Mineral, Specifically An Iron Ore

White Topaz

Aluminum Silicate Fluoride Hydroxide; Al2SiO4(F,OH)2

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz (Druzy Quartz)

Silicon Dioxide (SiO2)

Satin Spar

Fibrous Gypsum (CaSO4·2H2O)

Granite (Pink/Potassium Feldspar Granite)

Felsic Plutonic Rock (Potassium Feldspar, Quartz, Mica, and Amphibole)

Chalcopyrite in Matrix

Chalcopyrite (CuFeS2)

Jasper Breccia

Brecciated Jasper (Silicon Dioxide with Iron Oxide inclusions, SiO2)

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Biotite Mica

Biotite, K(Mg,Fe)3AlSi3O10(F,OH)2

Rhodonite

Rhodonite (Manganese Silicate), (Mn,Fe,Mg,Ca)SiO3

Rhodonite

Manganese Inosilicate (Mn,Fe,Mg,Ca)SiO3

Chrysocolla

Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·n H2O)

Chrysocolla

Hydrated copper silicates (Cu,Al)2H2Si2O5(OH)4·nH2O

Tiger's Eye (specifically Blue/Golden mixed or Hawk's Eye)

Pseudomorph of Quartz after Crocidolite (SiO2)

Sandstone (likely Greywacke or Siltstone variety)

Arenite / Siltstone (primarily SiO2)

Malachite

Copper(II) carbonate hydroxide [Cu2CO3(OH)2]

Banded Agate with Druzy Quartz

Agate (Silicon Dioxide - SiO2)

Pink Granite

Phaneritic Felsic Igneous Rock (composed primarily of K-Feldspar, Quartz, and Plagioclase)

Ironstone Concretion / Limonite Node

Ferruginous Sedimentary Rock (composed primarily of Limonite FeO(OH)·nH2O and Goethite)

Vanadinite

Lead Chlorovanadate, Pb5(VO4)3Cl

Gold-bearing Quartz with Pyrite

Quartz (SiO2) with Gold (Au) and Pyrite (FeS2)

Pink Granite

Phaneritic Felsic Intrusive Igneous Rock

Sphalerite in Matrix (Polished Point)

Zinc sulfide (Zn,Fe)S

Pyrite

Iron Pyrite (FeS2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Orange Calcite

Calcite (CaCO3)

Green Calcite

Calcium Carbonate (CaCO3)

Azurite and Malachite on Matrix

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

Milky Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Bi-Color Tourmaline (or Watermelon Tourmaline)

Tourmaline (complex borosilicate mineral group with general formula AD3G6(BO3)3T6O18(OH,O)4)

Bauxite

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

Bauxite

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

Blue Zircon

Zirconium Silicate (ZrSiO4)

Glauconitic Sandstone (Greensand)

Glauconitic Sandstone ((K, Na)(Fe3+, Al, Mg)2(Si, Al)4O10(OH)2)

Cinnabar in Matrix

Cinnabar (Mercury(II) sulfide, HgS)

Peacock Ore (Chalcopyrite)

Chalcopyrite (CuFeS2)

Fluorite (Green)

Calcium Fluoride (CaF2)

Aragonite (Sputnik habit)

Aragonite (Calcium Carbonate, CaCO3)

Chert (specifically Pink Chert or Jasperized Chert)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Chert (specifically Flint or Jasper variant)

Cryptocrystalline Quartz (SiO2)