Basalt (Water-worn Pebble)
Basalt (Aphanitic Mafic Igneous Rock)
igneous
Category
Mineraloid (Man Made Origin)
Browse mineraloid (man made origin) specimens identified by the Rock Identifier community.
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Yellow Quartzite (River Pebble)
Quartzite (mainly SiO2)
metamorphic
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Quartzite Pebble
Quartzite (primarily SiO2)
metamorphic
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Marble
Metamorphosed Limestone (mainly CaCO3)
metamorphic
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
sedimentary
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with iron inclusions)
metamorphic
Schist
Mica Schist
metamorphic
Geodude
Geodude (Rock Pokémon: No. 74)
igneous
Quartzite with Iron Inclusions
Metamorphic Silicon Dioxide (SiO2) with impure Limonite/Hematite
metamorphic
Marble
Recrystallized Calcite (CaCO3) or Dolomite (CaMg(CO3)2)
metamorphic
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
sedimentary
Marble
Recrystallized Calcite (CaCO3)
metamorphic
Quartz (Milky/Snow)
Silicon Dioxide (SiO2)
mineral
Eagle Eye / Grey Tiger Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
mineral
Pebble (likely Sandstone or Granitic Pebble)
Clastic Sediment (or specific rock type, e.g., Arenite, Granitoid Pebble)
Rock (likely Sedimentary)
Chert (River Pebble)
Microcrystalline Quartz (SiO2)
sedimentary
Red Quartzite / Metasandstone River Pebble
Quartzite (primarily SiO2 with hematite inclusions)
metamorphic
Blue Lace Agate
Cryptocrystalline Quartz (SiO2)
mineral
Quartzite Pebble
Quartzite (primarily SiO2)
metamorphic
Quartzite Pebble
Metamorphic Quartzite (primarily SiO2)
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Obsidian (Apache Tear)
Volcanic Glass (composed mainly of SiO2)
igneous
Petrified Wood
Silicified wood (primarily Silicon Dioxide, SiO2)
metamorphic
Tiger's Eye (Gold/Brown variety)
Silicon dioxide (SiO2) with fibrous crocidolite inclusions
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Pink Quartzite
Quartzite (primarily SiO2)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Concretion in Shale
Siltstone/Shale with Siderite or Calcareous concretions
sedimentary
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Basalt River Pebble
Aphanitic Mafic Igneous Rock
igneous
Orange Quartz (Citrine Quartz variety)
Silicon Dioxide (SiO2)
mineral
Vesicular Basalt (or Scoraceous Basalt)
Basalt with vesicular texture
igneous
Quartzite with inclusions
Metamorphic Quartzite (SiO2 with accessory minerals)
metamorphic
Quartzite
Quartzite (consisting primarily of SiO2)
metamorphic
Basalt with Epidote
Mafic volcanic rock with Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
igneous
Quartzite
Quartzite (primarily SiO2)
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Vesicular Basalt
Basalt with vesicular texture
igneous
Cubic Zirconia (CZ)
Zirconium dioxide (ZrO2)
mineral