Mineral On Sedimentary Rock

Granite

Phaneritic Intrusive Igneous Rock (composed of Quartz, Feldspar, and Mica)

Schist with Biotite Inclusion

Biotite-bearing Mica Schist (K(Mg,Fe)3AlSi3O10(F,OH)2)

Quartz Geode

Silicon Dioxide (SiO2)

Granite Cobble

Phaneritic Felsic Igneous Rock

Basalt (River Rock/Cobble)

Basalt (no specific mineral formula as it's a rock)

Anthracite Coal

Anthracite (Carbon-based sedimentary-derived metamorphic rock)

Jasper

Silicon dioxide (SiO2)

Bloodstone

Heliotrope (cryptocrystalline Quartz, SiO2 with inclusions of Hematite)

Basalt with Amygdules

Amygdaloidal Basalt

Banded Agate (specifically Botswana Agate or Water-line Agate)

Chalcedony (cryptocrystalline variety of Quartz), SiO2

Quartzite

Quartzite (primarily SiO2)

Dragon Blood Jasper

Epidote with Pietersite or Red Jasper (Ca2Al2Fe3+[Si2O7][SiO4]O(OH))

Turquoise in Matrix

Hydrous phosphate of copper and aluminium, CuAl6(PO4)4(OH)8·4H2O

Granite

Granite

Sandstone

Arenite

Dendritic Opal

Opalized Chalcedony with Manganese Inclusions (SiO2 · nH2O)

Blue Lace Agate

Chalcedony (a form of Quartz) - SiO2

Milky Quartz

Crystalline Silicon Dioxide (SiO2)

Biotite Mica

Biotite (K(Mg,Fe)3AlSi3O10(OH,F)2)

Amethyst

Amethyst (SiO2 with iron impurities)

Rose Quartz

Silicon dioxide with traces of titanium, iron, or manganese (SiO2)

Granite

Felsic Intrusive Igneous Rock

Turquoise (beads)

Turquoise; CuAl6(PO4)4(OH)8·4H2O

Obsidian

Amorphous volcanic glass (primarily SiO2)

Quartz (Water-worn pebble)

Silicon Dioxide (SiO2)

Yellow Chert (Gold-toned Jasper)

Silicon Dioxide (SiO2)

Limestone

Calcium Carbonate (CaCO3)

Ferruginous Sandstone (Iron-rich Sandstone)

Ferruginous Arenite

Chert / Jasper

Microcrystalline Quartz (SiO2)

Chert (Brecciated River Cobble)

Silicon Dioxide (SiO2)

Chert (Jasper/Ironstone variety)

Silicon Dioxide (SiO2) with iron oxide inclusions

Chert (Nodule)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Basalt with Quartz/Calcite Veins

Basalt (Aphanitic Mafic Volcanic Rock) with Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3) inclusions

Schist

Mica Schist (contains muscovite/biotite and quartz)

Jasper in Quartz (River Cobble)

Silicon Dioxide (SiO2) with Ferric Iron inclusions

Manganese Ore (Psilomelane/Pyrolusite)

Psilomelane ((Ba,H2O)2Mn5O10) and Pyrolusite (MnO2)

Banded Gneiss

Gneiss (pronounced "nice")

Amygdaloidal Basalt

Basalt with secondary amygdule minerals (likely Epidote or Chlorite)

Ferruginous Quartz (River Pebble)

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Desert Rose

Gypsum (variety Selenite) - CaSO4·2H2O

Fossil Coral

Scleractinia (Anthos), primarily Calcium Carbonate (CaCO3)

Jasper and Chert Conglomerate

Ferruginous Microcrystalline Quartz (SiO2)