Mineral And Sedimentary

Turquoise

Hydrated copper and aluminum phosphate (CuAl6(PO4)4(OH)8·4H2O)

Native Sulfur

Sulfur (S)

Turquoise

Hydrated phosphate of copper and aluminium: CuAl6(PO4)4(OH)8·4H2O

Blue Apatite

Apatite-(CaF), Ca5(PO4)3F

Yellow Chalcedony or River Jasper

Silicon Dioxide (SiO2)

Blue Lace Agate

Cryptocrystalline Quartz (SiO2) with trace minerals

Quartz

Silicon Dioxide (SiO2)

Dalmatian Stone

Dalmatian Jasper (Aphanitic Igneous Rock with Arfvedsonite inclusions)

Sandstone

Arenite (primarily SiO2)

Red Sandstone

Arenite (with Iron Oxide / Hematite cementation)

Sandstone

Clastic sedimentary rock (primarily SiO2)

Sandstone (Quartzose Sandstone)

Clastic sedimentary rock (primarily SiO2)

Chert

Silicon dioxide (SiO2)

White Marble

Recrystallized Calcite (CaCO3)

Geode (Unopened)

Siliceous Concretion / Geode

Gneiss

High-grade regional metamorphic rock (Foliated)

Sandstone (Stream Pebble)

Arenite (primarily SiO2)

Ferruginous Sandstone

Arenite with Iron-oxide cement

Quartz / Limestone Gravel

SiO2 (Silicon Dioxide) and CaCO3 (Calcium Carbonate)

Sandstone (Quartzose Sandstone)

Clastic Terrigenous Sedimentary Rock (primarily SiO2)

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Wallboard/Drywall (Gypsum-based)

Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O

Sandstone (likely Quartzose Sandstone)

Clastic Sedimentary Rock (primarily SiO2)

Bauxite

Bauxite (Al(OH)3, γ-AlO(OH), and α-AlO(OH))

Magnetite / Hematite mix (Iron Ore)

Fe3O4 (Magnetite) / Fe2O3 (Hematite)

Geode (unopened)

SiO2 - Chert-shelled concretion (mostly Quartz)

Limestone with Calcite Veins

Sedimentary Calcium Carbonate (CaCO3)

Sandstone (Pebble)

Arenite (composed primarily of SiO2)

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily Quartz - SiO2)

Sandstone (Ferruginous)

Arenite with Iron Oxides

Quartz Vein in Siltstone

SiO2 (Quartz) on clastic sedimentary matrix

Quartz Crystal with Inclusions

Silicon Dioxide (SiO2)

Dendritic Siltstone (or Mudstone)

Siltstone with Manganese Oxide dendrites

Feldspar

KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8

Gneiss (specifically Granitic Gneiss)

Gneiss (composed primarily of Quartz, Feldspar, and Biotite/Amphibole)

Sandstone (with manganese staining)

Clastic sedimentary rock (primarily SiO2)

Red Sandstone

Arenite (primarily Quartz, SiO2, with Iron Oxide cementing agent)

Gneiss (specifically a Granitic Gneiss specimen)

Gneiss (high-grade metamorphic rock primarily composed of Quartz, Feldspar, and Biotite/Amphibole)

Sandstone (Quartzite-rich Pebble)

Arenite (primarily SiO2)

Gneiss (with Quartz-Feldspar vein)

Gneiss (high-grade metamorphic rock) containing Quartz (SiO2) and Feldspar (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8)

Quartz / Quartz Geode fragment

Silicon Dioxide (SiO2)

Carnelian Agate

Chalcedony (SiO2 with Iron Oxide impurities)