Mineral In A Matrix (Likely Quartz Or Feldspar)

Epidote in Matrix (Unakite-related)

Epidosite (Ca2(Al,Fe)3(SiO4)3(OH))

Chalcopyrite in Quartz (Gossan/Iron Hat)

CuFeS2 (Chalcopyrite) with SiO2 (Quartz)

Porphyritic Basalt

Porphyritic Mafic Extrusive Rock

Sandstone

Clastic Sedimentary Rock (composed mostly of SiO2)

Unakite (Epidotized Granite)

Epidote-Feldspar-Quartz Rock

Andesite

Andesite (Intermediate Extrusive Volcanic Rock)

Blue Quartz (Aventurine)

Silicon Dioxide (SiO2) with fibrous inclusions (commonly Dumortierite)

Pink Granite

Phaneritic Felsic Igneous Rock (composed primarily of K-Feldspar, Quartz, and Mica)

Quartz

Silicon Dioxide (SiO2)

Pink Granite

Granite (Alkali-feldspar granite)

Granite

Granite (High-silica plutonic rock)

Gold Ore in Quartz/Schist

Auriferous Quartz and Sulfide-bearing Schist

Pink Granite

Phaneritic plutonic rock (dominated by Alkali Feldspar)

Almandine Garnet in Matrix

Almandine (Fe3Al2(SiO4)3)

Conglomerate

Clastic sedimentary rock (Puddingstone)

Green Aventurine

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

Amygdaloidal Basalt

Amygdaloidal Basalt (containing secondary minerals like Quartz, Zeolites, or Calcite)

Sandstone

Arenite (Clastic Sedimentary Rock)

Sandstone

Clastic sedimentary rock (primarily SiO2)

Pegmatite (White Granite variant)

Pegmatitic Granite (Quartz and Feldspar rich)

Granite

Granite (Phaneritic Acid Igneous Rock)

Granite

Intrusive Igneous Rock (composed of Quartz, Alkali Feldspar, and Plagioclase)

Arsenopyrite in Quartz Matrix

Arsenopyrite (FeAsS) with Quartz (SiO2)

Granite

Granite (Felsic Plutonic Rock)

Blue Quartz (Dumortierite Quartz)

Silicon Dioxide with Aluminum Borosilicate (SiO2 + AlAl6BSi3O18)

Basalt with Amygdules

Amygdaloidal Basalt

Sandstone

Arenite

Druzzy Quartz on Matrix

Silicon Dioxide (SiO2)

Smoky Quartz (Ferruginous Quartz)

Quartz (Silicon Dioxide, SiO2)

Sandstone (Iron-stained)

Clastic sedimentary rock (SiO2 with Fe2O3 staining)

Pink Tourmaline in Quartz Matrix

Elbaite (Na(Li,Al)3Al6(Si6O18)(BO3)3(OH)4) in Quartz (SiO2)

Quartz (Flesh-colored or Rose Quartz variety)

Silicon Dioxide (SiO2)

Granite

Phaneritic Felsic Igneous Rock

Granite Pebble (River Rock)

Granite (composed primarily of Quartz, Feldspar, and Mica)

Granite

Granite (a plutonic igneous rock composed primarily of quartz and feldspar)

Porphyry

Porphyritic Andesite/Dacite

Quartz Vein on Matrix

Silicon Dioxide (SiO2)

Gneiss

Gneiss (High-grade regional metamorphic rock)

Blue Quartzite

Quartzite (primarily SiO2) with inclusions like Dumortierite or Magnesio-riebeckite

Granite

Phaneritic Plutonic Felsic Rock

Dumortierite Quartz (Blue Quartz)

Al7(BO3)(SiO4)3O3 / Quarz with Dumortierite inclusions

Quartz Geode (with Calcite influence)

Silicon Dioxide (SiO2) with possible Calcium Carbonate (CaCO3)