Sedimentary Or Metamorphic (Low Grade)

Rhodochrosite

Manganese Carbonate (MnCO3)

Weathered mafic rock, likely basalt or greenstone

Fine-grained basaltic rock; possibly altered basalt (metabasalt/greenstone)

Almandine Garnet

Almandine (Fe3Al2(SiO4)3)

Tumbled pale green calcite

Calcite (CaCO₃)

Marble

Recrystallized Limestone (CaCO3)

Red Scoria (Lava Rock)

Scoria (highly vesicular basaltic/andesitic rock)

Garnet Schist or Garnet-bearing Quartzite

Metamorphic rock containing Almandine Garnet (Fe3Al2(SiO4)3) and Quartz (SiO2)

Quartz–mica metamorphic rock, likely schist

Quartz–muscovite/biotite schist; predominantly SiO₂ quartz with phyllosilicate micas

Magnetite (Charnockite Regional Variation)

Magnetite (Fe3O4)

Blue Dumortierite Quartz

Dumortierite Inclusions in Quartz (SiO2 with Al7(BO3)(SiO4)3O3)

Gneiss

Gneiss

Kyanite

Kyanite (Al2SiO5)

Magnetite / Iron Ore

Magnetite (Fe3O4)

Milky Quartz

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Possible graphite-bearing schist

Graphitic mica schist; predominantly quartz, mica, and graphite

Fuchsite

Chromium-bearing Muscovite [K(Al,Cr)2(AlSi3O10)(OH)2]

Schist/Phyllite

Metamorphic Schist (Chlorite Schist variety)

Banded Gneiss

Gneiss (High-grade metamorphic rock typically composed of Quartz, Feldspar, and Mica)

Gneiss

Gneiss

Gneiss (Metamorphic Rock)

Gneiss

Gneiss (specifically a Granitic Gneiss)

Gneiss (typically composed of Quartz, Feldspar, and Mica/Amphiboles)

Gneiss Pebble

Gneiss

Basalt

Basalt (Mafic volcanic rock)

Clear Quartz

Silicon Dioxide (SiO2)

Gneiss

Foliated Metamorphic Rock (Gneiss)

Jade

There are two distinct minerals commonly known as Jade: Jadeite (NaAlSi2O6) and Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2). Based on the appearance, these spheres are likely Nephrite.

Anthracite Coal

Anthracite (Carbon-rich metamorphic coal)

Pink Gneiss / Pink Granite Gneiss

Felsic Gneiss (dominated by Orthoclase Feldspar and Quartz)

Granitic Gneiss

Gneiss (Complex silicate composition)

Gneiss

Gneiss

Clear Quartz

Silicon Dioxide (SiO2)

Pyrite

Iron Sulfide (FeS2)

Calcite (Optical Calcite / Iceland Spar)

Calcium Carbonate (CaCO3)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Quartzite

Metamorphic Quartzite (SiO2)

Carved quartz skull, likely smoky quartz or gray chalcedony

Silicon dioxide (SiO₂), quartz or microcrystalline quartz

Jasper Conglomerate (Puddingstone)

Siliceous Conglomerate (Quartz and Jasper clasts in a fine-grained matrix)

Banded gneiss pebble

Gneiss, likely quartz–feldspar–mica gneiss

Scoria

Scoria (vesicular basaltic rock)

Garnet in Schist (Garnetiferous Micaceous Schist)

Almandine Garnet, Fe3Al2(SiO4)3

Gneiss (specifically Biotite Gneiss)

Gneiss (high-grade metamorphic rock primarily composed of Silicates)