Metamorphic Rock (Composed Of Multiple Minerals)

Milky Quartz

Silicon Dioxide (SiO2)

Vesicular Basalt (Iron-Stained)

Mafic Volcanic Rock (Basalt)

Quartz Druzy on Matrix (with Copper Mineralization)

Silicon Dioxide (SiO2) with Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·n H2O)

Jadeite

Jadeite (NaAlSi2O6)

White Quartz

Silicon Dioxide (SiO2)

Clear Quartz

Crystalline Silicon Dioxide (SiO2)

Orthoclase Feldspar

Orthoclase (KAlSi₃O₈)

Blue Apatite

Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)

Jasper containing epidote (Unakite-like)

Epidotized Jasper (SiO2 with Ca2(Al,Fe)3(SiO4)3(OH))

Limonite (Iron-rich Siltstone / Sandstone base)

Hydrous ferric oxide mixture (FeO(OH)·nH2O)

Epidosite (Epidote-rich rock)

Epidotalite (primarily Ca2(Al2Fe3+)(SiO4)(Si2O7)O(OH))

Amygdaloidal Basalt

Amygdaloidal Basalt (Ca-rich Plagioclase, Pyroxene, and Olivine)

Blue Quartz (Aventurine)

Silicon Dioxide (SiO2) with inclusions of Dumortierite or Magnesio-riebeckite

Fossiliferous Chert with Brachiopod Impression

Chert (SiO2) containing Brachiopoda fossil remains

Slate

Slate (Foliated Metamorphic Rock)

Mica Schist

Foliated Metamorphic Rock (Schist)

Lapis Lazuli

Lazurite-rich metamorphic rock

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartzite

Quartzite (Primary mineral: SiO2)

Green Moonstone (Garnierite)

Nickel-bearing Magnesium Silicate (often a mix of Serpentine and Talc/Chlorite groups)

Agate

Silicon Dioxide (SiO2) - Chalcedony variety

Limonite (Iron Ore)

Limonite (FeO(OH)·nH2O)

Schist

Mica Schist

Milky Quartz

Silicon Dioxide (SiO2)

Graphite

Graphite (Native Carbon, C)

Prase quartz with actinolite inclusions

Silicon dioxide (SiO2) with Calcium Magnesium Iron Silicate Hydroxide inclusions

Quartzite

Quartzite (Primary mineral: Quartz, SiO2)

Magnetite (potentially as a Lodestone or within Ironstone)

Magnetite (Fe3O4)

Pyrite

Pyrite (Iron Disulfide), FeS2

Jadeite

Jadeite (NaAlSi2O6)

Granite (Weathered)

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

Quartz (Milky and Bull Quartz)

Silicon Dioxide (SiO2)

Quartzite

Metamorphic Rock (Mainly SiO2)

Ironstone (likely siderite or goethite-rich siltstone)

Ferruginous Siltstone

Smoky Quartz

Silicon Dioxide (SiO2)

Jasper in Basalt Matrix

Silicon Dioxide (SiO2) with impurities; Chalcedony

Tiger's Eye (Rough)

Pseudomorph of Quartz after Crocidolite (SiO2)

Quartzite

Quartzite (primarily SiO2)

Ferruginous Quartz (Iron-stained Quartzite)

Silicon Dioxide (SiO2) with Hematite/Limonite impurities

Clear Quartz

Silicon Dioxide (SiO2)

Quartz pebble

Silicon dioxide (SiO2)

Bituminous Coal

Organic Sedimentary Rock (composed mostly of carbon with sulfur and hydrogen)