Quartz pebble (Agate / Chalcedony)
Silicon Dioxide (SiO2)
mineral
Category
Mineral Like Byproduct (Often Mistaken For Igneous Rock Or Meteorite)
Browse mineral like byproduct (often mistaken for igneous rock or meteorite) specimens identified by the Rock Identifier community.
Learn about Mineral Like Byproduct (Often Mistaken For Igneous Rock Or Meteorite) in the encyclopedia
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Taaffeite
BeMgAl4O8 (Beryllium Magnesium Aluminum Oxide)
mineral
Chalcopyrite
Chalcopyrite (CuFeS2)
mineral
Blue Apatite
Fluorapatite / Apatite group (Ca5(PO4)3(F,Cl,OH))
mineral
Quartz (Small Fragment)
Silicon Dioxide (SiO2)
mineral
Granodiorite
Granodiorite (Quartz-Feldspar-Biotite Plutonic Rock)
igneous
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Granite Boulder
Intrusive Igneous Rock
igneous
Gold Ore
Auriferous Quartz and Sulfide Mineralization in Host Rock
igneous
Rainbow Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Gabbro
Gabbro
igneous
Basalt
Extrusive Igneous Rock (Mafic)
igneous
Granite
Felsic Intrusive Igneous Rock
igneous
Fluorite
Calcium Fluoride (CaF2)
mineral
Feldspar Granodiorite
Granodiorite (Na,Ca)(Si,Al)4O8
igneous
Fluorite
Calcium Fluoride (CaF2)
mineral
Diorite
Diorite (intermediate plutonic rock)
igneous
Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Granite
Phaneritic Igneous Rock (Granite)
igneous
Basalt (Water-worn Pebble)
Basalt (Aphanitic Mafic Igneous Rock)
igneous
Chinese Writing Stone
Porphyritic Basalt or Porphyritic Andesite with Feldspar phenocrysts (SiO2-rich Silicates)
igneous
Sandstone Concretion with Quartz Center
Sedimentary Clastic Rock (SiO2 matrix with Quartz core)
sedimentary
Garnet (Almandine or Spessartine likely)
Garnet Group Minerals (e.g., Almandine Fe3Al2(SiO4)3, Pyrope Mg3Al2(SiO4)3, Spessartine Mn3Al2(SiO4)3)
Mineral
Red Garnet (Almandine-Pyrope series)
Garnet Group, Almandine (Fe3Al2(SiO4)3) or Pyrope (Mg3Al2(SiO4)3)
mineral
Porphyritic Basalt
Basalt (Mafic volcanic rock)
igneous
Granite
Granite (Phaneritic Quartz-Feldspar rock)
igneous
Ruby
Corundum (Aluminium Oxide with Chromium impurities, Al2O3:Cr)
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Crystal
Silicon Dioxide (SiO2)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Granite
Phaneritic Felsic Igneous Rock
igneous
Garnet Schist
Almandine Garnet-bearing Mica Schist
metamorphic
Quartz (Milky/Iron-stained)
Silicon Dioxide (SiO2)
mineral
Granite
Granite (Felsic intrusive igneous rock)
igneous
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Basalt
Mafic Igneous Pebble
igneous
Basalt
Basalt (SiO2 percentage between 45% and 52%)
igneous
Basalt
Basalt
igneous