Specular Hematite with Quartz
Ferric oxide (Fe2O3) and Silicon dioxide (SiO2)
Mineral
Category
Man Made
Browse man made specimens identified by the Rock Identifier community.
Learn about Man Made in the encyclopedia
View all →
Bornite (Peacock Ore)
Bornite (Cu5FeS4)
mineral
Quartzite
Quartzite (primarily SiO2)
metamorphic
Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Gold Nugget
Native Gold (Au)
mineral
Fluorite (Rainbow Fluorite)
Calcium Fluoride (CaF2)
mineral
Jasper
Silicon dioxide (SiO2)
sedimentary
Fluorite (often called Rainbow Fluorite or Purple-Green Fluorite)
Calcium Fluoride (CaF2)
mineral
Sandstone (with potential trace fossils)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Rhodonite
Rhodonite (Manganese silicate), (Mn,Fe,Mg,Ca)SiO3
mineral
Shale
Shale (clay-sized silicate minerals)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Granite
Granite (felsic intrusive igneous rock)
igneous
Quartz with Iron Oxide Inclusions
Silicon Dioxide (SiO2) with Hematite/Limonite coatings
mineral
Diamond
C (Carbon)
gemstone
Gold Nugget
Native Gold (Au)
mineral
Black Chert (Flint)
Silicon Dioxide (SiO2)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Massive Quartz with Host Rock
Silicon Dioxide (SiO2)
mineral
Rose Quartz
SiO2 (Silicon Dioxide)
mineral
Greenstone / Serpentinite
Serpentinite (complex of Mg, Fe, Ni, Al, Zn, Mn silicate minerals including Antigorite, Lizardite, and Chrysotile)
metamorphic
Olivine (Peridot)
Magnesium Iron Silicate ((Mg, Fe)2SiO4)
mineral
Pink Quartzite Pebble
Quartzite (SiO2)
metamorphic
Green Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Fluorite (Blue)
Calcium Fluoride (CaF2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Quartzite
Quartzite (primarily SiO2)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Feldspar (Orthoclase)
Potassium Feldspar (KAlSi3O8)
mineral
Sandstone
Arenite (primarily SiO2)
sedimentary
Limestone
Carbonate rock (CaCO3)
sedimentary
Sandstone (Weathered Pebble)
Arenite (SiO2 primarily)
sedimentary
Quartzwacke / Impure Sandstone
Arenite with minor lithic fragments (Silicon Dioxide matrix)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Diamond
Carbon (C)
gemstone
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
sedimentary
Obsidian
Obsidian (Volcanic Glass)
igneous
Greenstone / Epidosite
Epidosite (Metasomatic rock consisting mainly of Epidite Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH) and Quartz)
metamorphic
Chalcedony on Matrix
Silicon Dioxide (SiO2)
mineral
Quartzite
Quartzite (chiefly SiO2)
metamorphic
Marble
Recrystallized Calcite (CaCO3) or Dolomite (CaMg(CO3)2)
metamorphic
Turquoise
Turquoise (CuAl6(PO4)4(OH)8·4H2O)
mineral