Rock Identifier

Category

Non Geological

Browse non geological specimens identified by the Rock Identifier community.

Learn about Non Geological in the encyclopedia

Common Opal

Mudstone

Green Beryl

Matte Obsidian

Sapphire

Hornfels

Argillite

Mint Opal

Plazolite

Bixbite

Quartz (Common or Milky) (Silicon Dioxide (SiO2)) — mineral

Quartz (Common or Milky)

Silicon Dioxide (SiO2)

Quartz (Small Fragment) (Silicon Dioxide (SiO2)) — mineral

Quartz (Small Fragment)

Silicon Dioxide (SiO2)

Quartz (River Pebble) (Silicon Dioxide (SiO2)) — mineral

Quartz (River Pebble)

Silicon Dioxide (SiO2)

Red Sandstone (with possible iron oxide staining) (Sandstone (primarily Quartz with Hematite/Goethite cement)) — sedimentary

Red Sandstone (with possible iron oxide staining)

Sandstone (primarily Quartz with Hematite/Goethite cement)

Milky Quartz Pebble (Crystalline Silicon Dioxide (SiO2)) — mineral

Milky Quartz Pebble

Crystalline Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Quartz (Smoky/Milky variant) (Silicon Dioxide (SiO2)) — mineral

Quartz (Smoky/Milky variant)

Silicon Dioxide (SiO2)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

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

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Apatite (Apatite Group (e.g., Fluorapatite Ca5(PO4)3F, Chlorapatite Ca5(PO4)3Cl, Hydroxylapatite Ca5(PO4)3(OH))) — mineral

Apatite

Apatite Group (e.g., Fluorapatite Ca5(PO4)3F, Chlorapatite Ca5(PO4)3Cl, Hydroxylapatite Ca5(PO4)3(OH))

Nephrite Jade (Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2)) — Mineral

Nephrite Jade

Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2)

Granite Pebble with Quartz/Feldspar Vein (Intrusive Felsic Igneous Rock (Granite)) — igneous

Granite Pebble with Quartz/Feldspar Vein

Intrusive Felsic Igneous Rock (Granite)

Amazonite (likely mixed with other feldspars/minerals) (Amazonite is a variety of Microcline, which is a tectosilicate mineral, formula KAISi3O8. The mixed beads could include other feldspars or quartz.) — Mineral

Amazonite (likely mixed with other feldspars/minerals)

Amazonite is a variety of Microcline, which is a tectosilicate mineral, formula KAISi3O8. The mixed beads could include other feldspars or quartz.

Crystal Quartz Beads (likely Clear Quartz) (Quartz (SiO₂)) — Mineral

Crystal Quartz Beads (likely Clear Quartz)

Quartz (SiO₂)

Aventurine (Aventurine Quartz (SiO2 with inclusions)) — Mineral

Aventurine

Aventurine Quartz (SiO2 with inclusions)

Calcite (likely a tumbled specimen) (Calcite (CaCO
3
)) — Mineral

Calcite (likely a tumbled specimen)

Calcite (CaCO 3 )

Labradorite (Labradorite (a variety of Plagioclase Feldspar), Na(AlSi3O8) to Ca(Al2Si2O8)) — Mineral

Labradorite

Labradorite (a variety of Plagioclase Feldspar), Na(AlSi3O8) to Ca(Al2Si2O8)

Polished Septarian Nodule (Septarian calcite–aragonite concretion, commonly with barite or celestine) — sedimentary

Polished Septarian Nodule

Septarian calcite–aragonite concretion, commonly with barite or celestine

Sandstone with Quartz Vein (Quartz-cemented quartz arenite) — sedimentary

Sandstone with Quartz Vein

Quartz-cemented quartz arenite

Red Sandstone (Sedimentary Litharenite / Quartz Arenite) — sedimentary

Red Sandstone

Sedimentary Litharenite / Quartz Arenite

Gneiss Pebble (Gneiss (Metamorphic Foliated Rock)) — metamorphic

Gneiss Pebble

Gneiss (Metamorphic Foliated Rock)

