Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Category
Industrial Byproduct (Often Confused With Igneous Rocks Or Meteorites)
Browse industrial byproduct (often confused with igneous rocks or meteorites) specimens identified by the Rock Identifier community.
Learn about Industrial Byproduct (Often Confused With Igneous Rocks Or Meteorites) in the encyclopedia
View all →
Garnet (Almandine)
Almandine (Fe3Al2(SiO4)3)
mineral
Biotite Schist
Biotite-bearing Schist (K(Mg,Fe)3AlSi3O10(F,OH)2)
metamorphic
Amazonite
Potassium Feldspar (KAlSi3O8)
mineral
Fluorite (Green)
Fluorite (Calcium Fluoride, CaF2)
mineral
Quartz (specifically Citrine or Iron-stained Quartz)
Silicon Dioxide (SiO2)
mineral
Chondrite Meteorite
Stony Meteorite (Ordinary Chondrite)
meteorite
Iron Meteorite
Iron-nickel alloy (primarily kamacite and taenite)
Meteorite (extraterrestrial material)
Garnet-Bearing Gneiss
Almandine-Garnet Gneiss
metamorphic
Sapphire (Raw/Rough)
Corundum (Al2O3)
mineral
Peridot and Citrine Gemstones (in a ring setting)
Peridot (Olivine: (Mg,Fe)2SiO4), Citrine (Quartz: SiO2)
mineral
Likely hematite-rich ironstone or metallic mineral fragment
Hematite (Fe₂O₃), possibly with magnetite (Fe₃O₄) or metallic iron
mineral
Agate
Silicon Dioxide (Chalcedony), SiO2
sedimentary
Red Garnet Gemstone
Pyrope-Almandine Garnet (Mg3Al2(SiO4)3 to Fe3Al2(SiO4)3)
gemstone
Aquamarine
Beryl (Be3Al2Si6O18)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Chert Nodules or Concretion
Cryptocrystalline Quartz (SiO2)
sedimentary
Yellow Quartz Pebble
SiO2 (Silicon Dioxide)
mineral
Scoria
Vesicular Mafic Igneous Rock
igneous
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Chert Nodule / Ironstone Concretion
Microcrystalline Quartz (SiO2) with Iron Oxides
sedimentary
Ruby (Corundum)
Corundum (Aluminum Oxide with Chromium), Al2O3:Cr
mineral
Eudialyte in Matrix
Na15Ca6(Fe,Mn)3Zr3(Si,Nb)(Si25O73)(O,OH,H2O)3(Cl,OH)2
mineral
Diamond
C (Carbon)
gemstone
Garnet
Garnet Group (complex nesosilicates with general formula X3Y2(SiO4)3, where X can be Ca, Mg, Fe2+, Mn2+ and Y can be Al, Fe3+, Cr3+, V3+)
Mineral
Blue Sapphire
Corundum (Al2O3)
mineral
Peridot
Olivine (Mg,Fe)2SiO4
Mineral
Ironstone Concretion (Limonite/Goethite)
Ferruginous Sandstone / Ironstone (FeO(OH)·nH2O)
sedimentary
Ironstone Concretion (Iron-rich Mudstone)
Siderite / Geothite concretion (FeCO3 / FeO(OH))
sedimentary
Agate
Silicon Dioxide (Chalcedony), SiO2
sedimentary
Serpentine
Antigorite / Lizardite / Chrysotile (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
metamorphic
Amazonite
Amazonite (KAlSi3O8)
mineral
Tourmaline (Multi-colored)
Complex Borosilicate (Na,Ca)(Li,Mg,Al,Fe)3Al6(BO3)3Si6O18(OH)4
mineral
Amazonite
K(AlSi3O8) - Potassium Aluminum Silicate (Microcline)
mineral
Scoria (Lava Rock)
Scoria (Vesicular Basaltic Glass/Rock)
igneous
Quartzite
Quartzite (primarily SiO2)
metamorphic
Milky quartz
Quartz, silicon dioxide (SiO₂)
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Variscite (in Matrix)
Hydrated aluminum phosphate (AlPO4·2H2O)
mineral
Garnet (Almandine variety)
Almandine Garnet (Fe3Al2(SiO4)3)
mineral
Gabbro
Gabbro (mafic intrusive rock)
igneous