Mineral Within A Sedimentary Rock

Sandstone (likely Greywacke or Siltstone variety)

Arenite / Siltstone (primarily SiO2)

Satin Spar (Selenite)

Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O

Sandstone (Ferruginous)

Arenite with Iron-Oxide Cement

Sandstone (likely Quartzose Sandstone)

Arenite (primarily SiO2)

Sandstone (Quartzose)

Arenite (SiO2 based)

Sandstone (Iron-stained)

Clastic sedimentary rock (SiO2 with Fe2O3 staining)

Sandstone (Pebble/Conglomerate fragment)

Sandstone (clastic sedimentary rock)

Sandstone

Arenite (SiO2 + various cementing minerals)

Zebra Rock (Zebra Stone / Ribbon Stone)

Siltstone with Ferruginous Banding (Primarily Quartz, Kaolinite, and Hematite)

Herkimer Diamond

Double-Terminated Quartz (SiO2)

Sandstone (Weathered)

Arenite (primarily SiO2)

Sandstone

Clastic sedimentary rock (primarily SiO2)

Moss Agate

Silicon Dioxide (SiO2) with inclusions of manganese or iron oxides

Red Sandstone (Iron-Rich)

Arenite (Fe2O3)

Sandstone (with manganese staining)

Clastic sedimentary rock (primarily SiO2)

Sandstone (with banding/weathering)

Clastic Sedimentary Rock (primarily SiO2)

Red Sandstone (Arkose)

Clastic Sedimentary Rock (Lithic Arkose)

Sandstone

Sandstone (Clastic Sedimentary Rock)

Chalcedony

Silicon Dioxide (SiO2)

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Specular Hematite

Iron Oxide (Fe2O3)

Chalcedony (Agate/Carnelian)

Cryptocrystalline Silicon Dioxide (SiO2)

Blue Chalcedony

Chalcedony (SiO2)

Turquoise with Pyrite

Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O] with Iron Pyrite (FeS2)

Quartz (Milky/Crystal variety)

Silicon Dioxide (SiO2)

Sandstone (Quartzose Sandstone)

Clastic Sedimentary Rock (Lithic arenite / Quartz arenite)

Citrine Quartz

Citrine (Silicon Dioxide - SiO2)

Blue Apatite

Apatite - Ca5(PO4)3(F,Cl,OH)

Sandstone (Pebble)

Clastic sedimentary rock (SiO2 primary)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Chalcedony

Cryptocrystalline Quartz (SiO2)

Granite (Core Sample)

Phaneritic Felsic Igneous Rock (Granite)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Ironstone Concretion (Siderite Nodules)

Siderite (FeCO3) in Mudstone or Sandstone matrix

Red Jasper with Quartz Veining

Jasper (Silicon Dioxide, SiO2) with Quartz (SiO2) inclusions

Mahogany Obsidian

Volcanic Glass (with inclusions of Magnetite or Hematite)

Mudstone

Lutylite (group of fine-grained sedimentary rocks)

Limestone with Calcite Veins

Sedimentary Calcium Carbonate (CaCO3)

Sandstone (Ferruginous)

Arenite (with iron oxide cement, Fe2O3)

Chalcedony (Agate/Quartz)

Silicon Dioxide (SiO2)

Moqui Marble

Ironstone Concretion (Goethite/Hematite shell with Sandstone core)

Chalcedony (Banded/Mottled Variety)

Chalcedony (a cryptocrystalline variety of Quartz, SiO2)