Conglomerate
Conglomerate (a clastic sedimentary rock)
Sedimentary Rock
Category
Mineral Like Byproduct (Technogenic)
Browse mineral like byproduct (technogenic) specimens identified by the Rock Identifier community.
Learn about Mineral Like Byproduct (Technogenic) in the encyclopedia
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Druzy Quartz on Quartz Base
Silicon Dioxide (SiO2)
mineral
Granite
Plutonic felsic igneous rock
igneous
Gneiss
Metamorphic Rock (Gneissic texture)
metamorphic
Rose Quartz
Silicon Dioxide (SiO2)
mineral
Peacock Ore (Bornite or Chalcopyrite)
Bornite (Cu₅FeS₄) or iridescent Chalcopyrite (CuFeS₂)
mineral
Basalt with vesicles (Amygdaloidal Basalt)
Amygdaloidal Basalt (predominantly Plagioclase and Pyroxene)
igneous
Bauxite
Bauxite (Mixture of Hydrous Aluminum Oxides)
sedimentary
Fossilized Oyster Shell
Exogyra or Ostrea (Gryphaeidae/Ostreidae family)
fossil
Bauxite
Bauxite (Mixture including Gibbsite Al(OH)3, Boehmite γ-AlO(OH), and Diaspore α-AlO(OH))
sedimentary
Blue Topaz
Al2SiO4(F,OH)2 (Aluminum silicate fluoride hydroxide)
gemstone
Limonite / Goethite Ironstone
FeO(OH)·nH2O (Hydrous iron oxide)
mineral
Fossilized Shark Teeth
Carcharhiniformes or Lamniformes species (common mineral: Fluorapatite/Ca5(PO4)3F)
sedimentary (fossilized organic matter)
Fluorite
Calcium fluoride (CaF2)
mineral
Orbicular Granite
Orbicular Granitoid
igneous
Granite
Intrusive Felsic Igneous Rock
igneous
Rose Quartz
Silicon Dioxide (SiO2) with traces of titanium, iron, or manganese
mineral
Galena
Lead(II) sulfide (PbS)
mineral
Sandstone (Quartzite texture)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone (Quartzose Sandstone)
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Quartz (vein quartz)
SiO2 (Silicon Dioxide)
Mineral
Pyrite in Matrix (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Phantom Quartz
Silicon Dioxide (SiO2) with inclusions
mineral
Smoky Quartz with Rutile Inclusions
Silicon Dioxide (SiO2) with TiO2 needles
mineral
Basalt River Pebble
Basalt (Aphanitic Mafic Volcanic Rock)
igneous
Graphic Granite
Graphic Granite (a runic intergrowth of Quartz and Feldspar)
igneous
Banded Gneiss
Gneiss (Foliated Metamorphic Rock)
metamorphic
Fluorite (Green Fluorite)
Fluorite (Calcium Fluoride, CaF2)
mineral
Schist
Mica Schist
metamorphic
Botryoidal quartz (likely chalcedony or druzy quartz)
Silicon dioxide, SiO₂; microcrystalline quartz (chalcedony) with possible drusy quartz coating
mineral
River Pebble
Lithified clastic sediment
sedimentary
Pebble with Basaltic and Quartz-rich Banding
Polymictic Lithic Pebble
sedimentary
Quartz (likely heat-treated or colored cord)
Silicon Dioxide (SiO2)
mineral
Chert Pebble (Jasper variety)
Silicon Dioxide (SiO2)
sedimentary
Sea Shell Fragment (Calcium Carbonate)
Aragonite / Calcite (CaCO3)
mineral
Milky Quartz with Hematite inclusions
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3)
mineral
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Dendritic Agate
Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions
mineral
Peach Moonstone
Potassium Aluminum Silicate (KAlSi3O8)
mineral
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Botryoidal Hematite
Iron(III) oxide (Fe2O3)
mineral