Quartz River Pebble
Silicon Dioxide (SiO2)
mineral
Category
Igneous
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Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Hypersthene
Hypersthene ((Mg,Fe)SiO3)
mineral
Labradorite
Labradorite ((Ca, Na)(Al, Si)4O8)
mineral
Sodalite
Sodalite (Na8Al6Si6O24Cl2)
mineral
Gold
Native Gold (Au)
mineral
Spessartine Garnet
Manganese aluminum silicate (Mn2+3Al2(SiO4)3)
mineral
Eudialyte
Na15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2
mineral
Labradorite
Labradorite (Ca, Na)(Al, Si)4O8
mineral
Pyrite in Matrix (Gold-colored Chalcopyrite or Pyrite)
Iron Sulfide (FeS2) / Copper Iron Sulfide (CuFeS2)
mineral
Black Tourmaline
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Quartz with Mica/Host Rock
Silicon Dioxide (SiO2) with Phyllosilicates
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Serpentine
Antigorite-Lizardite-Chrysotile (Mg3Si2O5(OH)4)
metamorphic
Quartz (Milky/Crystalline fragment)
Silicon Dioxide (SiO2)
mineral
Pyrite and Sunstone
Iron Sulfide (FeS2) and Plagioclase Feldspar ((Ca,Na)Al(Al,Si)Si2O8)
mineral
Citrine
Silicon Dioxide (SiO2)
mineral
Labradorite
(Na, Ca)(Si, Al)4O8
mineral
Carnelian
Carnelian (SiO2)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Pink Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Garnet
Garnet (X3Y2(SiO4)3)
mineral
Ruby in Zoisite
Anyolite (Calcium Aluminum Silicate with Aluminum Oxide impurities)
metamorphic
Sodalite
Na8(Al6Si6O24)Cl2
mineral
Peridot
Olivine (Magnesium Iron Silicate), (Mg, Fe)2SiO4
mineral
Quartz (River Pebble)
Silicon Dioxide (SiO2)
Mineral
Amazonite
Microcline (K(AlSi3O8))
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Agate
Silicon dioxide (SiO2)
mineral
Amethyst
SiO2 (Silicon Dioxide with Iron impurities)
mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Granite
Phaneritic Igneous Rock (composed of Quartz, Feldspar, and Mica)
igneous
Granite
Plutonic felsic rock (Quartz, Feldspar, Mica)
igneous
Dalmatian Stone (Dalmatian Jasper)
Peralkaline Quartz-Feldspar Rock with Arfvedsonite
igneous
Snowflake Obsidian
Volcanic glass containing Spherulites (SiO2)
igneous
Dalmatian Stone
Dalmatian Stone (a fine-grained igneous rock, often misidentified as Dalmatian Jasper)
igneous
Grey Granite
Phaneritic Felsic Intrusive Igneous Rock
igneous
Granite
Granite (Felsic Plutonic Rock)
igneous
Greenstone / Diabase Porphyry
Porphyritic Diabase (Micro-gabbro)
Igneous
Granite (Pink/Potassium Feldspar rich)
Granite (K-feldspar rich intrusive igneous rock)
igneous