Rock Identifier

Category

Man Made Alloy (Metallic)

Browse man made alloy (metallic) specimens identified by the Rock Identifier community.

Zebra Jasper (Jasper (variety of Quartz/Chalcedony), SiO2) — sedimentary

Zebra Jasper

Jasper (variety of Quartz/Chalcedony), SiO2

Sandstone (with Iron Staining) (Clastic sedimentary rock (SiO2 with Fe2O3 impurities)) — sedimentary

Sandstone (with Iron Staining)

Clastic sedimentary rock (SiO2 with Fe2O3 impurities)

Sandstone (Quartzose) (Arenite (primarily SiO2)) — sedimentary

Sandstone (Quartzose)

Arenite (primarily SiO2)

Sandstone (Quartz Arenite) (Sandstone (Chemical formula: primarily SiO2)) — sedimentary

Sandstone (Quartz Arenite)

Sandstone (Chemical formula: primarily SiO2)

Sandstone (specifically Lithic or Quartz Arenite) (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone (specifically Lithic or Quartz Arenite)

Arenite (composed primarily of SiO2)

Feldspar (specifically Orthoclase) (Potassium Aluminum Silicate (KAlSi3O8)) — mineral

Feldspar (specifically Orthoclase)

Potassium Aluminum Silicate (KAlSi3O8)

Veined Quartz (SiO2 (Silicon Dioxide)) — Mineral

Veined Quartz

SiO2 (Silicon Dioxide)

Green Fluorite in Host Rock (Fluorite (Calcium Fluoride, CaF2)) — mineral

Green Fluorite in Host Rock

Fluorite (Calcium Fluoride, CaF2)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Fluorite (Rainbow Fluorite) (Calcium Fluoride (CaF2)) — mineral

Fluorite (Rainbow Fluorite)

Calcium Fluoride (CaF2)

Amygdaloidal Basalt (Amygdaloidal Basalt (Mafic volcanic rock)) — igneous

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic volcanic rock)

Jasper (Jasper (Silicon Dioxide, SiO2)) — sedimentary

Jasper

Jasper (Silicon Dioxide, SiO2)

Coquina / Limonite-stained Limestone (Sedimentary Limestone with Iron Oxyhydroxide (FeO(OH)·nH2O)) — sedimentary

Coquina / Limonite-stained Limestone

Sedimentary Limestone with Iron Oxyhydroxide (FeO(OH)·nH2O)

Petrified Wood (Silicified Wood (primarily SiO2)) — sedimentary

Petrified Wood

Silicified Wood (primarily SiO2)

Basalt with Quartz/Calcite Inclusions (Mafic Volcanic Rock (Fe-Mg silicate rich)) — igneous

Basalt with Quartz/Calcite Inclusions

Mafic Volcanic Rock (Fe-Mg silicate rich)

Rose Quartz (Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese) — mineral

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Moqui Marble (Shaman Stone) (Ironstone Concretion (Fe2O3 with a sandstone core)) — sedimentary

Moqui Marble (Shaman Stone)

Ironstone Concretion (Fe2O3 with a sandstone core)

River Stone (Chert/Siltstone) (Cryptocrystalline Quartz (SiO2) with trace impurities) — sedimentary

River Stone (Chert/Siltstone)

Cryptocrystalline Quartz (SiO2) with trace impurities

Green Chalcedony (likely Chrysoprase or dyed Green Agate) (Silicon Dioxide (SiO2) with nickel impurities or chromium/dye) — mineral

Green Chalcedony (likely Chrysoprase or dyed Green Agate)

Silicon Dioxide (SiO2) with nickel impurities or chromium/dye

Jasper with Hematite inclusions (Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3)) — sedimentary

Jasper with Hematite inclusions

Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3)

Greenstone (Metabasalt / Greenschist facies rock) — metamorphic

Greenstone

Metabasalt / Greenschist facies rock

Milky Quartz (Quartz (Silicon Dioxide, SiO2)) — mineral

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Jasper with Hematite (Red Jasper) (Silicon Dioxide with Iron Oxide (SiO2 and Fe2O3)) — sedimentary (physico-chemical precipitate)

Jasper with Hematite (Red Jasper)

Silicon Dioxide with Iron Oxide (SiO2 and Fe2O3)

sedimentary (physico-chemical precipitate)

Milky Quartz with Iron Inclusions (Quartz (Silicon Dioxide, SiO2)) — mineral

Milky Quartz with Iron Inclusions

Quartz (Silicon Dioxide, SiO2)

Red Jasper (River Siltstone) (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Red Jasper (River Siltstone)

Silicon Dioxide (SiO2) with iron oxide inclusions

Rose Quartz (SiO2 (Silicon Dioxide)) — mineral

Rose Quartz

SiO2 (Silicon Dioxide)

Peridot (Olivine (specifically, the gem-quality variety forsterite, (Mg,Fe)2SiO4)) — Mineral

Peridot

Olivine (specifically, the gem-quality variety forsterite, (Mg,Fe)2SiO4)

Amygdaloidal Basalt (Amygdaloidal Basalt (with secondary mineral infilling)) — igneous

Amygdaloidal Basalt

Amygdaloidal Basalt (with secondary mineral infilling)

Sandstone (with Manganese staining) (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone (with Manganese staining)

Arenite (composed primarily of SiO2)

Picture Jasper (Silicon Dioxide (SiO2)) — sedimentary

Picture Jasper

Silicon Dioxide (SiO2)

Diamond (in Gold Jewelry) (Carbon (C)) — mineral

Diamond (in Gold Jewelry)

Carbon (C)

Sandstone (Sandstone (various mineral compositions)) — Sedimentary

Sandstone

Sandstone (various mineral compositions)

Sandstone (Arenite (SiO2 based with mineral cement)) — sedimentary

Sandstone

Arenite (SiO2 based with mineral cement)

Basalt (Basalt (containing mainly Plagioclase feldspar and Pyroxene)) — igneous

Basalt

Basalt (containing mainly Plagioclase feldspar and Pyroxene)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Green Fluorite (Calcium Fluoride (CaF2)) — mineral

Green Fluorite

Calcium Fluoride (CaF2)

Laterite (Laterite (Iron/Aluminum-rich oxide)) — sedimentary

Laterite

Laterite (Iron/Aluminum-rich oxide)

Blue Chalcedony (likely dyed Agate) (Silicon Dioxide (SiO₂)) — mineral

Blue Chalcedony (likely dyed Agate)

Silicon Dioxide (SiO₂)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Fluorite and Red Jasper (Fluorite (Calcium Fluoride, CaF2) and Red Jasper (Silicon Dioxide, SiO2)) — mineral

Fluorite and Red Jasper

Fluorite (Calcium Fluoride, CaF2) and Red Jasper (Silicon Dioxide, SiO2)

Quartz Pebble (Chert/Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble (Chert/Chalcedony)

Silicon Dioxide (SiO2)