Mineral (Evaporite)

Proustite

Proustite (Ag3AsS3)

Pyrite in Matrix (Gold-colored Chalcopyrite or Pyrite)

Iron Sulfide (FeS2) / Copper Iron Sulfide (CuFeS2)

Limonite (Ironstone Concretion)

Hydrous ferric oxides (FeO(OH)·nH2O)

Limonite

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

Limonite (Iron Ore)

Limonite (FeO(OH)·nH2O)

Limonite Sandstone

Ferruginous Sandstone (Hydrated Iron Oxide)

Desert Rose (Gypsum/Baryte)

Hydrated Calcium Sulfate (CaSO4·2H2O)

Schist

Schist

Limonite (Iron Ore)

FeO(OH)·nH2O

Green Fluorite

Fluorite (Calcium Fluoride, CaF2)

Fossil Shark Tooth

Odontaspididae (Sand Tiger Shark family)

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Gneiss (specifically Granite Gneiss)

Gneiss (High-grade Regional Metamorphic Rock)

Vanadinite

Lead Chlorovanadate, Pb5(VO4)3Cl

Desert Rose

Baryte or Gypsum variation (CaSO4·2H2O or BaSO4)

Sandstone with Ironstone Concretion

Arenite with Ferruginous Cement

Desert Rose (Gypsum Rose)

Gypsum (CaSO4·2H2O) with Sand Inclusions

Sandstone

Arenite (clastic sedimentary rock)

Granite

Intrusive Felsic Igneous Rock

Banded Gneiss

Gneiss

Epidote

{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)

Epidote

Epidote (Ca2(Al,Fe)3(SiO4)3(OH))

Epidote

Epidote ({Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH))

Limonite (Iron Ore)

Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)

Not a rock, mineral, or geological specimen

Fluorite

Calcium Fluoride (CaF2)

Epidote

Epidote (Ca2(Al2,Fe3+)AlSi3O12(OH))

Pyrite

Iron Sulfide (FeS2)

Mica Group Minerals

There isn't a single scientific name as 'Mica' refers to a group of phyllosilicate minerals. Common scientific names include Muscovite (KAl₂ (AlSi₃O₁₀)(OH)₂), Biotite (K(Mg,Fe)₃AlSi₃O₁₀(OH)₂), Phlogopite (KMg₃AlSi₃O₁₀(OH)₂), and Lepidolite (K(Li,Al)₃(Al,Si,Rb)₄O₁₀(F,OH)₂).

Chalcedony (Botryoidal)

Silicon Dioxide (SiO2)

Picture Jasper

Silicon Dioxide (SiO2) with iron oxide and silicate minerals

Amygdaloidal Basalt with Epidote/Chlorite

Basalt (containing (Ca2(Al2Fe3+)(SiO4)(Si2O7)O(OH)))

Jade (likely Jadeite)

Jadeite (a pyroxene mineral) or Nephrite (a variety of amphibole mineral)

Limonite (Ironstone)

Limonite (Hydrated iron(III) oxide-hydroxide, FeO(OH)·nH2O)

Sandstone (Banded)

Arenite

Desert Rose

Gypsum rosette (Hydrous calcium sulfate, CaSO4·2H2O)

Gneiss

Gneiss

Limonite (Iron Ore)

Limonite (FeO(OH)·nH2O)

Quartz (Druzy)

Silicon Dioxide (SiO2)

Fluorite with Quartz coating

Calcium Fluoride (CaF2) with Silicon Dioxide (SiO2)

Fluorite

Calcium fluoride, CaF2

Quartz Druze on Matrix

Silicon Dioxide (SiO2)