Sandstone
Sedimentary Rock (Quartz Sandstone)
sedimentary
Category
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Sedimentary Rock Fragments
Clastic Sedimentary Rock
sedimentary
Granite
Felsic intrusive igneous rock
igneous
Quartz Crystal on Matrix
Silicon Dioxide (SiO2)
mineral
Quartz (or Chert/Flint)
Silicon Dioxide (SiO2)
mineral
Banded Gneiss
Gneiss (high-grade metamorphic silicate rock)
metamorphic
Glacial Cobble with Granite Inclusion
Porphyritic Basalt or Andesite containing Granitic Xenolith
igneous
Granite
Intrusive Igneous Rock
igneous
Lapis Lazuli
(Na,Ca)8(AlSiO4)6(SO4,S,Cl)2 (Complex silicate rock)
rock
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Veined Limestone (Micrite) with Quartz/Calcite Veins
Calcium Carbonate (CaCO3) with Silicate or Carbonate inclusions
sedimentary
Sandstone
Clastic Sedimentary Rock
sedimentary
Granite
Granite (felsic intrusive igneous rock)
igneous
Vesicular Basalt (or Scoria)
Vesicular Basalt
igneous
Sandstone
Arenite
sedimentary
Banded Sandstone
Arenite (with iron oxide banding)
sedimentary
Quartz (Milky/Crystalline)
Silicon Dioxide (SiO2)
mineral
Sandstone (Ferruginous)
Arenite (Siliclastic Sedimentary Rock)
sedimentary
Granite
Granite
igneous
Unknown Tumbled Stone
Unknown (Too Blurry)
mineral
Basalt (Greenstone/Water-worn Pebble)
Basalt (containing Chlorite/Epidote)
igneous
Quartz Vein in Sedimentary Matrix
Silicon Dioxide (SiO2) with host rock
mineral
Granite Cobble
Granite
igneous
Greenschist (or Serpentinite) with Quartz-Feldspar Vein
Metabasalt / Greenschist Facies Rock
metamorphic
Quartz-veined Metamorphic Rock
Quartz-veined Schist or Gneiss
metamorphic
Likely weathered gneiss
Foliated metamorphic rock, commonly quartz–feldspar–mica gneiss
metamorphic
Gneiss
High-grade regional metamorphic rock (Foliated)
metamorphic
Quartz Geode
Silicon Dioxide (SiO2) within a sedimentary or volcanic shell
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Fossil Shell
Invertebrate fossil (Mollusca)
fossil
Sandstone Pebble
Sandstone (Silicon dioxide-rich clastic sedimentary rock)
sedimentary
Granite
Intrusive Igneous Rock
igneous
Quartz Geode
Silicon Dioxide (SiO2)
sedimentary
Granite
Felsic intrusive igneous rock
igneous
Orange Quartz (or Carnelian Chalcedony)
Silicon Dioxide (SiO2)
mineral
Granite
Felsic intrusive igneous rock
igneous
Sandstone with Desert Varnish
Arenite (SiO2 predominantly) with Ferromanganese coating
sedimentary
Sandstone
Clastic Sedimentary Rock
sedimentary
Moonstone
Orthoclase (Potassium Aluminum Silicate), Formula: (K,Na)AlSi3O8
mineral
Quartz Geode
Silicon Dioxide (SiO2) within a geode
mineral
Granite
Felsic intrusive igneous rock
igneous
Granite
Intrusive Igneous Rock (composed of quartz, alkali feldspar, and plagioclase)
igneous