Igneous And Mineral

Carnelian

Chalcedony (SiO2) with Iron Oxide impurities

Smoky Quartz

Smoky Quartz (Silicon Dioxide - SiO2)

Moonstone

Orthoclase and Albite (KAlSi3O8 / NaAlSi3O8)

Dalmatian Jasper

Peralkaline Quartz-Feldspar Porphyry with Arfvedsonite

Clear Quartz

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Amethyst

Quartz (Silicon Dioxide with Iron impurities), SiO2

Clear Quartz Crystal

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Labradorite

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

Clear Quartz

Silicon Dioxide (SiO2)

Orthoclase Feldspar

KAlSi3O8 (Potassium aluminum silicate)

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Quartz with mica and feldspar (Pegmatite fragment)

Granitic Pegmatite (composed mainly of SiO2 with KAlSi3O8)

Basalt (with possible Calcite/Quartz veining)

Afanitic Mafic Igneous Rock

Basalt with Secondary Mineral Inclusions

Amygdaloidal Basalt (Mafic volcanic rock, primarily Augite and Plagioclase)

Quartz

Silicon Dioxide (SiO2)

Quartz Fragment

Silicon Dioxide (SiO2)

Quartz (Common or Milky)

Silicon Dioxide (SiO2)

Clear Quartz Point

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Zircon

Zircon (Zirconium Silicate - ZrSiO4)

Epidote

Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))

Quartz

Crystalline Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Olivine (Peridot)

Magnesium Iron Silicate ((Mg, Fe)2SiO4)

Smoky Quartz

Smoky Quartz (SiO2: Silicon Dioxide)

Quartz (Small Fragment)

Silicon Dioxide (SiO2)

Green Moss Agate

Agate (Silicon Dioxide - SiO2 with inclusions of Manganese/Iron oxides)

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Milky Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Feldspar (Orthoclase)

Potassium Feldspar (KAlSi3O8)

Turquoise (possible Dyed Magnesite/Howlite)

CuAl6(PO4)4(OH)8·4H2O

Magnetite (Lodestone variety)

Magnetite (Iron(II,III) oxide, Fe3O4)

Pyrite on Quartz

Iron Sulfide (FeS2) on Silicon Dioxide (SiO2)

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Schorl (Black Tourmaline)

NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)

Arfvedsonite in Quartz

Arfvedsonite [Na3(Fe2+4Fe3+)Si8O22(OH)2] often hosted in Quartz or Feldspar

Basalt with Calcite Veining

Aphanitic Mafic Igneous Rock (primarily Plagioclase and Pyroxene)

Mahogany Obsidian

Volcanic Glass with Hematite/Magnetite inclusions