Mineral, Specifically A Detrital Grain

Sandstone (Ferruginous)

Arenite (composed primarily of SiO2 with Fe2O3 staining)

Basalt with Caliche Crust

Aphanitic Mafic Igneous Rock with Calcium Carbonate (CaCO3) coating

Quartz Pebble

Silicon Dioxide (SiO2)

Basalt

Mafic Igneous Rock

Schist

Lepidoblastic Mica Schist

Quartz in Basalt (Xenocryst)

Silicon Dioxide (SiO2) in Mafic Igneous Volcanic Rock

Amygdaloidal Basalt

Amygdaloidal Basalt (Ca-rich Plagioclase, Pyroxene, and Olivine)

Amygdaloidal Rhyolite (often called Lake Superior Agate relative)

Rhyolite with Calcite/Quartz amygdules (SiO2 and secondary minerals)

Diorite

Phaneritic Intermediate Igneous Rock

Giallo Ornamental Granite

Phaneritic Igneous Rock (composed of Quartz, Feldspar, and Mica)

Granite

Phaneritic Plutonic Felsic Rock (KAlSi3O8 - SiO2 - NaAlSi3O8)

Vesicular Basalt with Amygdules

Amygdaloidal Basalt

Sandstone

Arenite (primarily SiO2)

Indigo Gabbro

Gabbro (MaFIC intrusive rock)

Sandstone (Greywacke/Lithic Sandstone)

Arenite (composed primarily of SiO2)

Shale

Fissile Mudstone (primarily composed of clay minerals and quartz grains)

Gemstone Sand (Mineral Assortment)

Mixed Mineral Concentrates (Commonly including Quartz SiO2, Garnet X3Y2(SiO4)3, and Tourmaline (Na,Ca)(Li,Mg,Al)3(Al,Fe,Mn)6(BO3)3(Si6O18)(OH,F)4)

Diamond

Carbon (C), specifically a solid form of the element carbon with atoms arranged in a crystal structure called diamond cubic.

Quartzite

Quartzite (primarily SiO2)

Pyrite in Quartz

Iron Sulfide (FeS2) in Silicon Dioxide (SiO2)

Sandstone

Arenite (composed mainly of SiO2)

Siltstone with iron staining

Siltstone (primarily SiO2 with FeO(OH) coatings)

Sandstone (likely Arkosic)

Clastic Sedimentary Rock (primarily SiO2 with Feldspar)

Greenschist (Greenstone)

Chlorite schist (primarily Chlorite-Epidote-Actinolite-Albite)

Red Sandstone

Arenite (with Iron Oxide / Hematite staining)

Amygdaloidal Basalt with Secondary Minerals

Basalt containing secondary mineralization (likely Chlorite, Celadonite, or Zeolites)

Sandstone

Arenite

Mica Schist

Schist (primarily Muscovite and Biotite mica)

Desert Rose (Baryte or Selenite variant)

Barium Sulfate (BaSO4) or Gypsum (CaSO4·2H2O) with Sand inclusions

Sandstone (Quartzose)

Arenite (primarily SiO2)

Quartzite

Quartzite (Primary mineral: SiO2)

White Zircon

Zircon (Zirconium silicate, ZrSiO4)

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic Volcanic Rock)

Sandstone (Quartzose Sandstone)

Clastic Terrigenous Sedimentary Rock (primarily SiO2)

Schist

Mica Schist

Sandstone (likely Graywacke or Arkose variant)

Clastic Sedimentary Rock (SiO2 based)

Granite

Phaneritic Plutonic Felsic Rock

Basalt with Quartz/Plagioclase Inclusions

Mafic volcanic rock (Basaltic)

Limestone

Calcium Carbonate (CaCO3)

Lepidolite (in Quartz Matrix)

Lepidolite [K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2]

Schist with Biotite and Quartz

Biotite-Quartz Schist (Fe,Mg,Al silicate mix)

Granite

Granite (Felsic Plutonic Rock)