Sedimentary Or Igneous Associated Mineral

Quartz Mineral

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Quartz (SiO₂)

Quartz

Silicon Dioxide (SiO2)

Calcite

Calcite (Calcium Carbonate, CaCO3)

Quartz

Silicon Dioxide (SiO2)

Slate

Slate

Quartzite

Quartzite (SiO2-rich metamorphic rock)

Ruby in Fuchsite

Corundum (Al2O3) in Fuchsite (K(Al,Cr)3Si3O10(OH)2)

Granite

Granite (Phaneritic Quartz-Feldspar Plutonic Rock)

Quartz (Rock Crystal)

Quartz (SiO₂ - Silicon Dioxide)

Quartz

Quartz (SiO₂)

Chalk

Calcareous Ooze (composed primarily of coccoliths)

Serpentine Schist with Quartz Vein

Serpentine Schist (a type of Metamorphic rock). The white band is likely Quartz (SiO2).

Jasper in Basalt Matrix

Silicon Dioxide (SiO2) with impurities; Chalcedony

Nephrite Jade

Nephrite

Botryoidal Chalcedony

Chalcedony (SiO2)

Lapis Lazuli

Lapis Lazuli (a rock type, not a single mineral; main component is Lazurite (Na,Ca)8[(S,Cl,SO4,OH)2|(Al6Si6O24)])

Gneiss

Gneiss (High-grade regional metamorphic rock)

Unakite

Epidotized Granite

Tiffany Stone

Fluoritized Opal Beryllium Tuff (composed of Fluorite; CaF2, Opalized SiO2, Bertrandite, Chalcedony, and Quartz)

Basalt River Stone

Basalt

Black Spinel

Magnesium Aluminum Oxide (MgAl2O4)

Diorite

Diorite (Intermediate intrusive igneous rock)

Mookaite Jasper

Siliceous sedimentary rock (variety of Jasper/Chert)

Rose Quartz

Silicon Dioxide (SiO2)

Rose Quartz

Silicon Dioxide (SiO2) with traces of Titanium, Iron, or Manganese

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Calcite

Calcite (CaCO₃)

Sapphire

Corundum (Al2O3)

Plagioclase Feldspar (specifically Albite/Oligoclase)

(Na,Ca)(Si,Al)4O8

Orthoclase Feldspar

Orthoclase (KAlSi3O8)

Gneiss (Gneissic Granite)

Gneiss

River Pebble (Gneiss or Quartzite mixture)

Metamorphic rock (Commonly Gneissic)

Sandstone (with man-made markings)

Arenite (composed primarily of Quartz, SiO2)

General Rock and Mineral Collection (Center: Angelite / Blue Anhydrite)

Anhydrite (Calcium Sulfate, CaSO4)

Garnet

Garnet Group (Silicate Minerals), formula varies e.g., Alm: Fe3Al2(SiO4)3

Sodalite

Sodalite, Na8(Al6Si6O24)Cl2

Serpentinite

Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4

Rhodonite

Rhodonite (MnSiO3)

Hypersthene

Hypersthene ((Mg,Fe)SiO₃)

Metal Alloy (Likely Pewter or Sterling Silver)

Not a natural geological specimen; composed of refined metals. If pewter, it's a tin-based alloy. If sterling silver, it's 92.5% silver and 7.5% other metals (usually copper).

Serpentine

Serpentinite (a rock composed primarily of serpentine minerals like antigorite, chrysotile, and lizardite; general formula (Mg, Fe)3Si2O5(OH)4)