Mineral In Metamorphic Rock

Basalt with Quartz/Calcite Vein

Basalt (Mafic Volcanic Rock with secondary mineralization)

Zoisite with Ruby (Anyolite)

Anyolite (Ca2Al3(SiO4)3(OH) + (Hb, Al, Cr)2O3)

White Quartz

Silicon Dioxide (SiO2)

Sandstone (Quartzose)

Sandstone (clastic sedimentary rock, primarily SiO2)

Quartz Geode Fragment

Silicon Dioxide (SiO2)

Ruby in Zoisite

Anyolite (combination of Ca2Al3(SiO4)3(OH) and Al2O3:Cr)

Quartz / Common Opal Transition

Silicon Dioxide (SiO2)

Plagioclase Feldspar

Plagioclase Feldspar Series (NaAlSi3O8 - CaAl2Si2O8)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with iron oxides)

Sand (Construction Grade)

Unconsolidated siliciclastic sediment (primarily SiO2)

Tiger's Eye

Silicon dioxide (SiO2) with fibrous inclusions of crocidolite (riebeckite)

Hypersthene

(Mg,Fe)SiO3 - Enstatite-Ferrosilite series

Ruby

Corundum (Al2O3 with Chromium traces)

Black Tourmaline

Schorl (Sodium Iron Aluminum Borosilicate Hydroxide)

Labradorite

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

Garnet (specifically Almandine or Pyrope)

Almandine: Fe3Al2(SiO4)3 or Pyrope: Mg3Al2(SiO4)3

Blue Sapphire

Corundum (Al2O3 with trace Titanium and Iron)

Smoky Quartz

Silicon Dioxide (SiO2)

Sandstone (with Iron Siderite Concretion)

Arenite with Ironstone Concretion (FeCO3)

Muscovite Mica

Muscovite - KAl2(AlSi3O10)(OH)2

Epidosite (Unakite-related)

Epidosite (predominantly Epidote, Ca2(Al2,Fe3+)(SiO4)3(OH))

Biotite (Black Mica)

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

Rhodonite

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

Jasper and Quartz River Cobble

Silicon Dioxide (SiO2) with Hematite inclusions

Peacock Ore (Chalcopyrite/Bornite)

Bornite (Cu5FeS4) or iridescent treated Chalcopyrite (CuFeS2)

Basalt

Basalt (dominated by plagioclase feldspar and pyroxene)

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz-veined Basalt

Amygdaloidal or Porphyritic Basalt with Silicon Dioxide (SiO2) vein

Granitic Pegmatite

Granite Pegmatite (coarse-grained intrusive igneous rock)

Quartz Druzy Geode

Silicon Dioxide (SiO2)

Sandstone (Ferruginous)

Arenite (composed primarily of SiO2 with Fe2O3 staining)

Geode (Unopened)

Silicon Dioxide (SiO2) in sedimentary vugs

Limonite Concretion (Ironstone)

Limonite (FeO(OH)·nH2O) / Goethite

Granite (Pink/Red)

Phaneritic Plutonic Felsic Rock (major minerals: Quartz, Orthoclase Feldspar, Plagioclase Feldspar)

Emerald / Green Beryl

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

Ruby Zoisite

Anyolite (Zoisite with Ruby and Pargasite)

Greenstone

Protolith of basalt, diabase, or gabbro; often contains minerals like chlorite, actinolite, and epidote

Red Sandstone

Arenite (with Iron Oxide cement)

Sandstone with Iron Oxide (Limonite/Hematite)

Ferruginous Sandstone (SiO2 with FeO(OH)·nH2O)

Green Aventurine

Aventurine Quartz (SiO2 with Fuchsite inclusions)

Nephrite Jade

Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)

White Marble

Recrystallized Calcite (CaCO3)