Metamorphic Rock (Composed Of Multiple Minerals)

Shale with Pyrite

Clastic sedimentary rock containing Iron Disulfide (FeS2)

Limonite (Iron Ore/Hydrated Iron Oxide)

Limonite (mixture of FeO(OH)·nH₂O minerals, mainly Goethite, FeO(OH) and Lepidocrocite, FeO(OH))

Quartzite

Quartzite (primarily SiO2)

Quartzite Pebble

Metamorphic Quartzite (SiO2)

Pink Granite (Potassium-rich Granite)

Phaneritic Felsic Igneous Rock (primarily SiO2, Al2O3, K2O)

Quartz Vein in Host Rock (Gossanous Matrtix)

Silicon Dioxide (SiO2) with iron oxides (Limonite/Hematite)

Red Quartzite

Quartzite (SiO2 with iron oxide impurities)

Quartz (River Pebble)

Silicon Dioxide (SiO2)

Epidotite (Unakite variety)

Epidotized Granite (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH))

Chert (Nodule/Pebble)

Chert (Silicon Dioxide, SiO2)

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Turquoise

CuAl6(PO4)4(OH)8·4H2O (Hydrated copper and aluminum phosphate)

Petrified Wood

Silicified Wood (SiO2)

Eclogite garnet in matrix

Eclogite (Garnet-Omphacite rock)

Quartzite

Quartzite (primarily SiO2)

Quartzite

Quartzite (primarily Silicon Dioxide, SiO2)

Lapis Lazuli

Lapis Lazuli (Aggregate primarily of Lazurite: (Na,Ca)8(AlSiO4)6(S,SO4,Cl,1-2) with Calcite and Pyrite)

Orange Quartzite (with Iron Staining)

Quartzite (SiO2)

Rhodonite

Manganese silicate (Mn,Fe,Mg,Ca)SiO3

Caliche (with Lichen Cover)

Calcium carbonate-cemented soil layer (CaCO3)

Calcite

Calcium Carbonate (CaCO3)

Lapis Lazuli

Complex metamorphic rock containing Lazurite ((Na,Ca)8(AlSiO4)6(SO4,S,Cl)2), Calcite, and Pyrite

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with iron inclusions)

Quartz

Silicon dioxide (SiO₂)

Red Sandstone

Arenite (with Iron Oxide / Hematite cementation)

Basalt with Amygdules

Amygdaloidal Basalt

Quartzite

Metamorphosed Quartz Sandstone (SiO2)

Dragon Stone

Ohko Stone (Argillaceous sedimentary rock)

Quartzite (Milky Quartz Cobble)

Silicon Dioxide (SiO2)

Limonite (Yellow Ochre)

FeO(OH)·nH2O (Hydrous iron(III) oxide-hydroxide mixture)

Nuummite

Nuummite (Ortho-amphibole rock, primarily Anthophyllite and Gedrite)

Fossilized Coral

Scleractinian Anthozoa (Fossilized Calcium Carbonate, CaCO3)

Ferruginous Chert

Microcrystalline Quartz (SiO2) with Iron Oxides

Fossilized Coral (Petoskey Stone type)

Hexagonaria percarinata (Fossilized Rugose Coral)

Quartzite pebble

Metamorphic Quartzite (primarily SiO2)

Chert (Jasper variety)

Silicon Dioxide (SiO2)

Granite (weathered pebble)

Granite (plutonic igneous rock)

Septarian Nodule (Dragon Stone)

Septarian concretion (Complex of Calcite, Aragonite, and Limestone/Clay)

Quartz Pebble

Silicon Dioxide (SiO2)

Lapis Lazuli

Lapis Lazuli (Rock containing Lazurite, Na8[AlSi O4]6[S,Cl,SO4,OH]2)

Quartzite

Silicon Dioxide (SiO2)

Quartzite

Metamorphosed Quartz Sandstone (SiO2)