous

Black Obsidian

Volcanic Glass (SiO2)

Quartz Geode (with possible Manganese or Goethite coating) (Silicon Dioxide (SiO2)) — mineral

Quartz Geode (with possible Manganese or Goethite coating)

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

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

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

Snowflake Obsidian (Volcanic Glass (felsic volcanic glass with cristobalite inclusions)) — igneous

Snowflake Obsidian

Volcanic Glass (felsic volcanic glass with cristobalite inclusions)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Mixed Mineral and Fossil Collection (Multi-specimen assemblage (SiO2, CaCO3, FeS2, etc.)) — mineral

Mixed Mineral and Fossil Collection

Multi-specimen assemblage (SiO2, CaCO3, FeS2, etc.)

Snowflake Obsidian (Volcanic Glass (spherulitic obsidian)) — igneous

Snowflake Obsidian

Volcanic Glass (spherulitic obsidian)

Obsidian (Volcanic Glass (Amorphous silicon dioxide with impurities)) — igneous

Obsidian

Volcanic Glass (Amorphous silicon dioxide with impurities)

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

Quartz with Inclusions

Silicon Dioxide (SiO2)

Milky quartz with iron-oxide staining (Quartz, silicon dioxide (SiO₂), likely massive or coarsely crystalline; brown areas are limonite/goethite staining) — mineral

Milky quartz with iron-oxide staining

Quartz, silicon dioxide (SiO₂), likely massive or coarsely crystalline; brown areas are limonite/goethite staining

Quartz Mineral (Silicon Dioxide (SiO2)) — mineral

Quartz Mineral

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)