Clear Quartz
Silicon Dioxide (SiO2)
mineral
Category
Igneous And Mineral
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Quartz (Milky/Common)
Silicon Dioxide (SiO2)
mineral
Diopside (likely Chromian Diopside)
Diopside, part of Clinopyroxene family of inosilicates. Chemical formula: CaMgSi2O6. The green variety is often Chromian Diopside due to chromium impurities.
mineral
Vesicular Basalt with Calcification
Vesicular Basalt (Aphanitic extrusive igneous rock)
igneous
Granite
Phaneritic plutonic igneous rock (SiO2 range 65-75%)
igneous
Greenstone / Greenschist
Greenschist (composed of Chlorite, Epidote, Actinolite)
metamorphic
Quartz (Iron-Stained)
Crystalline Silicon Dioxide (SiO2)
mineral
Magnetite / Iron-Rich Basalt
Magnetite bearing Mafic Rock (Fe3O4)
igneous
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Moss Agate
Silicon Dioxide with inclusions (SiO2 + Mn/Fe/Chlorite)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Moonstone
Orthoclase Feldspar (formula: (K,Na)AlSi3O8)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite (mica)
Mineral (variety of Quartz)
Quartz Vein / Milky Quartz
Silicon Dioxide (SiO2)
mineral
Mica (specimen appears to be Muscovite or Phlogopite)
Phyllosilicate mineral; Muscovite: KAl2(AlSi3O10)(F,OH)2
Mineral (Found in Igneous and Metamorphic rocks)
Optical Calcite (Iceland Spar)
Calcite (Calcium Carbonate, CaCO3)
mineral
Orthoclase Feldspar
Potassium Feldspar (KAlSi3O8)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Aventurine
Silicon Dioxide (SiO2) with inclusions
mineral
Optical Calcite
Calcium Carbonate (CaCO3)
mineral
Banded Agate
Cryptocrystalline Quartz (SiO2)
mineral
Moonstone
Orthoclase (Potassium aluminum silicate - KAlSi3O8)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite (Iron Pyrite)
Iron Disulfide (FeS2)
mineral
Magnetite
Magnetite (Fe3O4)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Black Tourmaline
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral