Tektite (Indochinite)
Tektite (High-silica natural glass)
meteorite
Category
Mineraloid (Impact Glass)
Browse mineraloid (impact glass) specimens identified by the Rock Identifier community.
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Tektite (Indochinite)
Tektite (natural glass, SiO2 + Al2O3)
mineral
Libyan Desert Glass
Impactite (High-silica tektite)
mineral
Tektite (Indochinite)
Tektite (Amorphous Silica Glass)
igneous
Libyan Desert Glass
Libyan Desert Glass (Impactite)
meteorite
Moldavite
Tektite (Silicates with aluminum, iron, manganese, and potassium oxide glass)
meteorite
Libyan Desert Glass
Impactite (vitreous silica), SiO2
mineral
Tektite (Indochinite)
Tektite (Silica-rich natural glass)
mineral
Mahogany Obsidian
Volcanic glass (high silica) with inclusions of Magnetite or Hematite
igneous
Obsidian
Volcanic glass (SiO2 + impurities)
igneous
Chert (River Pebble)
Microcrystalline Silica (SiO2)
sedimentary
Tektite
Tektite (Natural Glassy Ejecta)
mineral
Libyan Desert Glass
Libyan Desert Glass (SiO2 with trace elements)
mineral (impactite)
Tektite (Indochinite)
Tektite (High-silica impact glass)
igneous
Tektite (Indochinite)
Tektite (High-silica natural glass)
igneous
Tektite (Indochinite)
Tektite (Amorphous silica-rich impact glass)
igneous
Possible tektite or volcanic glass specimen
Natural silica glass; composition commonly near SiO₂, but exact identification requires chemical testing
mineral
Tektite (Indochinite)
Tektite (High-silica impactite glass)
meteorite
Libyan Desert Glass
Tektite (high-silica impact glass), SiO2
mineral
Quartz (River Pebble)
Silicon Dioxide (SiO2)
mineral
Chert / Quartz Pebble
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Quartzite Pebble
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Obsidian
Volcanic Glass (Amorphous silicon dioxide with impurities)
igneous
Possible tektite or dark volcanic rock fragment
Uncertain; likely natural silicate glass (tektite) or basalt
mineral
Libyan Desert Glass
Impact-melt silica glass (SiO2 + traces of Al, Fe, Ti)
mineral (Tektite/Impactite)
Tektite (Indochinite)
Tektite (Natural silica glass)
igneous
Tektite
Impactite (Natural Silicate Glass)
meteorite
Snowflake Obsidian
Spherulitic Volcanic Glass (primarily SiO2)
igneous
Moldavite
Tektite (Natural Silicate Glass)
gemstone
Moldavite
Tektite (Impact Glass), ~80% SiO2 + Al2O3
tektite
Snowflake Obsidian
Spherulitic Obsidian (Volcanic Glass with Cristobalite inclusions)
igneous
Obsidian
Volcanic Glass (SiO2 rich)
igneous
Fulgurite
Fulgurite (Lechatelierite-rich fused silica)
mineraloid / sedimentary (secondary formation)
Tektite (Indochinite)
Tektite (SiO2 + Al2O3, Glassy Melts)
igneous
Tektite (Indochinite)
Tektite (High-silica natural glass)
igneous
Tektite (Indochinite)
Tektite (Natural silica glass)
meteorite
Chert (Flint)
Chert (SiO2)
sedimentary
Obsidian
Volcanic glass (SiO2 - Silicon Dioxide with impurities)
Igneous
Obsidian
Volcanic glass (SiO2 - Silicon Dioxide with impurities)
igneous
Snowflake Obsidian
Spherulitic Obsidian (primarily SiO2 with Cristobalite inclusions)
igneous
Quartzite River Rock
Quartzite (primarily SiO2)
metamorphic
Glass
Amorphous Silicon Dioxide (SiO2)
mineraloid