Rock Identifier

Category

Mineralogical Specimen

Browse mineralogical specimen specimens identified by the Rock Identifier community.

Learn about Mineralogical Specimen in the encyclopedia

Emerald in Matrix

Emerald in Matrix

Morganite Crystal

Morganite Crystal

Aquamarine Matrix

Aquamarine Matrix

Emerald Crystal

Emerald Crystal

Aquamarine Crystal

Aquamarine Crystal

Mushroom Tourmaline

Mushroom Tourmaline

White Beryl

Smoky Quartz

Clear Obsidian

Goshenite Crystal

Goshenite Crystal

Magnetite

Crocoite

Hematite (Hematite (Fe2O3)) — mineral

Hematite

Hematite (Fe2O3)

Basalt (Extrusive igneous rock) — igneous

Basalt

Extrusive igneous rock

Carnelian (Silicon dioxide (chalcedony variety), SiO2) — gemstone

Carnelian

Silicon dioxide (chalcedony variety), SiO2

Red Jasper (Silicon Dioxide (Microcrystalline Quartz), SiO2) — sedimentary

Red Jasper

Silicon Dioxide (Microcrystalline Quartz), SiO2

Iron-stained Quartz (Silicon Dioxide (SiO2) with Hematite/Limonite inclusions) — mineral

Iron-stained Quartz

Silicon Dioxide (SiO2) with Hematite/Limonite inclusions

Red Jasper (Silicon dioxide (Microcrystalline Quartz, $SiO_2$)) — sedimentary

Red Jasper

Silicon dioxide (Microcrystalline Quartz, $SiO_2$)

Heart-shaped Quartz (Silicon Dioxide (SiO2)) — mineral

Heart-shaped Quartz

Silicon Dioxide (SiO2)

Rough Chalcedony / Jasper Agate Nodule (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Rough Chalcedony / Jasper Agate Nodule

Silicon Dioxide (SiO2) - Microcrystalline Quartz

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

Milky Quartz Pebble with Iron Inclusions

Silicon Dioxide (SiO2)

Carnelian (Tumbled) (Silicon Dioxide (SiO2)) — mineral

Carnelian (Tumbled)

Silicon Dioxide (SiO2)

Orange Quartz / Peach Aventurine (Silicon Dioxide (SiO2)) — mineral

Orange Quartz / Peach Aventurine

Silicon Dioxide (SiO2)

Agate (Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Agate (Chalcedony)

Silicon Dioxide (SiO2)

Red Jasper (Beach Pebble) (Jasper (Cryptocrystalline Quartz, SiO2)) — mineral

Red Jasper (Beach Pebble)

Jasper (Cryptocrystalline Quartz, SiO2)

Diorite (Salt and Pepper Rock) (Diorite) — igneous

Diorite (Salt and Pepper Rock)

Diorite

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

Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Amethyst (Amethyst (Silicon Dioxide, SiO2 with Iron impurities)) — mineral

Amethyst

Amethyst (Silicon Dioxide, SiO2 with Iron impurities)

Orange Quartzite (or Quartz River Pebble) (Silicon Dioxide (SiO2) - Quartzite) — metamorphic

Orange Quartzite (or Quartz River Pebble)

Silicon Dioxide (SiO2) - Quartzite

Bauxite (Hydrated aluminum oxides (mixture of gibbsite, boehmite, and diaspore)) — sedimentary

Bauxite

Hydrated aluminum oxides (mixture of gibbsite, boehmite, and diaspore)

Vesicular Basalt (River Cobble) (Basalt (Mafic Extrusive Igneous Rock)) — igneous

Vesicular Basalt (River Cobble)

Basalt (Mafic Extrusive Igneous Rock)

Glaucophane Schist (Glaucophane-bearing Schist (Na2(Mg,Fe)3Al2Si8O22(OH)2)) — metamorphic

Glaucophane Schist

Glaucophane-bearing Schist (Na2(Mg,Fe)3Al2Si8O22(OH)2)

Mica Schist (Mica Schist (predominantly Muscovite KAl2(AlSi3O10)(OH)2 and Quartz SiO2)) — metamorphic

Mica Schist

Mica Schist (predominantly Muscovite KAl2(AlSi3O10)(OH)2 and Quartz SiO2)

