Rock Identifier

Category

Igneous And Metamorphic

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

Learn about Igneous And Metamorphic in the encyclopedia

Carbonatite

Cordierite Hornfels

Cordierite Hornfels

Metabasalt

Eulysite

Migmatite

Anthracite

Metaquartzite

Slate

Marble

Hornfels

Metarhyolite

Metagabbro

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

White Quartz Cobble (Quartz (Silicon Dioxide, SiO2)) — mineral

White Quartz Cobble

Quartz (Silicon Dioxide, SiO2)

Gold Ore (Native Gold (Au) in Quartz or Silicate matrix) — mineral

Gold Ore

Native Gold (Au) in Quartz or Silicate matrix

Amethyst and Smoky Quartz (Tumbled) (Silicon Dioxide (SiO2) with trace impurities iron (Amethyst) and aluminum/radiation (Smoky Quartz)) — mineral

Amethyst and Smoky Quartz (Tumbled)

Silicon Dioxide (SiO2) with trace impurities iron (Amethyst) and aluminum/radiation (Smoky Quartz)

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

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Rose Quartz (Silicon Dioxide (SiO2) with traces of Titanium, Iron, or Manganese) — mineral

Rose Quartz

Silicon Dioxide (SiO2) with traces of Titanium, Iron, or Manganese

Milky quartz (likely iron-stained quartz) (Quartz, silicon dioxide (SiO₂)) — mineral

Milky quartz (likely iron-stained quartz)

Quartz, silicon dioxide (SiO₂)

Citrine Quartz (Silicon Dioxide (SiO2)) — mineral

Citrine Quartz

Silicon Dioxide (SiO2)

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

Smoky Quartz

Smoky Quartz (Silicon Dioxide - SiO2)

Calcite (Calcium Carbonate (CaCO3)) — mineral

Calcite

Calcium Carbonate (CaCO3)

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

Milky Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

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

White Quartz Pebble

Silicon Dioxide (SiO2)

Likely milky quartz pebble (Quartz (silicon dioxide, SiO₂)) — mineral

Likely milky quartz pebble

Quartz (silicon dioxide, SiO₂)

Quartz pebble (likely milky quartz) (Quartz, silicon dioxide (SiO₂)) — mineral

Quartz pebble (likely milky quartz)

Quartz, silicon dioxide (SiO₂)

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

Tumbled milky quartz pebble

Quartz (silicon dioxide, SiO₂)

Quartz-rich metallic-looking pebble (Likely quartz or quartzite; exact identification is uncertain from the blurred image) — mineral

Quartz-rich metallic-looking pebble

Likely quartz or quartzite; exact identification is uncertain from the blurred image

Tumbled quartz-rich pebble (Quartz, silicon dioxide (SiO₂), likely milky or included quartz) — mineral

Tumbled quartz-rich pebble

Quartz, silicon dioxide (SiO₂), likely milky or included quartz

Rounded quartz-rich pebble (Most likely milky quartz (SiO₂), possibly a quartzite or pale chert fragment) — mineral

Rounded quartz-rich pebble

Most likely milky quartz (SiO₂), possibly a quartzite or pale chert fragment

Likely black cabochon gemstone pendant (Uncertain; possibly black star sapphire, black spinel, or obsidian) — gemstone

Likely black cabochon gemstone pendant

Uncertain; possibly black star sapphire, black spinel, or obsidian

Weathered quartz-bearing rock, possibly iron-stained quartzite or granitic pegmatite (Indeterminate; likely quartz-rich silicate rock with iron-oxide staining (SiO₂-dominant)) — igneous

Weathered quartz-bearing rock, possibly iron-stained quartzite or granitic pegmatite

Indeterminate; likely quartz-rich silicate rock with iron-oxide staining (SiO₂-dominant)

Rounded quartz-rich pebble, possibly milky quartz (Quartz (SiO₂), provisional identification) — mineral

Rounded quartz-rich pebble, possibly milky quartz

Quartz (SiO₂), provisional identification

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

Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Citrine Quartz / Yellow Quartz Pebbles (Silicon Dioxide (SiO2)) — mineral

Citrine Quartz / Yellow Quartz Pebbles

Silicon Dioxide (SiO2)

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

White Quartz

Quartz (Silicon Dioxide, SiO2)

Likely quartz crystal fragment (Quartz (silicon dioxide, SiO₂)) — mineral

Likely quartz crystal fragment

Quartz (silicon dioxide, SiO₂)

Rainbow Hematite Ring (Iron(III) oxide (Fe2O3) with thin-film coating) — mineral

Rainbow Hematite Ring

Iron(III) oxide (Fe2O3) with thin-film coating

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

Sunstone

Aventurine Feldspar ((Ca,Na)(Al,Si)4O8)

Citrine (Silicon dioxide (SiO2)) — mineral

Citrine

Silicon dioxide (SiO2)

Quartz (Yellow/Citrine variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Yellow/Citrine variety)

Silicon Dioxide (SiO2)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Sunstone (Plagioclase feldspar (with Copper or Hematite inclusions)) — mineral

Sunstone

Plagioclase feldspar (with Copper or Hematite inclusions)

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

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Quartz on Host Rock (Silicon Dioxide (SiO2)) — mineral

Quartz on Host Rock

Silicon Dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

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

Quartz Druze on Matrix

Silicon Dioxide (SiO2)

Blue Quartz (Silicon Dioxide (SiO2) with inclusions) — mineral

Blue Quartz

Silicon Dioxide (SiO2) with inclusions

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

Quartz (Citrine variety)

Silicon Dioxide (SiO2)

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

Quartz Pebble (Grit)

Silicon Dioxide (SiO2)

Amethyst (Quartz variety) (Silicon Dioxide (SiO2)) — mineral

Amethyst (Quartz variety)

Silicon Dioxide (SiO2)

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

Quartz (Small Pebble)

Silicon Dioxide (SiO2)

Quartz Crystal (Silicon Dioxide (SiO2)) — mineral

Quartz Crystal

Silicon Dioxide (SiO2)