Rhyolite (Porphyritic / Vesicular) (Rhyolite) — igneous

Rhyolite (Porphyritic / Vesicular)

Rhyolite

Pyrite or Chalcopyrite specimen (Gold-colored mineral coating) (Iron Sulfide (FeS2) / Copper Iron Sulfide (CuFeS2)) — mineral

Pyrite or Chalcopyrite specimen (Gold-colored mineral coating)

Iron Sulfide (FeS2) / Copper Iron Sulfide (CuFeS2)

Pyrite in Slate (Iron Sulfide (FeS2) in Slate host matrix) — metamorphic

Pyrite in Slate

Iron Sulfide (FeS2) in Slate host matrix

Sandstone Pebble (Quartz Arenite / Sandstone) — sedimentary

Sandstone Pebble

Quartz Arenite / Sandstone

Limestone (with Chert) (Calcium Carbonate (CaCO3) / Microcrystalline Quartz (SiO2)) — sedimentary

Limestone (with Chert)

Calcium Carbonate (CaCO3) / Microcrystalline Quartz (SiO2)

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

Petrified Wood

Silicified Wood (primarily SiO2)

Mica Schist with Pyrite (Mica Schist (FeS2 containing)) — metamorphic

Mica Schist with Pyrite

Mica Schist (FeS2 containing)

Conglomerate (Conglomerate rock (detrital sedimentary)) — sedimentary

Conglomerate

Conglomerate rock (detrital sedimentary)

Wishing Stone (Quartz Vein in Greywacke / Basalt) (Quartz vein in host rock (e.g. Meta-basalt or Greywacke)) — metamorphic

Wishing Stone (Quartz Vein in Greywacke / Basalt)

Quartz vein in host rock (e.g. Meta-basalt or Greywacke)

Gneiss (Metamorphic Gneiss) — metamorphic

Gneiss

Metamorphic Gneiss

Petrified Wood (Silicified Wood (SiO2)) — fossil

Petrified Wood

Silicified Wood (SiO2)

Peridotite (Olivine-bearing Xenolith) (Peridotite (predominantly Forsterite Olivine, Mg2SiO4)) — igneous

Peridotite (Olivine-bearing Xenolith)

Peridotite (predominantly Forsterite Olivine, Mg2SiO4)

Tumbled pegmatitic granite (Granite, chiefly quartz–feldspar–mica; likely altered pegmatite) — igneous

Tumbled pegmatitic granite

Granite, chiefly quartz–feldspar–mica; likely altered pegmatite

Fulgurite (Lechatelierite (Fulgurite / Petrified Lightning)) — mineral

Fulgurite

Lechatelierite (Fulgurite / Petrified Lightning)

Fulgurite (Fulgurite (Lechatelierite or fused sand/quartz)) — mineral

Fulgurite

Fulgurite (Lechatelierite or fused sand/quartz)

Limonite Concretion (Hydrated Iron Oxide / FeO(OH)·nH2O) — sedimentary

Limonite Concretion

Hydrated Iron Oxide / FeO(OH)·nH2O

Conglomerate (Clastic Sedimentary Rock (Conglomerate)) — sedimentary

Conglomerate

Clastic Sedimentary Rock (Conglomerate)

Chert with Limestone (Microcrystalline Quartz (SiO2) in Calcium Carbonate (CaCO3) matrix) — sedimentary

Chert with Limestone

Microcrystalline Quartz (SiO2) in Calcium Carbonate (CaCO3) matrix

Petrified Wood (Silicified wood (Quartz/Chalcedony replacement of cellulose)) — fossil

Petrified Wood

Silicified wood (Quartz/Chalcedony replacement of cellulose)

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Limonite Concretion (Limonite (Hydrated iron(III) oxide-hydroxide) FeO(OH)·nH2O) — sedimentary

Limonite Concretion

Limonite (Hydrated iron(III) oxide-hydroxide) FeO(OH)·nH2O