Mineral (Native Element Alloy)

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Citrine or Yellow Quartz

Silicon Dioxide (SiO2) with iron impurities

Black Tourmaline

Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)

Clay (as a rock-forming material)

Clay minerals (e.g., Kaolinite group, Smectite group, Illite group, Chlorite group)

Pyrite in Quartz (Drill Core)

Silicon Dioxide (SiO2) with Iron Sulfide (FeS2) inclusions

Green Druzy Quartz (Prasiolite)

Silicon Dioxide (SiO2) with inclusions (typically Chlorite or Actinolite)

Chlorite (Small Flakes/Sand)

Chlorite Group (Magnesium Iron Aluminum Silicate Hydroxide - (Mg,Fe)3(Si,Al)4O10(OH)2·(Mg,Fe)3(OH)6)

Nephrite Jade

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

Pyrite

Iron Sulfide (FeS2)

Sandstone (Pebble)

Arenite (primarily SiO2)

Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Gneiss (Metamorphic Cobble)

Gneiss

Blue Apatite

Apatite group (Ca5(PO4)3(F,Cl,OH))

Blue Apatite

Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz (Milky Quartz / Quartzite)

Silicon Dioxide (SiO2)

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Unakite

Epidotized Granite

Blue Apatite

Apatite-(CaF), Ca5(PO4)3F

Granite

Phaneritic plutonic rock (primarily Quartz, Feldspar, and Mica)

Asphalt (Road Aggregate)

Asphalt concrete / Bituminous mixture

Marble

Recrystallized Calcite (CaCO3)

Garnet (Almandine or Spessartine likely)

Garnet Group Minerals (e.g., Almandine Fe3Al2(SiO4)3, Pyrope Mg3Al2(SiO4)3, Spessartine Mn3Al2(SiO4)3)

Blue Agate (Dyed Chalcedony)

Silicon Dioxide (SiO2)

Blue Kyanite

Kyanite (Al2SiO5)

Sandstone (Green/Yellow Siltstone variant)

Arenite or Siltstone (primarily SiO2 with mineral staining)

Gneiss

Gneiss (High-grade metamorphic rock)

Turquoise

Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]

Red Sandstone

Arenite (primarily SiO2 with hematite/iron oxide coating)

Ironstone Concretion / Limonite-stained Siltstone

Ironstone (primarily Limonite FeO(OH)·nH2O and Siltstone)

Magnetite

Magnetite (Iron(II,III) oxide, Fe3O4)

Basalt with Epidote/Chlorite

Amygdaloidal Basalt (SiO2 with (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH)))

Petrified Wood

Silicified Wood (SiO2)

Chert (Septarian Concretion/Nodule)

Microcrystalline silica (SiO2) with carbonate mineral veining

Garnetiferous Quartzite (Garnet Gneiss Pebble)

Garnet-bearing Quartzite or Quartz-Feldspar Gneiss

Granite

Granite (Phaneritic igneous rock)

Quartz (Double-Terminated)

Silicon Dioxide (SiO2)

Sandstone (likely Arkosic)

Clastic Sedimentary Rock (Sandstone)

Basalt with Amygdules

Amygdaloidal Basalt

Quartz (Double-Terminated)

Silicon Dioxide (SiO2)