Mineral (Found In Igneous And Metamorphic Rocks)

Grey Slate

Foliated Metamorphic Rock (formed by low-grade regional metamorphism of shale or mudstone)

Agate

Agate (Cryptocrystalline Variety of Quartz, SiO2)

Epidote in Basalt

Epidotized Basalt (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH) in Mafic Igneous Host)

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic Extrusive volcanic rock)

Ferruginous Quartz

Quartz (Silicon Dioxide, SiO2) with Iron Oxides

Moss Agate

Chalcedony (Silicon Dioxide) with dendritic inclusions (SiO2)

Labradorite (Feldspar)

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

Quartz (specifically Milky or Clear Quartz fragment)

Silicon Dioxide (SiO2)

Schist

Mica Schist (primarily Muscovite or Biotite sheet silicates)

Granite

Granite (Felsic Intrusive Igneous Rock)

Quartz (specifically Citrine or Yellow Quartz)

Silicon Dioxide (SiO2)

Quartzite

Quartzite (Primary mineral: SiO2)

Gneiss

Gneiss (High-grade metamorphic rock)

Amethyst

Amethyst (Silicon Dioxide - SiO2 with Iron impurities)

Granite

Plutonic Igneous Rock (composed primarily of Quartz, Feldspar, and Mica)

Carnelian

SiO2 (Silicon Dioxide) - Translucent reddish-brown variety of Chalcedony

Milky Quartz

Crystalline Silicon Dioxide (SiO2)

Quartz Mica Schist

Mica-Quartz Schist (Chemical: SiO2 + KAl2(AlSi3O10)(OH)2)

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Green Aventurine

Aventurine Quartz (SiO2 with Fuchsite inclusions)

Granite

Phaneritic Igneous Rock (composed primarily of Quartz, Alkali Feldspar, and Plagioclase)

Granite

Phaneritic plutonic rock (Quartz, Feldspar, Mica)

Quartz Vein in Host Rock

Silicon Dioxide (SiO2) in Rhyolitic Matrix

Granite with Biotite and Quartz

Phaneritic Felsic Igneous Rock (composed of SiO2, KAlSi3O8, and K(Mg,Fe)3AlSi3O10(OH)2)

Amethyst

Amethyst (Silicon Dioxide, SiO2)

Granitic Quartz with Feldspar

Granite (composed primarily of SiO2 and KAlSi3O8)

Amygdaloidal Basalt

Amygdaloidal Basalt (extrusive volcanic rock with mineral inclusions)

Granite

Granite (a common rock type, not a single mineral; composed primarily of Quartz, Feldspar (Orthoclase and Plagioclase), and Mica (Biotite and/or Muscovite) and/or Amphibole)

Green Aventurine

Quartzite with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)

Sodalite

Sodalite (Na8Al6Si6O24Cl2)

Pink Granite

Granite (Phaneritic felsic intrusive igneous rock)

Blue Quartzite

Silicon Dioxide (SiO2) with inclusions

Labradorite

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

Emerald

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

Jadeite Jade

Sodium Aluminum Silicate (NaAlSi2O6)

Milky Quartz

Silicon Dioxide (SiO2)

Carnelian

Carnelian (a variety of Chalcedony, SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Carnelian Agate

Silicon Dioxide (SiO2) with iron oxide impurities

Blue Agate (Dyed)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Quartz Pebble

Quartz (Silicon Dioxide, SiO2)