Metamorphic (Altered Igneous Rock)

Quartzite (River Pebble)

Recrystallized Quartz (SiO2)

Schist

Mica Schist

Glaucophane Schist (Blueschist)

Blueschist (Glaucophane-bearing schist)

Eroded Brick or Pumice-like Scoria

Vesicular Basalt / Scoria (Anthropogenic variant: Eroded Firebrick)

Riverstone (Quartzite or Siltstone cobble)

Quartzite (primarily SiO2)

Quartz (Iron-stained or Ferruginous)

Silicon Dioxide (SiO2)

Garnet

Garnet Group (e.g., Almandine Fe3Al2(SiO4)3 or Pyrope Mg3Al2(SiO4)3)

Granite (Phaneritic Igneous Rock)

Granite

Garnet (likely Pyrope or Almandine)

Garnet Group (complex nesosilicate minerals, e.g., Pyrope Mg3Al2(SiO4)3, Almandine Fe3Al2(SiO4)3, Spessartine Mn3Al2(SiO4)3, Grossular Ca3Al2(SiO4)3, Andradite Ca3Fe2(SiO4)3, Uvarovite Ca3Cr2(SiO4)3). The vivid red color in the image strongly suggests Pyrope or Almandine.

Vesicular Basalt with Epidote

Vesicular Basalt (Mg, Fe)2SiO4 with Epidote (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH))

Mica (Muscovite)

Muscovite (KAl2(AlSi3O10)(OH)2)

Magnetite (Iron Ore)

Magnetite (Fe3O4)

Quartzite

Quartzite (SiO2)

Granite Gneiss

Gneiss (High-grade Metamorphic Rock)

Muscovite (Mica)

Muscovite - KAl2(AlSi3O10)(OH)2

Serpentine

Serpentinite (Mg, Fe, Ni)3Si2O5(OH)4

Serpentine

Serpentinite (a rock composed primarily of serpentine minerals like antigorite, chrysotile, and lizardite; general formula (Mg, Fe)3Si2O5(OH)4)

Ruby Zoisite

Anyolite (Calcium aluminium silicate with Chromium/Corundum inclusions)

Basalt

Basaltic Mafic Rock

Granite

Granite (a felsic intrusive igneous rock)

Labradorite

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

Muscovite Mica

Muscovite (KAl₂(AlSi₃O₁₀)(F,OH)₂))

Basalt with Quartz Veins

Mafic Igneous Rock (primarily Plagioclase and Pyroxene) with SiO2 inclusions

Pink Granite

Phaneritic Felsic Igneous Rock (Granite, rich in Potassium Feldspar)

Green Calcite

Calcium Carbonate (CaCO3)

Green Aventurine

Silicon Dioxide (SiO2 with Fuchsite inclusions)

Basalt with Quartz/Quartzite Veins

Aphanitic Mafic Volcanic Rock with Siliceous Infillings

Mica Schist

Mica Schist (primarily Muscovite and Quartz)

Banded Agate

Chalcedony / Silicon Dioxide (SiO2)

Serpentinite

Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4

Basalt with Quartz Veins

Aphanitic Mafic Igneous Rock (Main body: SiO2, Fe, Mg rich)

Citrine Quartz

Silicon Dioxide (SiO2)

Yellow Quartz (Citrine/Yellow Jasper mix)

Silicon Dioxide (SiO2)

River Stone (River Pebble)

River Stone (Composition: primarily Quartzite, Chalcedony, and silicate minerals)

Quartz (Clear or Cloudy)

Silicon Dioxide (SiO2)

Quartz (Small Fragment)

Silicon Dioxide (SiO2)

Smoky Quartz

Silicon Dioxide (SiO2)

Sodalite

Sodalite Na8(Al6Si6O24)Cl2

Smoky Quartz

Silicon Dioxide (SiO2)

Chalcopyrite

Chalcopyrite (CuFeS2)

Pyrite in Quartzite/Graphite Matrix

Iron Sulfide (FeS2)

Smoky Quartz

Silicon Dioxide (SiO2)