Vesicular Basalt (River Pebble)
Vesicular Basalt
igneous
Category
Mineral Like Byproduct
Browse mineral like byproduct specimens identified by the Rock Identifier community.
Greenschist
Greenschist facies rock (containing chlorite, actinolite, albite, and epidote)
metamorphic
Peacock Ore
Bornite (Cu5FeS4)
mineral
Vanadinite on Matrix
Vanadinite (Pb5(VO4)3Cl)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Lepidolite in Quartz (Lithium-bearing Ore)
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2) and Quartz (SiO2)
igneous/mineral
Scoria (Lava Rock)
Vesicular Basalt / Scoria
igneous
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Quartzite Pebble
Quartzite (primarily SiO2)
metamorphic
Moss Agate
Chalcedony (SiO2) with dendritic inclusions of Manganese or Iron oxide
mineral
Sandstone
Arenite (composed mainly of SiO2)
sedimentary
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Mineral
Fossil Shell (Bivalve)
Class Bivalvia (Likely a member of the Ostreidae or Gryphaeidae family), CaCO3
sedimentary
Basalt
Extrusive Mafic Igneous Rock (composed primarily of plagioclase feldspar and pyroxene)
igneous
Sandstone
Arenite
sedimentary
Quartz (Milky/Crystalline variety)
Silicon Dioxide (SiO2)
mineral
Spessartine Garnet
Manganese aluminum silicate (Mn2+3Al2(SiO4)3)
mineral
Citrine
Silicon Dioxide (SiO2)
mineral
Red Sandstone
Arenite (Fe2O3 rich)
sedimentary
Amygdaloidal Basalt with Secondary Minerals
Basalt containing secondary mineralization (likely Chlorite, Celadonite, or Zeolites)
igneous
Mica Schist
Mica Schist (predominantly Muscovite or Biotite sheet silicates)
metamorphic
Blue Quartzite
Quartzite (primarily SiO2) with inclusions like Dumortierite or Crocidolite
metamorphic
Red Sandstone (Iron-rich Sandstone)
Clastic Sedimentary Rock - Quartz Arenite / Arkose with Hematite Cement
sedimentary
Blue Quartzite (Aventurine)
Quartzite (primarily SiO2) with inclusions of Dumortierite or Magnesio-riebeckite
metamorphic
Sandstone
Arenite (SiO2 based)
sedimentary
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
Mineral (variety of Quartz)
Blue Chalcedony
Chalcedony (a cryptocrystalline variety of Quartz - SiO₂)
Mineral
Sandstone
Arenite (Sedimentary rock composed of sand-sized grains, primarily SiO2)
sedimentary
Sandstone (with minor quartz and possible clay components)
Clastic Sedimentary Rock (SiO2 dominated)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Septarian Nodule (or Mudstone with Septarian Cracking)
Septarian Concretion (Composition: Calcite, Aragonite, and Limestone/Claystone)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Sedimentary Sandstone (Sandstone Slab)
Arenite (SiO2 with Fe2O3 staining)
sedimentary
Sandstone (Quartzite texture)
Arenite (SiO2 secondary)
sedimentary
Sandstone
Arenite
sedimentary
Chert (Jasper/Flint variety)
Silicon Dioxide (SiO2)
sedimentary
Chalcopyrite
Chalcopyrite (CuFeS2)
mineral
Sandstone (Ferruginous)
Arenite (composed primarily of SiO2 with Fe2O3 staining)
sedimentary
Smoky Quartz
Smoky Quartz (Silicon Dioxide - SiO2)
mineral
Nephrite Jade
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
metamorphic
Gneiss
Gneiss (high-grade metamorphic rock)
metamorphic
Calcite (commonly referred to as Orange Calcite or Honey Calcite given its color)
Calcite
Mineral