Mixed Rock Collection (Pebbles and Stones)
Various geological specimens
igneous, sedimentary, and metamorphic
Category
Not A Rock (Man Made Polymer)
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Ruby in Zoisite
Anyolite (composite of Corundum and Zoisite)
metamorphic
Basalt
Extrusive igneous rock
igneous
Basalt
Extrusive Igneous Rock
igneous
Basalt
Extrusive Igneous Rock
igneous
Basalt
Extrusive Igneous Rock
igneous
Basalt
Mafic extrusive igneous rock
igneous
Metaconglomerate
Metaconglomerate (Quartzite conglomerate)
metamorphic
Dalmatian Jasper
Peralkaline Quartz-Feldspar Rock with Arfvedsonite
igneous
Garnet Schist
Almandine Garnet-bearing Mica Schist
metamorphic
Granite
Intrusive Igneous Rock (composed primarily of quartz, alkali feldspar, and plagioclase)
igneous
Druzy Quartz on Limestone
Silicon Dioxide (SiO2) on Calcium Carbonate (CaCO3)
sedimentary
Basalt with Xenolith
Extrusive Igneous Rock containing Mantle Xenolith
igneous
Chert (Jasper/Flint Pebble)
Microcrystalline quartz (SiO2)
sedimentary
Granite-like igneous rock
Likely medium-grained granite or granodiorite; quartz–feldspar–mica aggregate
igneous
Sandstone (Painted)
Arenite (primarily SiO2)
sedimentary
Vesicular Basalt
Extrusive mafic igneous rock
igneous
Serpentine (Serpentinite)
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
metamorphic
Basalt
Basalt (Mafic Extrusive Igneous Rock)
igneous
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Red Sandstone
Arenite (Ferruginous Sandstone)
sedimentary
Quartz-rich gravel fragment
Quartz (silicon dioxide, SiO₂), possibly with feldspar or carbonate inclusions
mineral
Rock Specimen
Unclassified rock specimen
sedimentary
Quartzite Pebble with Feldspar Vein
Quartzite (SiO2) with Feldspar (KAlSi3O8)
metamorphic
Schist (likely Mica Schist)
Mica Schist
metamorphic
Yellow Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Beach Pebble (Basalt/Porphyry)
Weathered Basalt or Porphyry
igneous
Quartz pebble with calcite
Silicon dioxide (SiO2) with Calcium carbonate (CaCO3)
sedimentary
Yellow Jasper with Hematite
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
sedimentary
Serpentine
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
metamorphic
Vesicular Basalt (or Scoria)
Extrusive Igneous Rock (Mafic)
igneous
Basalt Pebble / River Stone
Basalt (Mafic Extrusive Igneous Rock)
igneous
Sandstone with Iron Banding
Arenite with Hematite or Limonite staining (SiO2 with Fe2O3)
sedimentary
Pink Granite
Phaneritic Quartz-Feldspar Plutonic Rock
igneous
Basalt
Extrusive Igneous Rock
igneous
Wishing Rock (Quartz Vein in Host Rock)
Silicon dioxide (SiO2) vein in various host rocks
Igneous/Sedimentary/Metamorphic with Mineral Vein
Limestone
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Unknown Rock Fragment
Unknown
unknown
Fossilized Shell Impression / Siltstone Fossil
Bivalvia / Brachiopoda mold in Siltstone
fossil
Basalt Pebble
Extrusive Igneous Rock / Basalt
igneous
Basalt
Extrusive Igneous Rock
igneous
Limestone
Calcium Carbonate (CaCO3)
sedimentary