Igneous And Sedimentary Mixture

Limonite with Iron Inclusions

Limonite (Hydrated Iron Oxide, FeO(OH)·nH2O)

Bauxite

Bauxite (Al(OH)3, AlO(OH))

Basalt (Road Gravel)

Aphanitic mafic volcanic rock (various compositions of plagioclase feldspar and pyroxene)

Limonite (Iron Ore)

Limonite (FeO(OH)·nH2O)

Limonite

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

Bauxite

Bauxite (mixture of Gibbiste Al(OH)3, Boehmite ̳-AlO(OH), and Diaspore ́-AlO(OH))

Asphalt / Bituminous Aggregate

Bituminous mixture (Hydrocarbon-based sediment)

Bauxite

Bauxite (mixture of Hydrous Aluminum Oxides)

Coarse-grained Granite

Granitoid (KAlSi3O8 + SiO2 + NaAlSi3O8)

Dalmatian Stone

Peralkaline Quartz-Feldspar Rock with Arfvedsonite

Granodiorite

Granodiorite (Intermediate intrusive igneous rock)

Laterite

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

Graywacke

Graywacke

Unakite

Epidotized Granite

Chalcedony (Agate)

Silicon Dioxide (SiO2)

Dragon Blood Jasper (Lizard Stone/Septarian Chalcedony)

Epidote with Black Hornblende and White Quartz mixture

Granite

Phaneritic plutonic rock (Quartz, Alkali Feldspar, and Plagioclase)

Limonite Pseudomorph after Pyrite

Limonite (Hydrous iron oxides, FeO(OH)·nH2O) replacing Pyrite (FeS2)

Limonite (Iron Stone/Iron Ore)

FeO(OH)·nH2O (Hydrous ferric oxide)

Pyrite (locally known as Fool's Gold)

Iron Sulfide (FeS2)

Bauxite

Alumina-rich rock (consisting of Gibbsite, Boehmite, and Diaspore)

Chert (within Asphalt)

Chert (SiO2)

Limonite and Goethite encrusted Chert/Ironstone

Hydrated Iron Oxide (FeO(OH)·nH2O) with cryptocrystalline Silica (SiO2)

Bauxite

Hydrated Aluminum Oxides (primarily Gibbsite Al(OH)3, Boehmite γ-AlO(OH), and Diaspore α-AlO(OH))

Yellow Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Granite

Granite (Felsic Plutonic Rock)

Limonite (Ironstone)

Limonite (Hydrated iron(III) oxide-hydroxide, FeO(OH)·nH2O)

Fancy Jasper

Silicon Dioxide (SiO2) with mineral inclusions

Limonite (after Pyrite Pseudomorph)

Limonite (Hydrated Iron Oxide Mixture, FeO(OH)·nH2O)

Limonite (also known as Yellow Ochre or Brown Hematite)

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

Pyrulite (Pyrite / Chalcopyrite)

Iron Sulfide (FeS2) or Copper Iron Sulfide (CuFeS2)

Limonite (Iron Ore)

Limonite (FeO(OH)·nH2O)

Bauxite (Pisolitic Bauxite)

Bauxite (mixture of Hydrous Aluminum Oxides)

Asphalt (Bituminous pavement fragment)

Artificial conglomerate / Bitumen-Aggregate mixture

Bauxite

Bauxite (Mixture of Hydrous Aluminum Oxides)

Biotite Gneiss

Gneiss (complex mixture including Biotite K(Mg,Fe)3AlSi3O10(F,OH)2 and Quartz/Feldspar)

Grey Chalcedony (Agate)

Silicon Dioxide (SiO2)

Limonite (often after Hematite or Goethite)

Limonite (FeO(OH)·nH2O)

Limonite (with Goethite/Ironstone)

FeO(OH)·nH2O (Hydrated Iron Oxide)

Epidote

Epidote (Ca2(Al,Fe)3(SiO4)3(OH))

Granodiorite

Granodiorite (containing Plagioclase, Quartz, and K-feldspar)

Carnelian (Carnelian Agate)

Carnelian (Silicon Dioxide - SiO2)