Metamorphic Rock (Specifically A Rock Composed Of Minerals)

Banded Gneiss

Gneiss (Foliated Metamorphic Rock)

Slate

Metamorphic Rock (Fine-grained)

Pink Granite

Granite (composed primarily of Quartz, K-Feldspar, and Plagioclase)

Red Sandstone

Arenite (Iron-rich)

Greenstone / Greenschist

Greenschist facies metamorphic rock (composed primarily of chlorite, actinolite, and epidote)

Bauxite

Bauxite (Al2O3·2H2O mixed with iron oxides)

Green Schist

Greenschist (composed of Chlorite, Actinolite, and Epidote)

Quartz (Milky or Cloudy)

Silicon Dioxide (SiO2)

Serpentine

(Mg,Fe)3Si2O5(OH)4

Nephrite Jade

Nephrite

Green Aventurine

Silicon Dioxide (Quartz variety with Fuchsite inclusions - SiO2)

Sandstone

Arenite (Sedimentary Rock)

Foliated amphibolite (likely augen or spotted amphibolite)

Amphibolite, composed chiefly of hornblende and plagioclase; exact identification requires close examination

Likely serpentinite pebble

Serpentinite, composed mainly of serpentine-group minerals (e.g., antigorite or lizardite); identification from the image is uncertain

Granite Pebble

Granite (Plutonic Igneous Rock)

Mica-rich schist (probable)

Mica schist, composed mainly of mica minerals with quartz and possibly feldspar

Chlorite-rich schist (probable greenschist)

Chlorite–quartz–mica schist; commonly derived from basalt or shale under greenschist-facies metamorphism

Greenstone / Serpentinite

Serpentinite (composed primarily of serpentine minerals: Mg3Si2O5(OH)4)

River Rocks and Pebbles

Mixed Silica-rich Sediments (SiO2 based)

Red Sandstone

Arenite (SiO2 with Fe2O3)

Quartz-rich metamorphic rock, likely milky quartz or quartzite

Quartz (SiO₂); possibly quartzite composed predominantly of recrystallized quartz

Blue Quartzite

Quartzite (specifically a variety enriched with blue-coloring minerals)

Serpentinite

Serpentinite, a rock composed mainly of serpentine-group minerals (approximately Mg₃Si₂O₅(OH)₄)

Dark speckled granite pebble

Granite, a quartz–feldspar–mica plutonic rock

Likely serpentinite (greenstone pebble)

Serpentinite, composed mainly of serpentine-group minerals (e.g., lizardite, chrysotile, or antigorite)

Petrified Wood

Silicified Wood (SiO2)

Inukshuk Rock Sculpture (composed of Granite, Slate, and Amethyst)

Silicon Dioxide (Amethyst portion, SiO2) with mixed silicate rock assemblage

Granite Pebble

Phaneritic intrusive igneous rock

Polished red jasper pendant

Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored mainly by iron oxides

Likely serpentinite

Serpentinite, composed mainly of serpentine-group minerals (such as antigorite or chrysotile)

Serpentinite (often called Jade or Nephrite substitute)

Serpentinite (composed primarily of Antigorite, Lizardite, or Chrysotile)

Gneiss

Metamorphic Gneiss

Pink Granite

Phaneritic Felsic Intrusive Igneous Rock

Banded Agate

Chalcedony / Silicon Dioxide (SiO2)

Marble

Metamorphic Limestone (CaCO3)

Granite

Granite (Felsic Plutonic Rock)

Gneiss

Gneiss (Metamorphic rock composed primarily of quartz, feldspar, and mica)

Tumbled brown quartzite pebble

Quartzite, composed predominantly of microcrystalline quartz (SiO₂)

Chakra Crystal Bracelet

Mixed Mineral Assortment

Serpentinite

Serpentinite (composed primarily of Serpentine minerals: Mg3Si2O5(OH)4)

Moonstone

Adularia (Potassium Aluminum Silicate, KAlSi3O8)

Dark, iron-stained rock; exact identification uncertain

Possibly a fine-grained mafic igneous rock (basalt or diabase); image alone is insufficient for a reliable species-level identification