Rock Identifier

Category

Metamorphic Or Sedimentary Depending On Local Grade

Browse metamorphic or sedimentary depending on local grade specimens identified by the Rock Identifier community.

Pink Granite (Phaneritic Felsic Igneous Rock (composed primarily of K-Feldspar, Quartz, and Mica)) — igneous

Pink Granite

Phaneritic Felsic Igneous Rock (composed primarily of K-Feldspar, Quartz, and Mica)

Massive Quartz (Silicon Dioxide (SiO2)) — mineral

Massive Quartz

Silicon Dioxide (SiO2)

Black Tourmaline in Quartz Matrix (Schorl (NaFe3Al6(BO3)3Si6O18(OH)4) with Quartz (SiO2)) — mineral

Black Tourmaline in Quartz Matrix

Schorl (NaFe3Al6(BO3)3Si6O18(OH)4) with Quartz (SiO2)

Diorite (Phaneritic Intermediate Igneous Rock) — igneous

Diorite

Phaneritic Intermediate Igneous Rock

Kunzite (Spodumene (LiAlSi2O6)) — mineral

Kunzite

Spodumene (LiAlSi2O6)

Titanium-coated Metal Cube (Man-made Fidget Toy) (Titanium-anodized or electroplated alloy (e.g., Ti-coated Zinc or Aluminum)) — Mineral alternative / Synthetic

Titanium-coated Metal Cube (Man-made Fidget Toy)

Titanium-anodized or electroplated alloy (e.g., Ti-coated Zinc or Aluminum)

Mineral alternative / Synthetic

Basalt with Peridotite (Olivine) Xenolith (Olivine-rich Peridotite (Dunite) xenolith in Vesicular Basalt; chemical formula (Mg,Fe)2SiO4) — igneous

Basalt with Peridotite (Olivine) Xenolith

Olivine-rich Peridotite (Dunite) xenolith in Vesicular Basalt; chemical formula (Mg,Fe)2SiO4

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

Diamond

Diamond (pure Carbon, C)

Vesicular Basalt (or Porphyritic Scoria) (Vesicular Basalt) — igneous

Vesicular Basalt (or Porphyritic Scoria)

Vesicular Basalt

Milky Quartz with Iron Staining (Silicon Dioxide (SiO2)) — mineral

Milky Quartz with Iron Staining

Silicon Dioxide (SiO2)

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

Rose Quartz

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

Amethyst (Silicon Dioxide (SiO2) containing Iron impurities) — mineral

Amethyst

Silicon Dioxide (SiO2) containing Iron impurities

Peridot (Olivine) (Olivine, (Mg, Fe)2SiO4) — mineral

Peridot (Olivine)

Olivine, (Mg, Fe)2SiO4

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

Lepidolite on Matrix

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

Orca Agate (Chalcedony (Microcrystalline Quartz, SiO2)) — mineral

Orca Agate

Chalcedony (Microcrystalline Quartz, SiO2)

Diamond (Diamond (C)) — mineral

Diamond

Diamond (C)

Carnelian (a variety of Chalcedony) (SiO2 (Silicon Dioxide with Iron Oxide impurities)) — mineral

Carnelian (a variety of Chalcedony)

SiO2 (Silicon Dioxide with Iron Oxide impurities)

Desert Rose (Baryte or Gypsum Rose) (Baryte (BaSO4) or Gypsum (CaSO4·2H2O)) — mineral

Desert Rose (Baryte or Gypsum Rose)

Baryte (BaSO4) or Gypsum (CaSO4·2H2O)

Quartz with Iron Staining (Silicon Dioxide (SiO2)) — mineral

Quartz with Iron Staining

Silicon Dioxide (SiO2)

Granite (Granite (composed primarily of Quartz, Feldspar, and Mica)) — igneous

Granite

Granite (composed primarily of Quartz, Feldspar, and Mica)

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

Green Moonstone (Garnierite) (Nickel-bearing Magnesium Silicate (often a mix of Serpentine and Talc/Chlorite groups)) — mineral

Green Moonstone (Garnierite)

Nickel-bearing Magnesium Silicate (often a mix of Serpentine and Talc/Chlorite groups)

Blue Slag Glass (Amorphous Silica (Byproduct of smelting)) — Antropogenic (Man-made)

Blue Slag Glass

Amorphous Silica (Byproduct of smelting)

Antropogenic (Man-made)

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

Milky Quartz

Crystalline Silicon Dioxide (SiO2)

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

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Lavender Agate / Chalcedony Sphere (Agate (Microcrystalline Quartz) - SiO2) — mineral

Lavender Agate / Chalcedony Sphere

Agate (Microcrystalline Quartz) - SiO2

Diorite (Dalmatian Stone variant) (Phaneritic Plutonic Igneous Rock (Medium to Fine-grained Diorite)) — igneous

Diorite (Dalmatian Stone variant)

Phaneritic Plutonic Igneous Rock (Medium to Fine-grained Diorite)

Black Onyx (Silicon dioxide (SiO2) - Chalcedony variety) — mineral

Black Onyx

Silicon dioxide (SiO2) - Chalcedony variety

Gold Nugget (Native Gold (Au)) — mineral

Gold Nugget

Native Gold (Au)

Pink Granite (Phaneritic Acidic Igneous Rock (primarily SiO2, Al2O3, K2O)) — igneous

Pink Granite

Phaneritic Acidic Igneous Rock (primarily SiO2, Al2O3, K2O)

Copper Bullion Round (Native Copper (refined), Cu) — mineral

Copper Bullion Round

Native Copper (refined), Cu

Honey Calcite (Orange Onyx) (Calcium Carbonate (CaCO3)) — mineral

Honey Calcite (Orange Onyx)

Calcium Carbonate (CaCO3)

Banded Calcite (often sold as Onyx Marble) (Calcium Carbonate (CaCO3)) — mineral

Banded Calcite (often sold as Onyx Marble)

Calcium Carbonate (CaCO3)

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

Rough Diamond

Diamond (pure carbon, C)

Peridot (Olivine ((Mg, Fe)2SiO4)) — Mineral

Peridot

Olivine ((Mg, Fe)2SiO4)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Amazonite (Microcline (KAlSi3O8) with lead impurities) — mineral

Amazonite

Microcline (KAlSi3O8) with lead impurities

Eudialyte in Matrix (Na15Ca6Fe3Zr3Si26O72(OH,Cl,H2O)3) — mineral

Eudialyte in Matrix

Na15Ca6Fe3Zr3Si26O72(OH,Cl,H2O)3

Fluorite (Green Fluorite on Host Rock) (Fluorite (Calcium Fluoride, CaF2)) — mineral

Fluorite (Green Fluorite on Host Rock)

Fluorite (Calcium Fluoride, CaF2)

Quartz (specifically Milky or Clear Chunk) (Silicon Dioxide (SiO2)) — mineral

Quartz (specifically Milky or Clear Chunk)

Silicon Dioxide (SiO2)

Quartz Vein Rock (Quartz (Silicon Dioxide, SiO2)) — igneous

Quartz Vein Rock

Quartz (Silicon Dioxide, SiO2)

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

Quartz (Milky Quartz vein fragment)

Silicon Dioxide (SiO2)