Banded Chert
Microcrystalline Quartz (SiO2)
sedimentary
Category
Mineraloid (Man Made Glass)
Browse mineraloid (man made glass) specimens identified by the Rock Identifier community.
Learn about Mineraloid (Man Made Glass) in the encyclopedia
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Quartzite
Metamorphic Quartzite (SiO2)
metamorphic
Goldstone (Red)
Aventurine Glass
Man-made material (Simulated Mineral)
Sandstone
Arenite (primarily SiO2)
sedimentary
Diamond
Carbon (C)
gemstone
Chert (specifically Flint or Nodular Chert)
Silicon dioxide (SiO2)
sedimentary
Chert Arrowhead
Chert (Cryptocrystalline variety of Quartz, SiO2)
sedimentary
Red Sandstone
Clastic Sedimentary Mineraloid (predominantly Quartz grains with Iron Oxide cement)
sedimentary
Sea Glass (Uranium/Vaseline Glass variant)
Silicon Dioxide (SiO2) with trace Uranium Oxide (U3O8)
man-made silicate (anthropogenic glass)
Quartzite
Metamorphic Quartzite (SiO2)
metamorphic
Red Quartzite
Quartzite (SiO2)
metamorphic
Limonite (Iron Ore)
Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)
mineral
Limonite (Iron Ore)
FeO(OH)·nH2O (Hydrated iron(III) oxide-hydroxide)
mineral
Tektite (Indochinite)
Tektite (Amorphous Silica Glass)
igneous
Snowflake Obsidian (Flower Jasper variant)
Vitreous volcanic silicate with cristobalite inclusions
igneous
Limonite (Ironstone Concretion)
Limonite (Hydrated iron(III) oxide-hydroxide, mixtures of FeO(OH)·nH2O)
sedimentary
Limonite (with Pyrite)
Limonite (Hydrated Iron Oxide) - FeO(OH)·nH2O
mineral
Slag (Industrial Glass)
Artificial Vitreous Silicate
mineraloid (anthropogenic)
Chert (often called Flint)
Chert (Cryptocrystalline Quartz, SiO2)
sedimentary
Sandstone
Sedimentary Rock (Quartz Sandstone)
sedimentary
Chert (Flint)
Silicon Dioxide (SiO2)
sedimentary
Chert (Flint)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Chert (varietal Chalcedony or Flint)
Silicon dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Sea Glass (Kelly Green)
Amorphous Silica (Silicon Dioxide with Iron/Chromium additives)
Anthropogenic specimen (Man-made material)
Libyan Desert Glass
Tektite (high-silica impact glass), SiO2 + tracing minerals
mineraloid / impactite
Chert (Yellow Jasper/Flint pebble)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Flinty variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Diamond (in Jewelry Setting)
Carbon (C)
gemstone
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Amber
Succinate (Succinite for Baltic varieties)
Organic Mineraloid
Chert / Flint
Microcrystalline Quartz (SiO2)
sedimentary
Chert (with Limestone matrix)
Silicon dioxide (SiO2)
sedimentary
Granite
Felsic intrusive igneous rock
igneous
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Red Jasper
Silicon Dioxide (SiO2) with Hematite (Fe2O3)
sedimentary
Amber
Succinite (fossilized resin)
Organic Mineraloid
Goldstone (blue-goldstone–style glass) beads
Artificial aventurine glass, typically silica glass with copper inclusions; not a natural mineral
mineral
Sandstone (Quartz Arenite)
Sandstone (dominated by SiO2 quartz grains)
sedimentary
Sandstone (Pebble)
Sandstone (SiO2 with matrix/cement)
sedimentary
Sandstone
Arenite (variable SiO2 composition)
sedimentary
Corundum (Sapphire variant)
Aluminium oxide (Al2O3)
mineral
Banded Chert (River Stone)
Silicon Dioxide (SiO2)
sedimentary