Rock Identifier

Category

Mineral (Specifically A Mineraloid)

Browse mineral (specifically a mineraloid) specimens identified by the Rock Identifier community.

Learn about Mineral (Specifically A Mineraloid) in the encyclopedia

Shungite

Anatase

Sperrylite

Olenite

Buergerite

Hutcheonite

Celsian

Coal

Glauconite

Rock Salt

Baddeleyite

Talc

Clear Quartz Crystal (Silicon Dioxide (SiO2), Quartz) — mineral

Clear Quartz Crystal

Silicon Dioxide (SiO2), Quartz

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Rose Quartz (SiO2 (Silicon Dioxide)) — gemstone

Rose Quartz

SiO2 (Silicon Dioxide)

Sodalite (Sodalite (Na8Al6Si6O24Cl2)) — mineral

Sodalite

Sodalite (Na8Al6Si6O24Cl2)

Emerald in Matrix (Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities) — gemstone

Emerald in Matrix

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

Prehnite (Prehnite (Ca2Al(AlSi3O10)(OH)2)) — mineral

Prehnite

Prehnite (Ca2Al(AlSi3O10)(OH)2)

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

Banded Agate

Silicon Dioxide (SiO2) - Chalcedony

Alexandrite (Chrysoberyl (BeAl2O4)) — mineral

Alexandrite

Chrysoberyl (BeAl2O4)

Limonite or Ironstone Concretion (FeO(OH)·nH₂O (Hydrated iron oxide-hydroxide)) — mineral

Limonite or Ironstone Concretion

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

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

Ferruginous Quartz

Quartz (Silicon Dioxide, SiO2) with Iron Oxide Inclusions

Sunstone (Feldspar group (Plagioclase / Oligoclase)) — mineral

Sunstone

Feldspar group (Plagioclase / Oligoclase)

Quartz Geode (Silicon Dioxide (SiO2)) — sedimentary

Quartz Geode

Silicon Dioxide (SiO2)

Agate Geode Nodule (Chalcedony / Quartz (SiO2)) — mineral

Agate Geode Nodule

Chalcedony / Quartz (SiO2)

Malachite-Bearing Copper Ore (Cu2CO3(OH)2 (Malachite) in host rock) — mineral

Malachite-Bearing Copper Ore

Cu2CO3(OH)2 (Malachite) in host rock

Blue Calcite (Calcium Carbonate (CaCO3)) — mineral

Blue Calcite

Calcium Carbonate (CaCO3)

Quartz-bearing Pegmatite with Metallic Sulfides (Pegmatite / Quartz-Feldspar Matrix with Pyrite and Mica) — igneous

Quartz-bearing Pegmatite with Metallic Sulfides

Pegmatite / Quartz-Feldspar Matrix with Pyrite and Mica

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Hematite Pebble (Hematite (Fe2O3)) — mineral

Hematite Pebble

Hematite (Fe2O3)

Quartzite Cobble / Quartz River Pebble (Silicon Dioxide (SiO2) - Quartzite / Quartz) — metamorphic

Quartzite Cobble / Quartz River Pebble

Silicon Dioxide (SiO2) - Quartzite / Quartz

Red Jasper Pebble (Silicon Dioxide (SiO2) with Iron Oxide inclusions) — sedimentary

Red Jasper Pebble

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Quartzite with Dendritic Manganese Oxide Inclusions (Metamorphic Quartzite (SiO2 with Mn-oxides)) — metamorphic

Quartzite with Dendritic Manganese Oxide Inclusions

Metamorphic Quartzite (SiO2 with Mn-oxides)

Quartz with Calcite / Geode Fragment (Silicon Dioxide (SiO2) / Calcium Carbonate (CaCO3)) — mineral

Quartz with Calcite / Geode Fragment

Silicon Dioxide (SiO2) / Calcium Carbonate (CaCO3)

Imperial Topaz (Aluminum silicate fluoride hydroxide (Al2SiO4(F,OH)2)) — mineral

Imperial Topaz

Aluminum silicate fluoride hydroxide (Al2SiO4(F,OH)2)

Prehnite (Prehnite - Ca2Al(AlSi3O10)(OH)2) — mineral

Prehnite

Prehnite - Ca2Al(AlSi3O10)(OH)2

Emerald in Matrix (Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities) — mineral

Emerald in Matrix

Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities

Amethyst (Faceted) (Silicon Dioxide with iron impurities (SiO2)) — gemstone

Amethyst (Faceted)

Silicon Dioxide with iron impurities (SiO2)

Specularite in Quartz (Specular Hematite (Fe2O3) in Quartz (SiO2)) — mineral

Specularite in Quartz

Specular Hematite (Fe2O3) in Quartz (SiO2)

Quartz with Epidote (Silicon Dioxide (SiO2) with Calcium Aluminum Iron Silicate [Ca2(Al,Fe)3(SiO4)3(OH)]) — metamorphic

Quartz with Epidote

Silicon Dioxide (SiO2) with Calcium Aluminum Iron Silicate [Ca2(Al,Fe)3(SiO4)3(OH)]

Bornite (Copper Iron Sulfide (Cu5FeS4)) — mineral

Bornite

Copper Iron Sulfide (Cu5FeS4)

Quartz Druzy on Matrix (Silicon Dioxide (SiO2)) — mineral

Quartz Druzy on Matrix

Silicon Dioxide (SiO2)

Citrine Quartz (Silicon Dioxide (SiO2)) — mineral

Citrine Quartz

Silicon Dioxide (SiO2)

Peacock Ore (Bornite (Cu5FeS4)) — mineral

Peacock Ore

Bornite (Cu5FeS4)

Prehnite (Prehnite (Ca2Al2Si3O10(OH)2)) — mineral

Prehnite

Prehnite (Ca2Al2Si3O10(OH)2)

Tiger's Eye (Pseudomorph of Quartz (SiO2) after Crocidolite) — mineral

Tiger's Eye

Pseudomorph of Quartz (SiO2) after Crocidolite

Pegmatite (Granitic) with Tourmaline (Granitic Pegmatite (containing Schorl and Quartz)) — igneous

Pegmatite (Granitic) with Tourmaline

Granitic Pegmatite (containing Schorl and Quartz)

Peacock Ore (Bornite (Cu5FeS4) or Chalcopyrite treated with acid) — mineral

Peacock Ore

Bornite (Cu5FeS4) or Chalcopyrite treated with acid

Rutilated Quartz (Silicon Dioxide (SiO2) with Titanium Dioxide (TiO2) inclusions) — mineral

Rutilated Quartz

Silicon Dioxide (SiO2) with Titanium Dioxide (TiO2) inclusions

Sunstone (Plagioclase Feldspar (containing (Ca,Na)(Al,Si)4O8 with Hematite or Copper inclusions)) — mineral

Sunstone

Plagioclase Feldspar (containing (Ca,Na)(Al,Si)4O8 with Hematite or Copper inclusions)

Amethyst (Quartz variety) (Amethyst - SiO2 (Silicon Dioxide with Iron impurities)) — mineral

Amethyst (Quartz variety)

Amethyst - SiO2 (Silicon Dioxide with Iron impurities)

Emerald (Faceted Gemstone) (Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)) — mineral

Emerald (Faceted Gemstone)

Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)

Sunstone (Oligoclase (Plagioclase Feldspar), (Na,Ca)(Si,Al)4O8) — mineral

Sunstone

Oligoclase (Plagioclase Feldspar), (Na,Ca)(Si,Al)4O8