Sedimentary Or Igneous (Secondary Formation)

Basalt

Basalt (Mafic volcanic rock)

Sandstone

Sandstone (clastic sedimentary rock, composed predominantly of sand-sized minerals or rock fragments)

Golden Sheen Obsidian

Obsidian (volcanic glass) with inclusions of gas bubbles and mineral crystals (e.g., hematite, magnetite) causing the sheen

Chrysoprase

Chalcedony (cryptocrystalline quartz) with nickel inclusions; SiO2

Banded Iron Formation (BIF) / Tiger Iron

Banded Iron Formation containing Hematite (Fe2O3) and Magnetite (Fe3O4)

Sandstone

Arenite (SiO2 principal)

Red Jasper (Heliotrope family variant)

Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)

Carnelian

Chalcedony (cryptocrystalline quartz), SiO2 (Silicon Dioxide)

Sandstone Concretion

Clastic Sedimentary Concretion (primarily SiO2 with Fe2O3 cement)

Chert (Jasper)

Microcrystalline Silica (SiO2)

Chert (Common Variety, Jasper)

Microcrystalline Quartz (SiO2)

Fluorite and Rose Quartz

Fluorite (CaF2), Rose Quartz (SiO2)

Sandstone

Arenite (SiO2 based with various mineral cements)

Fairburn Agate / Agate-bearing Breccia

Cryptocrystalline Quartz (SiO2) within Jasper/Breccia matrix

Black Tourmaline (Schorl)

Sodium Iron Aluminum Borosilicate (NaFe2+3Al6(Si6O18)(BO3)3(OH)3OH)

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of Titanium, Iron, or Manganese

Lace Agate (specifically Red Lace Agate)

Silicon Dioxide (SiO2) - variety of Chalcedony/Quartz

Labradorite

Labradorite ((Ca, Na)(Al, Si)4O8)

Rose Quartz

Silicon Dioxide (SiO2) with trace Titanium or Manganese

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of Titanium, Iron, or Manganese

Granite (specifically Red Granite)

Phaneritic Plutonic Rock (High in Alkali Feldspar and Quartz)

Diorite

Intrusive Igneous Diorite (intermediate composition)

Granite

Granite (felsic intrusive igneous rock)

Ferruginous Sandstone

Clastic sedimentary rock (SiO2 with Fe2O3/FeO(OH) cement)

Basalt

Extrusive mafic igneous rock

Sandstone (likely Arkosic or Lithic Sandstone)

Clastic Sedimentary Rock (SiO2 with assorted minerals)

Sandstone (Ferruginous)

Arenite (Fe2O3 stained)

Sandstone

Arenite (primarily SiO2)

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily SiO2)

Limestone

CaCO3 (Mainly Calcite or Aragonite)

Sandstone

Arenite (primarily composed of SiO2)

Sandstone (Ferruginous)

Clastic Sedimentary Rock (primarily SiO2 with Fe2O3 staining)

Sandstone (Ferruginous)

Arenite (with Iron Oxide cement)

Specular Hematite

Hematite (Fe2O3)

Specular Hematite

Iron Oxide (Fe2O3)

Yellow Calcite

Calcite (Calcium Carbonate, CaCO3)

Red Jasper

Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3)

Gold

Native Gold (Au)

Limonite Concretion

Goethite-rich Concretion (FeO(OH))

Mica in Quartz Host

Muscovite (KAl2(AlSi3O10)(OH)2) in Quartz (SiO2)

Quartz

Quartz (SiO₂ - Silicon Dioxide)