Blue Quartz (or Blue Aventurine) (Silicon Dioxide (SiO2) with inclusions (typically Crocidolite or Dumortierite)) — mineral

Blue Quartz (or Blue Aventurine)

Silicon Dioxide (SiO2) with inclusions (typically Crocidolite or Dumortierite)

Basalt (Vesicular or Porphyritic River Pebble) (Mafic Volcanic Rock (Aphanitic to Porphyritic Basalt)) — igneous

Basalt (Vesicular or Porphyritic River Pebble)

Mafic Volcanic Rock (Aphanitic to Porphyritic Basalt)

$Jasper pebble with vein quartz cross-cutting fractures (Microcrystalline Quartz (SiO2) with iron oxide inclusions) — sedimentary$

Jasper pebble with vein quartz cross-cutting fractures

Microcrystalline Quartz (SiO2) with iron oxide inclusions

Hematite (Iron Oxide (Fe2O3)) — mineral

Hematite

Iron Oxide (Fe2O3)

Red Jasper (or Agate/Jasper mixture) (Silicon Dioxide (SiO2) with Iron Oxide inclusions) — mineral

Red Jasper (or Agate/Jasper mixture)

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Agate / Chalcedony Pebble (Silicon Dioxide (SiO2)) — mineral

Agate / Chalcedony Pebble

Silicon Dioxide (SiO2)

Green Jasper (Quartz (Silicon Dioxide, SiO2) with iron silicate inclusions) — sedimentary

Green Jasper

Quartz (Silicon Dioxide, SiO2) with iron silicate inclusions

Amethyst (Tumbled) (Silicon Dioxide (SiO2)) — mineral

Amethyst (Tumbled)

Silicon Dioxide (SiO2)

Quartzite (Ferruginous Quartz) (Silicon Dioxide (SiO2) with Iron Oxide inclusions) — metamorphic

Quartzite (Ferruginous Quartz)

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Cherry Quartz with Rose Quartz (Crystalline Quartz (SiO2) with glass-based synthetic components) — gemstone

Cherry Quartz with Rose Quartz

Crystalline Quartz (SiO2) with glass-based synthetic components

Quartz Mineral (Silicon Dioxide (SiO2)) — mineral

Quartz Mineral

Silicon Dioxide (SiO2)

Vesicular Basalt or Hag Stone (Basalt (with vesicles) or bored Sedimentary Rock) — igneous

Vesicular Basalt or Hag Stone

Basalt (with vesicles) or bored Sedimentary Rock

Schorl (Black Tourmaline) in Quartz/Feldspar Matrix (NaFe3Al6(BO3)3Si6O18(OH)4 (Schorl)) — igneous

Schorl (Black Tourmaline) in Quartz/Feldspar Matrix

NaFe3Al6(BO3)3Si6O18(OH)4 (Schorl)

Massive White Quartz (Silicon Dioxide (SiO2)) — mineral

Massive White Quartz

Silicon Dioxide (SiO2)

Copper Ore with Malachite and Chalcocite (Copper-bearing Mineral Assemblage (Cu2CO3(OH)2 + Cu2S)) — mineral

Copper Ore with Malachite and Chalcocite

Copper-bearing Mineral Assemblage (Cu2CO3(OH)2 + Cu2S)

Tumbled Clear Quartz/Rock Crystal (Silicon Dioxide (SiO2)) — mineral

Tumbled Clear Quartz/Rock Crystal

Silicon Dioxide (SiO2)

Greenstone / Greenschist (Chlorite schist / Epidiorite / Metabasalt) — metamorphic

Greenstone / Greenschist

Chlorite schist / Epidiorite / Metabasalt

Banded Agate (specifically Carnelian Agate) (Silicon Dioxide (SiO2)) — mineral

Banded Agate (specifically Carnelian Agate)

Silicon Dioxide (SiO2)

Quartzite Pebble (Quartzite (SiO2)) — metamorphic

Quartzite Pebble

Quartzite (SiO2)

Hematite Nodules (Moqui Marbles style) (Iron Oxide (Fe2O3)) — sedimentary

Hematite Nodules (Moqui Marbles style)

Iron Oxide (Fe2O3)

Green Quartzite (Quartzite (SiO2 with chlorite/epidote inclusions)) — metamorphic

Green Quartzite

Quartzite (SiO2 with chlorite/epidote inclusions)