Sedimentary And Metamorphic Minerals

Clear Quartz

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

White Quartz

Silicon Dioxide (SiO2)

Quartz (Milk/Citrine variety)

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Pyrite in Matrix (likely Quartz or Coal)

Iron Sulfide (FeS2)

Green Calcite

Calcium Carbonate (CaCO3)

Hematite

Iron(III) oxide (Fe2O3)

Clear Quartz Crystal

Quartz (Silicon Dioxide - SiO2)

Schist

Mica Schist (primarily Muscovite and Biotite)

Serpentinite

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

Lapis Lazuli

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

Unidentifiable Specimen

Undetermined

Red Garnet (likely Almandine or Pyrope)

Garnet group: X3Y2(SiO4)3 (e.g., Almandine: Fe3Al2Si3O12)

Blue Quartz (Aventurine)

Silicon Dioxide (SiO2) with fibrous inclusions (commonly Dumortierite)

Sandstone

Arenite (SiO2 based)

Emerald / Green Beryl

Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities

Milky Quartz with Iron Staining

Silicon Dioxide (SiO2)

Fuchsite Schist

Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2) in Schist

Unakite

Epidotized Granite

Sandstone (Tumbled/River Pebble)

Arenite (composed primarily of SiO2)

Orthoclase Feldspar

Potassium aluminum silicate (KAlSi3O8)

Orthoclase Feldspar (Potassium Feldspar)

KAlSi3O8 (Potassium Aluminum Silicate)

Nephrite Jade

Ca2(Mg, Fe)5Si8O22(OH)2

Jade (likely Nephrite Jade based on appearance)

Nephrite (a variety of actinolite, Ca2(Mg,Fe)5Si8O22(OH)2)

Quartz Pebble

Silicon Dioxide (SiO2)

Ferruginous Quartz (Iron-stained Quartz)

Quartz with Iron Oxide inclusions (SiO2 with Fe2O3)

Hypersthene

Hypersthene ((Mg,Fe)SiO₃)

Raw Green Jasper

Silicon Dioxide (SiO2) with iron silicate inclusions

Red Jasper

Silicon Dioxide (SiO2) with Hematite inclusions

Hematite Nodules (Moqui Marbles style)

Iron Oxide (Fe2O3)

Hematite (Oolitic or Earthy variety)

Iron(III) oxide (Fe2O3)

Chert

Silicon dioxide (SiO2)

Geode (Unopened)

Siliceous Concretion / Geode

Limonite (Iron Ore Congcretion)

Limonite (a mixture of hydrated iron(III) oxide-hydroxides, FeO(OH)·nH2O)

Seashell Fragment (Aragonite/Calcite)

Calcium Carbonate (CaCO3) - Shell fragment

Red Sandstone

Arenite (with Iron Oxide / Hematite cementation)

Quartzite with Iron Inclusions

Metamorphic Quartzite (SiO2 with Fe2O3 trace impurities)

Schist

Mica Schist