Mineral, Specifically A Detrital Grain

Greenstone / Epidosite

Metamorphosed Mafic Igneous Rock (Epidote-Chlorite group)

Granite / Gneiss Ballast Rock

Granite (Quartzo-feldspathic rock)

Carnelian

Carnelian (SiO2)

Labradorite (tumbled)

Labradorite (a plagioclase feldspar mineral between anorthite and albite; chemical formula: (Ca,Na)(Si,Al)4O8)

Crazy Lace Agate

Chalcedony (Silicon Dioxide, SiO2)

Pink Granite

Granite (Phaneritic igneous rock rich in Alkali Feldspar and Quartz)

Quartz

Silicon Dioxide (SiO₂)

Sandstone (lithic/greywacke variety)

Arenite (composed primarily of SiO2 with various lithic fragments)

Conglomerate

Conglomerate (clastic sedimentary rock)

Granite

Granite (Alkali-feldspar granite)

Zircon

Zircon (ZrSiO4)

Pink Granite

Phaneritic intrusive igneous rock (Felsic)

Sandstone with Iron Staining

Clastic sedimentary rock (primarily SiO2 with Fe2O3)

Black Tourmaline

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

Sandstone (with ripple marks)

Arenite / Quartz Sandstone

Sandstone (Ferruginous)

Clastic sedimentary rock (SiO2 with Fe2O3)

Rhodonite

(Mn,Fe,Mg,Ca)SiO3

Pink Granite

Granite (Phaneritic Igneous Rock)

Fuchsite

Chromium-rich Muscovite Mica

Pink Granite

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

Pink Granite Porphyry

Phaneritic Granodiorite (Quartz + Feldspar + Mica)

Pink Granite

Phaneritic plutonic igneous rock (Alkali feldspar granite)

Amygdaloidal Basalt with Epidote/Chlorite

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

Ferruginous Sandstone

Sandstone (rich in iron oxides/hydroxides)

Pegmatitic Granite

Granite (composed of Quartz, Feldspar, and Mica)

Pink Granite

Granite (Alkali-feldspar granite)

Brecciated Jasper

Silicon dioxide (SiO2) microcrystalline quartz breccia

Pink Granite

Granite (Phaneritic Quartz-Feldspar Rock)

Sandstone (Ferruginous)

Arenite (with iron oxide cement, Fe2O3)

Dalmatian Stone

Dalmatian Jasper (Aplite rock composition)

Granite (Orthoclase rich)

Granite (composed primarily of Quartz and Potassium Feldspar KAlSi3O8)

Granite Pebble (Pink/Orthoclase Granite)

Granite

Glauconitic Sandstone (Greenstone)

Glauconitic Siliciclastic Sandstone (K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2

Sandstone (Red Flagstone)

Clastic sedimentary rock (primarily Quartz - SiO2)

Ferruginous Sandstone

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

Sandstone (Greywacke)

Arenite / Greywacke Sandstone

Polished orbicular granite (likely larvikite or rapakivi-type granite)

Granite; primarily quartz, potassium feldspar, plagioclase, and biotite/hornblende

Sandstone (with Possible Iron Staining/Crust)

Arenite (SiO2 based)

Tourmaline (likely Schorl)

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

Chalcedony (specifically Agate or Carnelian)

Silicon Dioxide (SiO2)

Pink Granite

Granite (Alkali-feldspar granite)

Desert Rose

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