Rock Identifier

Category

Igneous Or Metamorphic

Browse igneous or metamorphic specimens identified by the Rock Identifier community.

Learn about Igneous Or Metamorphic in the encyclopedia

Carbonatite

Cordierite Hornfels

Cordierite Hornfels

Metabasalt

Eulysite

Migmatite

Anthracite

Metaquartzite

Slate

Marble

Hornfels

Metarhyolite

Metagabbro

Titanium Quartz (Rough) (Titanium-included Silicon Dioxide (SiO2 + Ti)) — mineral

Titanium Quartz (Rough)

Titanium-included Silicon Dioxide (SiO2 + Ti)

Magnetite (Magnetite (Fe3O4)) — mineral

Magnetite

Magnetite (Fe3O4)

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

Yellow Quartz Pebble

Silicon Dioxide (SiO2)

Yellow Quartz Pebble (SiO2 (Silicon Dioxide) with Iron Impurities) — mineral

Yellow Quartz Pebble

SiO2 (Silicon Dioxide) with Iron Impurities

Weathered quartz-rich pebble (Likely quartz-bearing granite or granitic gneiss; exact identification requires testing) — igneous

Weathered quartz-rich pebble

Likely quartz-bearing granite or granitic gneiss; exact identification requires testing

Smoky Quartz (Tumbled) (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz (Tumbled)

Silicon Dioxide (SiO2)

Tumbled milky quartz (Quartz (silicon dioxide, SiO₂)) — mineral

Tumbled milky quartz

Quartz (silicon dioxide, SiO₂)

White quartz-rich pebble (Quartz (SiO₂), possibly milky quartz or quartzite) — mineral

White quartz-rich pebble

Quartz (SiO₂), possibly milky quartz or quartzite

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Blue apatite crystals (Apatite group, commonly fluorapatite (Ca₅(PO₄)₃F)) — mineral

Blue apatite crystals

Apatite group, commonly fluorapatite (Ca₅(PO₄)₃F)

Clear quartz crystal (Quartz (silicon dioxide, SiO₂)) — mineral

Clear quartz crystal

Quartz (silicon dioxide, SiO₂)

Milky quartz (likely quartz-rich fragment) (Quartz, silicon dioxide (SiO₂)) — mineral

Milky quartz (likely quartz-rich fragment)

Quartz, silicon dioxide (SiO₂)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Citrine Quartz (Raw) (Silicon Dioxide (SiO2)) — mineral

Citrine Quartz (Raw)

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

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

Smoky Quartz

Silicon Dioxide (SiO2) with aluminum impurities

Quartz (likely Rose Quartz or Milky Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (likely Rose Quartz or Milky Quartz)

Silicon Dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Citrine Quartz (Silicon Dioxide (SiO2)) — mineral

Citrine Quartz

Silicon Dioxide (SiO2)

Moonstone (Potassium Aluminum Silicate (KAlSi3O8) with inclusions of Albite) — mineral

Moonstone

Potassium Aluminum Silicate (KAlSi3O8) with inclusions of Albite

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Peach Moonstone (Potassium Aluminum Silicate (KAlSi3O8) with inclusions) — mineral

Peach Moonstone

Potassium Aluminum Silicate (KAlSi3O8) with inclusions

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Smoky Quartz with possible inclusion (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz with possible inclusion

Silicon Dioxide (SiO2)

Milky Quartz with Algae/Chlorite (Silicon Dioxide (SiO2)) — mineral

Milky Quartz with Algae/Chlorite

Silicon Dioxide (SiO2)

Quartz (Iron-stained) (Silicon Dioxide (SiO2)) — mineral

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Citrine Quartz (Silicon Dioxide (SiO2)) — mineral

Citrine Quartz

Silicon Dioxide (SiO2)

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Black Tourmaline (Schorl (Sodium iron aluminum borosilicate), NaFe3Al6(BO3)3Si6O18(OH)4) — mineral

Black Tourmaline

Schorl (Sodium iron aluminum borosilicate), NaFe3Al6(BO3)3Si6O18(OH)4

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Moonstone (Orthoclase Feldspar (formula: (K,Na)AlSi3O8)) — mineral

Moonstone

Orthoclase Feldspar (formula: (K,Na)AlSi3O8)

Yellow Quartz (Citrine or Iron-Stained Quartz) (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz (Citrine or Iron-Stained Quartz)

Silicon Dioxide (SiO2)

Moonstone (Green Moonstone / Garnierite) (Potassium Aluminum Silicate (KAlSi3O8) with inclusions of Garnierite) — mineral

Moonstone (Green Moonstone / Garnierite)

Potassium Aluminum Silicate (KAlSi3O8) with inclusions of Garnierite

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Moonstone (Orthoclase Feldspar ((K,Na)AlSi3O8)) — mineral

Moonstone

Orthoclase Feldspar ((K,Na)AlSi3O8)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Amethyst (Purple), Sulfur (Yellow), and Blue Apatite (SiO2 (Quartz), S (Native Sulfur), Ca5(PO4)3(F,Cl,OH) (Apatite Group)) — mineral

Amethyst (Purple), Sulfur (Yellow), and Blue Apatite

SiO2 (Quartz), S (Native Sulfur), Ca5(PO4)3(F,Cl,OH) (Apatite Group)

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

Quartz Vein / Milky Quartz

Silicon Dioxide (SiO2)

Citrine (Heat-treated or Natural Quartz) (Silicon Dioxide (SiO2)) — mineral

Citrine (Heat-treated or Natural Quartz)

Silicon Dioxide (SiO2)

Yellow Quartz (Citrine or Quartzite Pebble) (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz (Citrine or Quartzite Pebble)

Silicon Dioxide (SiO2)