Rock Identifier

Category

Mineral (Silicate Replaced Organic Material)

Browse mineral (silicate replaced organic material) specimens identified by the Rock Identifier community.

Sandstone (Ferruginous) (Ferruginous Sandstone (SiO2 with Fe2O3)) — sedimentary

Sandstone (Ferruginous)

Ferruginous Sandstone (SiO2 with Fe2O3)

Diamond (Natural Carbon (C)) — mineral

Diamond

Natural Carbon (C)

Sugilite (Sugilite (KNa2(Fe,Mn,Al)2Li3Si12O30)) — mineral

Sugilite

Sugilite (KNa2(Fe,Mn,Al)2Li3Si12O30)

Quartz Geode/Cluster (Quartz (SiO2)) — mineral

Quartz Geode/Cluster

Quartz (SiO2)

Sandstone (Ferruginous) (Arenite (Fe-oxide cemented)) — sedimentary

Sandstone (Ferruginous)

Arenite (Fe-oxide cemented)

Quartz (Quartz (SiO2 - Silicon Dioxide)) — Mineral

Quartz

Quartz (SiO2 - Silicon Dioxide)

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

Sandstone (Quartzose)

Arenite (SiO2 principal)

Sandstone (Weathered Pebble) (Arenite (primarily SiO2)) — sedimentary

Sandstone (Weathered Pebble)

Arenite (primarily SiO2)

Shale (Fissile Mudrock (Clay-rich Sedimentary Rock)) — sedimentary

Shale

Fissile Mudrock (Clay-rich Sedimentary Rock)

Coarse-grained Granite (Granitoid (KAlSi3O8 + SiO2 + NaAlSi3O8)) — igneous

Coarse-grained Granite

Granitoid (KAlSi3O8 + SiO2 + NaAlSi3O8)

Silty Shale (Silty Shale (Fissile Sedimentary Rock)) — sedimentary

Silty Shale

Silty Shale (Fissile Sedimentary Rock)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Boxwork Quartz / Septarian Jasper (Boxwork (SiO2 with iron oxide inclusions)) — metamorphic

Boxwork Quartz / Septarian Jasper

Boxwork (SiO2 with iron oxide inclusions)

Conglomerate (Conglomerate rock) — sedimentary

Conglomerate

Conglomerate rock

Sandstone (Ferruginous) (Clastic Sedimentary Rock (SiO2 with Fe2O3/FeOOH cement)) — sedimentary

Sandstone (Ferruginous)

Clastic Sedimentary Rock (SiO2 with Fe2O3/FeOOH cement)

Included Quartz Beads (likely Phantom Quartz or Garden Quartz) (Quartz (SiO2) with various mineral inclusions) — Mineral

Included Quartz Beads (likely Phantom Quartz or Garden Quartz)

Quartz (SiO2) with various mineral inclusions

Granite Glacial Erratic (Intrusive Phaneritic Felsic Rock (Granite)) — igneous

Granite Glacial Erratic

Intrusive Phaneritic Felsic Rock (Granite)

Septarian Nodule (Galt) (Calcareous concretion / Septarian concretion) — sedimentary

Septarian Nodule (Galt)

Calcareous concretion / Septarian concretion

Ferruginous Sandstone (Ironstone) (Clastic Sedimentary Rock (composed of SiO2 with Fe2O3/FeO(OH) cement)) — sedimentary

Ferruginous Sandstone (Ironstone)

Clastic Sedimentary Rock (composed of SiO2 with Fe2O3/FeO(OH) cement)

Obsidian (Obsidian (Volcanic Glass, SiO2 + impurities)) — igneous

Obsidian

Obsidian (Volcanic Glass, SiO2 + impurities)

Corundum (Corundum (Al2O3)) — Mineral

Corundum

Corundum (Al2O3)

Sandstone (Graywacke type) (Clastic Sedimentary Rock (Lithic Sandstone)) — sedimentary

Sandstone (Graywacke type)

Clastic Sedimentary Rock (Lithic Sandstone)

Amygdaloidal Basalt (Amygdaloidal Basalt (extrusive volcanic rock with mineral inclusions)) — igneous

Amygdaloidal Basalt

Amygdaloidal Basalt (extrusive volcanic rock with mineral inclusions)

Diamond (or Cubic Zirconia imitation) (Carbon (C) - Native Element) — mineral

Diamond (or Cubic Zirconia imitation)

Carbon (C) - Native Element

Pyrite (Fool's Gold) (Iron Disulfide (FeS2)) — mineral

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

Sodalite (Sodalite - Na8(Al6Si6O24)Cl2) — mineral

Sodalite

Sodalite - Na8(Al6Si6O24)Cl2

Pyrite (Fool's Gold) (Iron Disulfide (FeS2)) — mineral

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Rough Quartz (Grey-Green) (Silicon Dioxide (SiO2)) — mineral

Rough Quartz (Grey-Green)

Silicon Dioxide (SiO2)

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2 (Lepidolite - Lithium-rich Mica)) — mineral

Lepidolite

K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2 (Lepidolite - Lithium-rich Mica)

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

Dragon Blood Jasper (Lizard Stone/Septarian Chalcedony) (Epidote with Black Hornblende and White Quartz mixture) — metamorphic

Dragon Blood Jasper (Lizard Stone/Septarian Chalcedony)

Epidote with Black Hornblende and White Quartz mixture

Chrysocolla Chalcedony (Hydrated Copper Phyllosilicate (Cu,Al)2H2Si2O5(OH)4 + SiO2) — mineral

Chrysocolla Chalcedony

Hydrated Copper Phyllosilicate (Cu,Al)2H2Si2O5(OH)4 + SiO2

Diamond (Native Carbon (C)) — mineral

Diamond

Native Carbon (C)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Sandstone (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone

Arenite (composed primarily of SiO2)

Sandstone (Quartz-rich) (Arenite (SiO2 based)) — sedimentary

Sandstone (Quartz-rich)

Arenite (SiO2 based)

Granite (Phaneritic Felsic Igneous Rock (Granite)) — igneous

Granite

Phaneritic Felsic Igneous Rock (Granite)

Ferruginous Siltstone or Mudstone (Ferruginous Siltstone / Goethitic Sandstone) — sedimentary

Ferruginous Siltstone or Mudstone

Ferruginous Siltstone / Goethitic Sandstone

Sandstone (Arenite (primarily SiO2, silica)) — sedimentary

Sandstone

Arenite (primarily SiO2, silica)

Chert (Nodule) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Nodule)

Microcrystalline or Cryptocrystalline Quartz (SiO2)