Rock Identifier

Category

Mineral (Specifically A Mineraloid)

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

Dyed Pink Agate (Silicon Dioxide (SiO2) - variety Chalcedony) — mineral

Dyed Pink Agate

Silicon Dioxide (SiO2) - variety Chalcedony

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

Amethyst

Amethyst (Silicon Dioxide, SiO2)

Rhodochrosite (Manganese carbonate (MnCO3)) — mineral

Rhodochrosite

Manganese carbonate (MnCO3)

Banded Calcite (Mexican Onyx) (Calcite (Calcium Carbonate, CaCO3)) — mineral

Banded Calcite (Mexican Onyx)

Calcite (Calcium Carbonate, CaCO3)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

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

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

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

Quartz River Pebble

Quartz (Silicon Dioxide, SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Quartz (Chert/Chalcedony Variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Chert/Chalcedony Variety)

Silicon Dioxide (SiO2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Muscovite Mica (Muscovite (KAl2(AlSi3O10)(OH)2)) — mineral

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(OH)2)

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

Quartz (Milky Quartz Pebble)

Silicon Dioxide (SiO2)

Carnelian Agate (Silicon Dioxide (SiO2) - Chalcedony containing Iron Oxide impurities) — mineral

Carnelian Agate

Silicon Dioxide (SiO2) - Chalcedony containing Iron Oxide impurities

Blue Apatite (Fluorapatite (Ca5(PO4)3F)) — mineral

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Milky Quartz/Clear Quartz Cluster (Silicon Dioxide (SiO2)) — mineral

Milky Quartz/Clear Quartz Cluster

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Banded Agate (Dyed Purple) (Agate (Variety of Chalcedony/Quartz), SiO2) — mineral

Banded Agate (Dyed Purple)

Agate (Variety of Chalcedony/Quartz), SiO2

Chrysoberyl (Cyclic Twin) (Beryllium Aluminum Oxide (BeAl2O4)) — mineral

Chrysoberyl (Cyclic Twin)

Beryllium Aluminum Oxide (BeAl2O4)

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

Quartz (Smoky/Milky Pebble)

Silicon Dioxide (SiO2)

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

Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Rose Quartz (Quartz (Silicon Dioxide with trace inclusions of dumortierite, Al7(BO3)(SiO4)3O3)) — mineral

Rose Quartz

Quartz (Silicon Dioxide with trace inclusions of dumortierite, Al7(BO3)(SiO4)3O3)

Magnetite (Iron Ore) (Magnetite (Fe3O4)) — mineral

Magnetite (Iron Ore)

Magnetite (Fe3O4)

Rose Quartz (SiO2 (Silicon Dioxide with trace inclusions)) — mineral

Rose Quartz

SiO2 (Silicon Dioxide with trace inclusions)

Muscovite Mica (with Quartz matrix) (Muscovite - KAl2(AlSi3O10)(OH)2) — mineral

Muscovite Mica (with Quartz matrix)

Muscovite - KAl2(AlSi3O10)(OH)2

Pearl (Pearl (Calcium Carbonate with organic conchiolin, CaCO3)) — mineral

Pearl

Pearl (Calcium Carbonate with organic conchiolin, CaCO3)

Yellow Banded Agate (Silicon Dioxide (SiO₂)) — mineral

Yellow Banded Agate

Silicon Dioxide (SiO₂)

Rough Diamond (Diamond (pure Carbon, C)) — mineral

Rough Diamond

Diamond (pure Carbon, C)

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

Olivine (Peridot)

Magnesium Iron Silicate (Mg,Fe)2SiO4

Smoky Quartz (Silicon Dioxide (SiO₂)) — mineral

Smoky Quartz

Silicon Dioxide (SiO₂)

Banded Calcite (Mexican Onyx) (Calcium Carbonate (CaCO3)) — mineral

Banded Calcite (Mexican Onyx)

Calcium Carbonate (CaCO3)

Selenite (Gypsum Variety) (Hydrous Calcium Sulfate (CaSO4·2H2O)) — mineral

Selenite (Gypsum Variety)

Hydrous Calcium Sulfate (CaSO4·2H2O)

Smoky Quartz (Silicon Dioxide (SiO2) with aluminum impurities) — mineral

Smoky Quartz

Silicon Dioxide (SiO2) with aluminum impurities

Pearl (Organic Mineral (CaCO3 with conchiolin)) — mineral

Pearl

Organic Mineral (CaCO3 with conchiolin)

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

Carnelian

Carnelian (Silicon Dioxide - SiO2)

Magnetite (Magnetite (Fe3O4)) — mineral

Magnetite

Magnetite (Fe3O4)

Onyx (Chalcedony (SiO2) with parallel banding) — mineral

Onyx

Chalcedony (SiO2) with parallel banding

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

Olivine (Peridot)

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

Calcite (Calcium Carbonate (CaCO3)) — mineral

Calcite

Calcium Carbonate (CaCO3)

Diamond (Diamond (pure Carbon, C)) — mineral

Diamond

Diamond (pure Carbon, C)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Arsenopyrite in Quartz Matrix (Arsenopyrite (FeAsS) with Quartz (SiO2)) — mineral

Arsenopyrite in Quartz Matrix

Arsenopyrite (FeAsS) with Quartz (SiO2)