Quartzite pebble
Quartzite (SiO2)
metamorphic
Category
Antropogenic (Man Made Glass Byproduct)
Browse antropogenic (man made glass byproduct) specimens identified by the Rock Identifier community.
Sandstone (with potential trace fossils)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Vesicular Basalt (commonly mistaken for Slag)
Scoriaceous Basalt (composed primarily of Plagioclase Feldspar and Pyroxene)
igneous
Agate (Bead Form)
Agate (Cryptocrystalline Quartz, SiO2)
mineral
Pink Quartzite
Quartzite (primarily SiO2)
metamorphic
Rose Quartz
SiO2 (Silicon Dioxide)
mineral
Granite (Weathered)
Phaneritic Felsic Igneous Rock
Igneous
Obsidian
Volcanic glass (SiO2 - Silicon Dioxide with impurities)
Igneous
Green Fluorite
Fluorite (Calcium Fluoride) - CaF2
mineral
Green Fluorite
Fluorite (Calcium Fluoride - CaF2)
mineral
Olivine (Peridot)
Magnesium Iron Silicate (Mg, Fe)2SiO4
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Chert (Yellow Jasper variant)
Microcrystalline Quartz (SiO2)
sedimentary
Rose Quartz with Schist Matrix
Silicon Dioxide (SiO2) with Mica-Schist
mineral
Chert (Nodular Chert)
Microcrystalline or Cryptocrystalline Silicon Dioxide (SiO2)
sedimentary
Citrine Quartz Sphere
Silicon Dioxide (SiO2)
mineral
Rose Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
White Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Peridot
Olivine ((Mg, Fe)2SiO4)
mineral
Olivine (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4
Mineral
Black Onyx
Silicon Dioxide (SiO2)
mineral
Rough Quartz (likely Milky or Smoky Quartz)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartzite
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
mineral
Quartzite
Quartzite (primarily SiO2)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Chert (Jasper)
Silicon Dioxide (SiO2)
sedimentary
Amber
Succinite (approximate formula C10H16O)
mineraloid
Jasper and Chert Conglomerate
Ferruginous Microcrystalline Quartz (SiO2)
sedimentary
Chalcedony (River Stone)
Silicon Dioxide (SiO2)
mineral
Granite
Granite (a plutonic igneous rock composed of quartz, feldspar, and mica)
igneous
Sandstone (Quartzite Pebble)
Arenite / Metamorphosed Sandstone (SiO2)
sedimentary
Quartzite (Gold/Yellow)
Quartzite (SiO2)
metamorphic
Quartzite
Quartzite (Primary mineral: SiO2)
metamorphic
Chert / Flint
Silicon Dioxide (SiO2)
sedimentary
Quartzite Pebble
Metamorphic Quartz (SiO2)
metamorphic