Organic Mineral

Aragonite

Aragonite (Carbonate mineral), CaCO3

Chert (Jasper variation)

Chert (Silicate mineral, SiO2)

Quartzite

Quartzite (Primary mineral: SiO2)

Banded Gneiss

Gneiss (variable mineral composition)

Sandstone (likely Quartzose)

Arenite (SiO2 principal mineral)

Amethyst

Amethyst (Silica mineral, SiO2)

Sandstone

Sandstone (various mineral compositions)

Amygdaloidal Basalt

Basalt with secondary mineral infilling

Schist

Schist (various mineral compositions)

Red Jasper

Jasper (Silicate Mineral - SiO2)

Granitic Pegmatite

Granitic Pegmatite (principally Quartz, Potassium Feldspar, and Mica)

Green Calcite

Calcite (CaCO3)

Basalt with Caliche Crust

Aphanitic Mafic Igneous Rock with Calcium Carbonate (CaCO3) coating

Sandstone (likely Ferruginous)

Arenite (primarily SiO2 with Fe2O3 staining)

Satin Spar (Gypsum)

Hydrous Calcium Sulfate (CaSO4·2H2O)

Arsenopyrite with Schist Matrix

Arsenopyrite (FeAsS)

Quartz Pebble (with Mica or Iron staining)

Silicon Dioxide (SiO2)

Turquoise (possible Dyed Howlite or Magnesite imitation)

CuAl6(PO4)4(OH)8·4H2O (Turquoise)

Ferruginous Quartz (Iron-Stained Quartz)

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Turquoise

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

Azurite with Malachite and Limonite

Azurite Cu3(CO3)2(OH)2 / Malachite Cu2CO3(OH)2

Turquoise

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

Red Sandstone (Iron-Rich)

Arenite (Fe2O3)

Turquoise

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

Limonite

Limonite (Hydrous iron oxides, FeO(OH)·nH2O)

Red Sandstone

Arenite (with Iron Oxide cement)

Sandstone with Iron Oxide (Limonite/Hematite)

Ferruginous Sandstone (SiO2 with FeO(OH)·nH2O)

Moonstone

Orthoclase (Potassium Feldspar) - (K,Na)AlSi3O8

Lapis Lazuli

Lapis Lazuli (A complex rock primarily composed of Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)

Lepidolite with Quartz

K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2

Feldspar

KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8

Granite Pebble (Salt and Pepper Granite)

Felsic Intrusive Igneous Rock (Granite)

Granite Gneiss

Gneiss (High-grade regional metamorphic rock)

Quartz Vein in Schist

Quartz (SiO2) in Mica Schist

Grey River Stone (Gneiss/Schist mix)

Foliated Metamorphic Rock (variable mineral formula)

Basalt with Epidote (Flowerstone-like texture)

Amygdaloidal Basalt (silicate mineral inclusions)

Sandstone (with Iron Staining)

Clastic Sedimentary Rock (primarily Quartz, SiO2)

Sardonyx Agate Sphere

Cryptocrystalline Quartz (SiO2) with iron oxide inclusions

Turquoise (set in silver jewelry)

Turquoise - CuAl6(PO4)4(OH)8·4H2O (Hydrated copper and aluminum phosphate)

Turquoise

CuAl6(PO4)4(OH)8·4H2O

Azurite and Malachite on Matrix

Azurite: Cu3(CO3)2(OH)2; Malachite: Cu2CO3(OH)2

Sandstone (likely Ferruginous)

Sandstone (SiO2 with iron oxides)