Sedimentary Rock (Metamorphosed)

White quartz-rich rock, likely milky quartz or quartzite

Quartz (SiO₂); possibly quartzite, a metamorphosed quartz sandstone

Quartzite Cobble

Metamorphosed Sandstone (SiO2)

Quartzite with Chlorite/Epidote

Metamorphosed Quartzite (SiO2)

Greenstone (or Greywacke/Metasediment Pebble)

Metamorphosed Mafic Rock / Chlorite Schist

Slate with Fossiliferous Impressions

Metamorphosed Argillaceous Rock (Fossiliferous Slate)

Greenstone (Prase / Nephrite / Serpentine mix)

Metamorphosed ultramafic rock / greenstone facies

Greenstone

Greenschist (metamorphosed mafic igneous rock)

Quartzite (Iron-stained)

Metamorphosed Quartz-rich Rock (SiO2)

River Stone (likely Quartzite or Sandstone)

Metamorphosed Quartz-rich Rock (SiO2)

Greenstone / Metabasalt

Metamorphosed Mafic Rock (Greenschist facies)

Marble

Metamorphosed Limestone (CaCO3)

Quartzite River Rock

Metamorphosed Sandstone (SiO2)

Quartzite with inclusions

Metamorphosed quartz sandstone

Quartzite with Quartz Vein

Metamorphosed sandstone (SiO2)

Greenstone (likely metamorphosed mafic rock)

Probable chlorite–actinolite–epidote-rich metabasalt; exact identification requires testing

Iron-stained quartz-rich rock (probable quartzite or silicified breccia)

Quartz-dominant aggregate, chiefly SiO₂, with iron oxides/hydroxides

Tumbled brown river stone

Likely weathered iron-rich basalt, greenstone, or other mafic metamorphic rock; exact identification requires testing

River Stone (likely Quartzite or Sandstone)

Metamorphosed Quartz-rich Rock (SiO2)

Quartzite with Iron Inclusions

Metamorphosed Quartz-rich Rock (SiO2)

Greenstone (Greenstone River Pebble)

Greenschist (metamorphosed mafic igneous rock)

River Pebble (Likely Quartzite or Gneiss)

Metamorphosed Silicate Rock (primarily SiO2)

Quartzite with inclusions

Metamorphosed Quartz-rich Rock (SiO2)

Greenstone

Greenschist (metamorphosed mafic igneous rock)

Quartzite

Metamorphosed Quartz Sandstone

Limestone

Calcium Carbonate (CaCO3)

Rounded quartz-rich cobble, likely sandstone or quartzite

Quartz-dominated siliciclastic rock; possibly quartz arenite (sandstone) or quartzite, mainly SiO₂

Quartzite Pebble

Quartzite (SiO2 based)

Likely graphite-rich schist or graphite-bearing metamorphic rock

Graphite (C) in a mica/quartz-rich matrix; exact rock name requires testing

Conglomerate (polymictic, possibly metamorphosed)

Polymictic conglomerate; clasts cemented in a dark, likely quartz-rich matrix

Banded metamorphic rock, likely gneiss or schist

Foliated quartz–feldspar–mica rock; exact identification requires a closer view or mineral testing

Weathered green metamorphic rock, possibly serpentinite or greenstone

Likely serpentinite (serpentine-group minerals) or chlorite/epidote-rich greenschist; exact identification requires testing

Weathered granite or granitic gneiss fragment

Granite/granitic gneiss; chiefly quartz, feldspar, and mica

Quartzite with Schist layers

Metamorphosed Quartz-rich Rock (Mixed Schist/Quartzite)

Marble

Recrystallized Calcite (CaCO3) Rock

Marble

Metamorphosed Limestone (CaCO3)

Quartzite

Metamorphosed Quartz Sandstone

Dyed Quartzite

Metamorphosed Quartz (SiO2) with synthetic pigment

Greenstone / Epidosite

Metamorphosed Mafic Igneous Rock (Epidote-Chlorite group)

Greenstone (Epidote/Chlorite-rich Metabasalt)

Greenschist / Epidosite (Ca2(Al,Fe)3(SiO4)3(OH))

Biotite-bearing granite or granitic gneiss

Quartz–feldspar–biotite granitoid; exact identification requires testing

Quartzite

Metamorphosed Sandstone (SiO2)

Greenstone (likely greenschist)

Chlorite–actinolite–epidote-rich metabasalt; mineral proportions cannot be confirmed from the photo