Mineral, Specifically A Detrital Grain

Zircon

Zircon (ZrSiO4)

Fuchsite

K(Al,Cr)2(AlSi3)O10(OH)2

Pink Granite

Granite (Phaneritic Quartz-Feldspar Rock)

Quartz Grain

Silicon Dioxide (SiO2)

Sandstone (lithic/greywacke variety)

Arenite (composed primarily of SiO2 with various lithic fragments)

Black Tourmaline

Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)

Granite Pebble (Pink/Orthoclase Granite)

Granite

Pink Granite

Phaneritic Igneous Rock (composed of orthoclase, quartz, and mica)

Amygdaloidal Basalt with Epidote/Chlorite

Basalt (containing (Ca2(Al2Fe3+)(SiO4)(Si2O7)O(OH)))

Pink Granite

Phaneritic plutonic igneous rock (Alkali feldspar granite)

Sandstone with Iron Staining

Clastic sedimentary rock (primarily SiO2 with Fe2O3)

Granite

Granite (Alkali-feldspar granite)

Conglomerate

Conglomerate (clastic sedimentary rock)

Sandstone Pebble

Arenite (specifically Lithic or Quartz Arenite)

Sandstone (Ferruginous)

Clastic sedimentary rock (SiO2 with Fe2O3)

Pink Granite Porphyry

Phaneritic Granodiorite (Quartz + Feldspar + Mica)

Sandstone (with ripple marks)

Arenite / Quartz Sandstone

Ferruginous Sandstone

Sandstone (rich in iron oxides/hydroxides)

Sandstone (Ferruginous)

Arenite (with iron oxide cement, Fe2O3)

Sandstone (Greywacke)

Arenite / Greywacke Sandstone

Pegmatitic Granite

Granite (composed of Quartz, Feldspar, and Mica)

Pink Granite

Phaneritic Plutonic Felsic Igneous Rock (Granite)

Pink Granite

Granite (Alkali-feldspar granite)

Sandstone (Red Flagstone)

Clastic sedimentary rock (primarily Quartz - SiO2)

Pink Granite

Phaneritic Felsic Igneous Plutonic Rock

Granite (Orthoclase rich)

Granite (composed primarily of Quartz and Potassium Feldspar KAlSi3O8)

Pink Granite

Granite (Alkali-feldspar granite)

Granite Pebble

Granite (composed primarily of Quartz, Potassium Feldspar, Plagioclase, and Biotite/Amphibole)

Schist (specifically Chlorite/Greenschist)

Chlorite Schist

Sandstone (with Possible Iron Staining/Crust)

Arenite (SiO2 based)

Desert Rose

Gypsum (variety Selenite) or Baryte, CaSO4 · 2H2O

Sandstone

Arenite (specifically Iron-stained Quartz Sandstone)

Tourmaline (likely Schorl)

Tourmaline Group Mineral (e.g., Schorl for black varieties); (Na,Ca)(Li,Mg,Fe,Mn,Al)3Al6(BO3)3Si6O18(OH)4

Ferruginous Sandstone

Arenite with Iron Oxide cement (Fe2O3 / FeO(OH))

Crazy Lace Agate

Chalcedony (Silicon Dioxide, SiO2)

Sandstone (Banded)

Arenite (primarily SiO2)

Granite

Plutonic felsic igneous rock

Orange Quartzite / Carnelian Agate

Silicon Dioxide (SiO2)

Dalmatian Stone

Dalmatian Jasper (Aplite rock composition)

Pink Granite

Phaneritic Felsic Igneous Rock

Shale

Fissile mudrock (composed of clay-sized particles and detrital grains)

Red Sandstone (Hematitic)

Clastic sedimentary rock (SiO2 with Fe2O3 inclusions)