Mineral Precipitate (Anthropogenic Context)

Sandstone (with potential mineral inclusions)

Clastic sedimentary rock (primarily Quartz, SiO2)

Pink Granite

Phaneritic Plutonic Felsic Igneous Rock (Granite)

Sandstone or Quartzite

Arenite (if sedimentary) / Quartzite (if metamorphic)

Gneiss

High-grade regional metamorphic rock (Foliated)

Red Sandstone

Arenite (Ferruginous Sandstone)

Olivine (Peridot)

Magnesium Iron Silicate (Mg,Fe)2SiO4

Massive Quartz

Silicon dioxide (SiO2)

Pegmatite with Schorl (Black Tourmaline) and Mica

Pegmatite (complex association of NaAlSi3O8, NaFe3Al6(BO3)3Si6O18(OH)4, and KAl2(AlSi3O10)(OH,F)2)

Lapis Lazuli

Na8[Al6Si6O24]S2 (Lazurite component), a rock composed primarily of Lazurite, Calcite, and Pyrite

Diorite (Salt and Pepper Rock)

Diorite

Diorite

Diorite

Calcite (Yellow/Orange variety - sometimes called Honey Calcite)

Calcite

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic extrusive volcanic rock with secondary mineral infilling)

Azurite-Malachite with Limonite

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

Red Jasper

SiO2 (Silicon Dioxide with Iron Oxide impurities)

Yellow Jasper (within host rock)

Silicon Dioxide (SiO2) with iron hydroxides (Goethite)

Red Jasper

Silicon dioxide (SiO2) with iron oxide inclusions

Tiger's Eye

SiO2 (Pseudomorph of Quartz after Crocidolite)

Lapis Lazuli

Lazurite-rich metamorphic rock

Red Sandstone

Arenite (high iron oxide content)

Orthoclase Feldspar

KAlSi3O8 (Potassium Aluminum Silicate)

Fluorite

Calcium Fluoride (CaF2)

Sandstone (Iron-stained)

Arenite (primarily SiO2 with Fe2O3 staining)

Sandstone (Banded)

Clastic Sedimentary Rock: Arenite

Quartz (Chatoyant or Milky variety)

Silicon Dioxide (SiO2)

Satin Spar (Gypsum)

Hydrous calcium sulfate (CaSO4·2H2O)

Limonite (Iron Ore)

Limonite (FeO(OH)·nH2O)

Fluorite

Calcium Fluoride (CaF2)

Malachite

Malachite (Cu2(CO3)(OH)2 - a copper carbonate hydroxide mineral)

Lepidolite

K(Li,Al)3(Al,Si)4O10(F,OH)2 (Lithium-bearing phyllosilicate)

Granite or Pegmatite with Mica

Granitoid

Native Copper

Native Copper (Cu)

Fossilized Bone Fragment

Permineralized Vertebrate Fossil (Hydroxyapatite replaced by Minerals)

Granite

Granite (Felsic intrusive igneous rock)

Turquoise

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

Turquoise

Turquoise (CuAl6(PO4)4(OH)8·4H2O)

Limonite (Iron Ore)

Limonite (FeO(OH)·nH2O)

Goethite/Limonite Iron Ore Node

Goethite (FeO(OH)) or Limonite (mixture of hydrated iron oxides)

Turquoise with Pyrite

Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O] with Iron Pyrite (FeS2)

Dalmatian Stone

Dalmatian Jasper (a misnomer for an Aplite with Arfvedsonite spots)

Sandstone (likely Arkosic)

Arenite (SiO2 based)

Mica Schist

Schist (primarily Muscovite and Biotite mica)