Rock Identifier

Category

Mineral (Occurring As A Rolled Clast)

Browse mineral (occurring as a rolled clast) specimens identified by the Rock Identifier community.

Amethyst (Amethyst is a variety of Quartz (SiO₂)) — Mineral

Amethyst

Amethyst is a variety of Quartz (SiO₂)

Sodalite (Na8(Al6Si6O24)Cl2) — mineral

Sodalite

Na8(Al6Si6O24)Cl2

Kidney Stone (Calcium Oxalate (CaC2O4·nH2O)) — mineral

Kidney Stone

Calcium Oxalate (CaC2O4·nH2O)

Note: Image shows a biological specimen (Rat), not a rock. Representative geological equivalent: Galena (due to lead-grey colors in fur). (Galena (PbS)) — mineral

Note: Image shows a biological specimen (Rat), not a rock. Representative geological equivalent: Galena (due to lead-grey colors in fur).

Galena (PbS)

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

Milky Quartz Mineral

Quartz (Silicon Dioxide, SiO2)

Sodalite (Sodalite (Na8Al6Si6O24Cl2)) — mineral

Sodalite

Sodalite (Na8Al6Si6O24Cl2)

Spessartine Garnet (Manganese aluminum silicate (Mn2+3Al2(SiO4)3)) — mineral

Spessartine Garnet

Manganese aluminum silicate (Mn2+3Al2(SiO4)3)

Jasper Conglomerate (Puddingstone) (Siliceous Conglomerate (Quartz and Jasper clasts in a fine-grained matrix)) — sedimentary

Jasper Conglomerate (Puddingstone)

Siliceous Conglomerate (Quartz and Jasper clasts in a fine-grained matrix)

Ferruginous Quartz (Iron-Stained Quartz) (Silicon Dioxide (SiO2) with Iron Oxide inclusions) — mineral

Ferruginous Quartz (Iron-Stained Quartz)

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Azurite with Malachite and Limonite (Azurite Cu3(CO3)2(OH)2 / Malachite Cu2CO3(OH)2) — mineral

Azurite with Malachite and Limonite

Azurite Cu3(CO3)2(OH)2 / Malachite Cu2CO3(OH)2

Sandstone with Iron Oxide (Limonite/Hematite) (Ferruginous Sandstone (SiO2 with FeO(OH)·nH2O)) — sedimentary

Sandstone with Iron Oxide (Limonite/Hematite)

Ferruginous Sandstone (SiO2 with FeO(OH)·nH2O)

Epidote (Epidote Group (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))) — metamorphic

Epidote

Epidote Group (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))

Peridot (Olivine (Magnesium Iron Silicate), (Mg, Fe)2SiO4) — mineral

Peridot

Olivine (Magnesium Iron Silicate), (Mg, Fe)2SiO4

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

Quartz Druze on Matrix

Silicon Dioxide (SiO2)

Granite (Granite) — Igneous

Granite

Granite

Fluorite Tower (Fluorite (Calcium Fluoride - CaF2)) — mineral

Fluorite Tower

Fluorite (Calcium Fluoride - CaF2)

Citrine (Crystalline Quartz (SiO2) with iron impurities) — mineral

Citrine

Crystalline Quartz (SiO2) with iron impurities

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

Rose Quartz

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

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Garnet (Almandine-Pyrope group, X3Y2(SiO4)3) — mineral

Garnet

Almandine-Pyrope group, X3Y2(SiO4)3

Rose Quartz Chips (Quartz (Silicon Dioxide - SiO2)) — mineral

Rose Quartz Chips

Quartz (Silicon Dioxide - SiO2)

General Rock and Mineral Collection (Center: Angelite / Blue Anhydrite) (Anhydrite (Calcium Sulfate, CaSO4)) — Mineral

General Rock and Mineral Collection (Center: Angelite / Blue Anhydrite)

Anhydrite (Calcium Sulfate, CaSO4)

Jasper or Agate with Chlorite Inclusions (Silicon Dioxide (SiO2) with Chlorite group minerals) — sedimentary

Jasper or Agate with Chlorite Inclusions

Silicon Dioxide (SiO2) with Chlorite group minerals

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

Chert (Nodule)

Microcrystalline Quartz (SiO2)

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

Fluorite (Blue)

Calcium Fluoride (CaF2)

Limonite (Ironstone Concretion) (Limonite (Hydrous Ferric Oxides mixed with Goethite)) — sedimentary

Limonite (Ironstone Concretion)

Limonite (Hydrous Ferric Oxides mixed with Goethite)

Sulfur (Sulfur (S8)) — mineral

Sulfur

Sulfur (S8)

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

Lepidolite (Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)) — Mineral

Lepidolite

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)

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

Quartz (Druzy)

Silicon Dioxide (SiO2)

Fulgurite (Fulgurite (Lechatelierite)) — metamorphic

Fulgurite

Fulgurite (Lechatelierite)

Asphalt (Road Aggregate) (Bituminous conglomerate) — sedimentary

Asphalt (Road Aggregate)

Bituminous conglomerate

Botryoidal Hemimorphite (Hemimorphite (Zn4Si2O7(OH)2·H2O)) — mineral

Botryoidal Hemimorphite

Hemimorphite (Zn4Si2O7(OH)2·H2O)

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

Nephrite Jade

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

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

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

Limonite

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

Limonite (Iron Stone/Iron Ore) (FeO(OH)·nH2O (Hydrous ferric oxide)) — mineral

Limonite (Iron Stone/Iron Ore)

FeO(OH)·nH2O (Hydrous ferric oxide)

Aventurine (Tan/Cream colored) (Quartz (SiO2) with mineral inclusions) — mineral

Aventurine (Tan/Cream colored)

Quartz (SiO2) with mineral inclusions

Petrified Wood (Silicified wood (principally SiO2)) — sedimentary

Petrified Wood

Silicified wood (principally SiO2)

Quartz-bearing Ore (likely Gold-bearing Quartz) (Quartz (SiO2) with potential sulfide mineralization (Pyrite/Arsenopyrite)) — mineral/hydrothermal

Quartz-bearing Ore (likely Gold-bearing Quartz)

Quartz (SiO2) with potential sulfide mineralization (Pyrite/Arsenopyrite)

mineral/hydrothermal

Sandstone (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone

Clastic sedimentary rock (primarily SiO2)