Mineral And Metamorphic Rock

Gneiss

Metamorphic Gneiss

Quartz vein in host rock

Milky quartz (SiO₂) with likely metamorphic country rock, possibly gneiss or schist

Schist

Mica Schist (Metamorphic Rock)

Schist

Schist (Crystalline metamorphic rock)

Tumbled milky quartz pebble

Quartz (silicon dioxide, SiO₂)

Green Aventurine

Silicon Dioxide (SiO2) with inclusions of Fuchsite mica

Yellow Quartz Pebble

Silicon Dioxide (SiO2)

Orthoclase Feldspar

KAlSi3O8 (Potassium Aluminum Silicate)

Small weathered mineral/rock fragment

Unidentified; likely quartz-rich material, possibly quartzite or feldspar-bearing rock

Milky quartz

Quartz (silicon dioxide, SiO₂)

Banded Gneiss

Gneiss (Felsic to Mafic Metamorphic Rock)

Grey River Stone (Gneiss/Schist mix)

Foliated Metamorphic Rock (variable mineral formula)

Milky quartz

Quartz (silicon dioxide, SiO₂)

Quartz-veined metamorphic rock, likely greenschist or altered metavolcanic

Chlorite–actinolite–epidote-bearing metavolcanic rock with quartz veins; exact identification requires testing

Small tumbled pebble (likely quartz or feldspar)

Indeterminate; probable quartz (SiO₂) or feldspar

Milky quartz fragment

Quartz (silicon dioxide, SiO₂)

Pyrite in Quartz Matrix

Iron Sulfide (FeS2) embedded in Silicon Dioxide (SiO2)

Pyrite-bearing quartz vein rock

Pyrite (FeS₂) with quartz (SiO₂), likely in a schistose or altered host rock

Tumbled quartz-rich stone (likely milky quartz/quartzite)

Quartz (SiO₂), possibly quartzite with minor iron-oxide staining

Greenstone pebble (likely altered basalt or serpentine)

Greenschist-facies mafic rock; commonly chlorite–actinolite–epidote ± serpentine

Milky quartz

Quartz (silicon dioxide, SiO₂)

Rounded quartz pebble

Quartz (silicon dioxide, SiO₂)

Muscovite Mica

Muscovite / KAl2(AlSi3O10)(OH)2

Quartz fragment (likely milky quartz)

Quartz, silicon dioxide (SiO₂)

Rough amber-colored quartz or calcite fragment

Likely quartz (SiO₂) or calcite (CaCO₃); exact identification requires testing

Banded Gneiss

Gneiss (Metamorphic Rock)

Gneiss

Gneissic Metamorphic Rock

Raw milky quartz

Quartz (SiO₂), likely iron-stained quartz

Milky quartz (likely quartzite fragment)

Quartz, silicon dioxide (SiO₂)

Wishing Stone (Quartz Vein in Greywacke / Basalt)

Quartz vein in host rock (e.g. Meta-basalt or Greywacke)

Epidote-bearing Rock

Epidote / Silicate mineral aggregate

Tumbled milky quartz pebble

Quartz (silicon dioxide, SiO₂), cryptocrystalline to microcrystalline variety

Weathered quartz-rich metamorphic rock, likely gneiss or quartzite

Quartz (SiO₂)-bearing gneiss; exact identification requires a fresh surface and tests

Pyrite

Iron Disulfide (FeS2)

Tumbled quartz-rich pebble, likely milky quartz

Quartz (silicon dioxide, SiO₂), possibly iron-stained milky quartz

Milky quartz (likely iron-stained quartz)

Quartz, silicon dioxide (SiO₂)

Blue-gray quartz-rich rock, possibly blue aventurine or sodalite-bearing stone

Probable quartz–feldspar aggregate; exact identification requires testing

Sandstone (Micaceous)

Clastic Sedimentary Rock (primarily SiO2 with Mica)

Foliated metamorphic rock, likely mica schist

Mica schist, mainly quartz–feldspar–mica assemblage

Quartz-rich rock, likely milky quartz with iron staining

Quartz (SiO₂), possibly a quartz vein fragment

Weathered gray metamorphic rock, likely gneiss or schist

Quartz–feldspar–mica assemblage; exact identification requires a fresh surface or testing

Agate

Agate (Silicon Dioxide, SiO2)