Metamorphic Rock (Primarily Composed Of Minerals)

Conglomerate

Conglomerate (Clastic sedimentary rock)

Granite

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

Lapis Lazuli

Lapis Lazuli (Complex aggregate including Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)

Concretion or Geode (unbroken)

Varied (depending on mineral composition and cementing agent). For quartz-lined geodes, the scientific name of the dominant mineral would be Quartz (SiO2). For calcite-lined geodes, Calcite (CaCO3). Concretions are often composed of cryptocrystalline quartz (chert), calcite, or iron oxides.

Quartz (likely) / Siliceous rock with quartz phenocrysts (if a rock fragment)

Quartz (SiO₂)

Sandstone with Calcite Vein

Clastic sedimentary rock (primarily SiO2) with Calcium Carbonate (CaCO3) infilling

Quartzite

Quartzite (primarily SiO2)

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily Quartz with Hematite/Limonite oxides)

Quartzite

Quartzite (primarily SiO2)

Rhodonite

Rhodonite (Mn, Fe, Mg, Ca)SiO3

Turquoise

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

Quartz (likely Clear Quartz or Rock Crystal)

Quartz (SiO2)

Granite (Pink/Red variety)

Phaneritic Felsic Intrusive Igneous Rock (composed primarily of Quartz, K-Feldspar, and Plagioclase)

Moldavite

Tektite (Amorphous Silica, SiO2 + Al2O3)

Septarian Nodule (Dragon Stone)

Septarian concretion (Complex of Calcite, Aragonite, and Limestone/Clay)

Granite

Phaneritic intrusive igneous rock

Amygdaloidal Basalt with Quartz/Zeolite Infill

Amygdaloidal Basalt (extrusive volcanic rock with SiO2 or CaAl2Si3O10·3H2O infill)

Agate

Silicon Dioxide (SiO2)

Limonite (Iron Ore)

Limonite (Hydrated iron oxide - FeO(OH)·nH2O)

Quartz Vein with Host Rock (Greywacke/Siltstone)

Silicon Dioxide (SiO2) within Clastic Sedimentary/Metamorphic Matrix

Gray Quartzite with Quartz Veining

Metamorphosed Quartz-rich Sandstone

Pink Granite Pebble

Granite (Phaneritic igneous rock)

Pink Garnet in Matrix

Grossular or Almandine Garnet (X3Y2(SiO4)3)

Quartzite

Quartzite (primarily SiO2)

Jade (likely Jadeite or Nephrite)

Jadeite (NaAlSi2O6) or Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2)

Pink Feldspar

Potassium Feldspar (KAlSi3O8)

Liesegang Ring Siltstone

Siltstone with iron oxide Liesegang bands

Granite

Intrusive Felsic Igneous Rock (primarily Quartz, Feldspar, and Mica)

Granite

Phaneritic plutonic rock (SiO2 rich)

Ironstone (likely Limonite or Goethite)

Ferruginous sedimentary rock (FeO(OH)·nH2O)

Glauconite (Greensand)

(K, Na)(Fe3⁰, Al, Mg)₂(Si, Al)₄O₁₀(OH)₂

Granite

Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)

Kambaba Jasper (Crocodile Jasper)

Stromatolite (Fossilized Algae)

Granodiorite

Granodiorite (Intermediate plutonic rock)

Turquoise

CuAl6(PO4)4(OH)8·4H2O

Siltstone with Concretion

Siltstone (composed of hydraulic silicates and quartz particles)

Turquoise

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

Riverstone Quartzite (Water-worn Siltstone/Quartzite)

Metamorphosed Quartz-rich Arenite (SiO2)

Quartzite River Pebble

Quartzite (primarily SiO2)

Quartzite

Quartzite (primarily SiO2)

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic Extrusive)

Red Jasper

Jasper (Silicon Dioxide with Iron Oxide inclusions, SiO2)