Mineral, Often A Rock Given Its Aggregate Nature

Sandstone

Clastic sedimentary rock (primarily SiO2)

Sandstone (likely Arkose or Quartz Sandstone)

Arenite (SiO2 + varied clasts)

Basalt

Extrusive mafic igneous rock

Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Basalt

Extrusive mafic igneous rock

Red Jasper

Silicon Dioxide (SiO₂)

Chert (Chert Nodule with Chalky Cortex)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Basalt

Basalt (Mafic Extrusive Igneous Rock)

Sandstone (specifically Banded Sandstone)

Clastic sedimentary rock (primarily SiO2)

Jasper (Iron-stained Chert)

Silicon Dioxide (SiO2) with impurities of Iron Oxide

Chrysocolla in Matrix

Hydrated copper phyllosilicate mineral (Cu,Al)2H2Si2O5(OH)4·nH2O

Sandstone

Arenite (primarily SiO2)

Coquina / Shelly Limestone

Bioclastic Limestone (composed of CaCO3)

Banded Agate (likely Carnelian Agate or Sardonyx)

Agate is a common name for a microcrystalline variety of Quartz (SiO₂), specifically a form of Chalcedony.

Quartz (Milky/Smoky variety)

Silicon Dioxide (SiO2)

Blue Quartzite

Quartzite (specifically a variety enriched with blue-coloring minerals)

Amygdaloidal Basalt

Amygdaloidal Basalt containing Zeolite and Calcite inclusions

Fossiliferous Limestone (Coquina / Shell Limestone)

Biogenic Limestone (Calcium Carbonate, CaCO3)

Sandstone (likely Arkosic)

Clastic Sedimentary Rock (primarily SiO2 with Feldspar)

Chert (Chert / Flint)

Silicon dioxide (SiO2) - Microcrystalline quartz

Milky Quartz

Quartz (Silica / Silicon Dioxide), SiO2

Chert (Flint)

Chert (Silicon Dioxide, SiO2)

Pumice

Vesicular volcanic glass (primarily Alumino-silicates)

Pink Granite

Phaneritic Igneous Rock (high K-feldspar content)

Limestone with Chert or Siltstone bands

Sedimentary carbonate rock (CaCO3) often with siliceous impurities

Granite

Granite (Felsic Plutonic Rock)

Sandstone with Quarzite clasts

Arenite (SiO2 based)

Gabbro

Gabbro (mafic intrusive igneous rock)

Chert (Iron-stained)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Quartz Pebbles

Silicon Dioxide (SiO2)

Jasper with Dendritic Inclusions

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Jasper

Silicon dioxide (SiO2)

Quartzite

Quartzite (primarily SiO2)

Blue Agate (Dyed Chalcedony)

Silicon Dioxide (SiO2)

Ironstone Concretion (Moqui Marble type)

Iron oxide concretion (Goethite/Hematite and Sandstone)

Quartz (Citrine or Iron-stained Quartz)

Silicon Dioxide (SiO2)

Red Jasper

Jasper (Silicon Dioxide with Iron Oxide impurities), SiO2

Quartzite River Rock

Metamorphic Quartzite (primarily SiO2)

Basalt

Basalt (Mafic volcanic rock)

Larimar

Pectolite (a blue variety of Pectolite)

Basalt

Mafic volcanic rock (consisting mostly of plagioclase, pyroxene, and olivine)

Sandstone (likely Red/Brown Sandstone)

Arenite (SiO2 based)