Igneous And Metamorphic

Quartzite (River Pebble)

Metamorphic Quartz (SiO2)

Quartzite Pebble

Metamorphic Quartzite (SiO2)

Quartzite with Sandstone/Iron staining

Metamorphic Quartzite (SiO2)

Gneiss (specifically Granitic Gneiss)

Gneissic Metamorphic Rock

Slate

Foliated Metamorphic Rock

Quartzite (River Pebble)

Metamorphic Quartzite (SiO2)

Quartzite Pebble

Metamorphic Quartzite (SiO2)

Yellow Quartzite (River Pebble)

Metamorphic Quartzite (SiO2)

Schist

Crystalline Metamorphic Schist

Quartzite Pebble

Metamorphic Quartz (SiO2)

Rhodonite

Rhodonite (Manganese Iron Magnesium Calcium Silicate - (Mn,Fe,Mg,Ca)SiO3)

Sapphirine in Matrix

Sapphirine (Mg,Al)8(Al,Si)6O20

Quartz

Quartz (SiO₂)

Banded Gneiss (Variety of Gneiss)

Gneiss (specifically, a variety exhibiting prominent banding; mineral composition can vary, but often contains quartz, feldspar, mica, and amphibole)

Quartz Vein in Gneiss or Basalt

Milky Quartz (SiO2) within Metamorphic Host Rock

Jade (Nephrite or Jadeite)

Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (Na(Al,Fe3+)Si2O6)

Quartz (likely a macrocrystalline variety like milky quartz or smoky quartz, given the appearance in the image)

Quartz (SiO₂ - Silicon Dioxide)

Amazonite

Amazonite (KAlSi3O8, a variety of Microcline)

Quartz (Rock Crystal) with minor impurities

Quartz (SiO2)

Blue Quartz

Quartz (SiO2) with inclusions

Marble

Marble (metamorphosed limestone/dolostone). Predominantly composed of Calcite (CaCO3) for marble derived from limestone, or Dolomite (CaMg(CO3)2) for marble derived from dolostone.

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals like Antigorite, Lizardite, and Chrysotile)

Fuchsite in Quartz

K(Al,Cr)2(AlSi3O10)(OH)2 in SiO2

Rhodonite

Manganese Silicate (Mn,Fe,Mg,Ca)SiO3

Rhodonite

Rhodonite (Mn,Fe,Mg,Ca)SiO3

Almandine Garnet

Almandine (Fe3Al2(SiO4)3)

Quartz (likely)

Quartz (SiO2 - Silicon Dioxide)

Pebble (likely Sandstone or Granitic Pebble)

Clastic Sediment (or specific rock type, e.g., Arenite, Granitoid Pebble)

Eclogite

Eclogite (Omphacite + Pyrope)

Epidote in Matrix (likely Amphibolite or Gneiss)

Epidote (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH)) in Metamorphic Matrix

Dalmatian Jasper

Aplite with Arfvedsonite inclusions

Banded Gneiss (River Rock/Pebble)

Gneiss (specifically a banded variety, likely a orthogneiss or paragneiss depending on parent rock)

Green Aventurine

Silicon Dioxide (Quartz with Fuchsite inclusions), SiO2 + K(Al,Cr)2AlSi3O10(OH)2

Quartz vein in metamorphic rock

Crystalline Silicon Dioxide (SiO2) in Host Rock

Nephrite Jade

Ca2(Mg, Fe)5Si8O22(OH)2

Dark Igneous Rock (Likely Basalt or Diabase)

Basalt (extrusive igneous rock) or Diabase (intrusive igneous rock - also known as Dolerite), largely composed of plagioclase feldspar, pyroxene (augite), and sometimes olivine and amphibole. Exact mineralogy would require thin section analysis.

Orthoclase Feldspar

Potassium aluminum silicate (KAlSi3O8)

Quartzite

Quartzite

Almandine Garnet in Schist

Almandine, Fe3Al2(SiO4)3

Prehnite

Prehnite (Ca2Al2Si3O10(OH)2)

Eclogite

Eclogite (Pyrope garnet and Omphacite pyroxene)

Unakite

Unakite (Epidotized Granite)