Metamorphic Rock (Composed Of Multiple Minerals)

Calcite (Yellow/Orange variety - sometimes called Honey Calcite)

Calcite

Sandstone (clastic)

Clastic Sedimentary Rock (primarily composed of SiO2)

Yellow Quartzite Pebble

Quartzite (primarily Silicon Dioxide - SiO2)

Blue Quartzite

Quartzite (primarily SiO2 with inclusions)

Unakite

Unakitized granodiorite / Quartz-Epidote-Feldspar rock

Glauconitic Sandstone (Greensand)

Glauconitic Sandstone ((K, Na)(Fe3+, Al, Mg)2(Si, Al)4O10(OH)2)

Schist

Mica Schist

Mica Schist

Mica Schist (Composition typically contains Muscovite: KAl2(AlSi3O10)(OH)2 or Biotite: K(Mg,Fe)3AlSi3O10(OH)2 along with Quartz and Feldspar)

Clear Quartz

Silicon Dioxide (SiO2)

Lapis Lazuli

Lapis Lazuli (A metamorphic rock primarily composed of Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, along with Calcite and Pyrite)

Sandstone (with potential trace fossils)

Clastic sedimentary rock (primarily SiO2)

Chert (Jasper or Flint variant)

Chert (composed of microcrystalline quartz, SiO2)

Schist

Mica Schist (Group of medium-grade metamorphic rocks)

Greenstone (Greenstone River Pebble)

Greenschist (metamorphosed mafic igneous rock)

Unakite

Unakite (altered granite)

Gneiss (with Quartz and Biotite Mica)

Gneiss

Banded Gneiss (River Rock/Pebble)

Gneiss (specifically a banded variety, likely a orthogneiss or paragneiss depending on parent rock)

Green Aventurine (Green Quartzite)

Silicon Dioxide (SiO2) with inclusions of Fuchsite mica

Blue Quartzite

Quartzite (specifically a variety enriched with blue-coloring minerals)

Banded Gneiss (River Cobble)

Gneiss (a high-grade metamorphic rock)

Limonite Concretion

Hydrated iron(III) oxide-hydroxide (FeO(OH)·nH2O)

Mica Schist

Mica Schist (primarily Muscovite and Quartz)

Sandstone (Ferruginous)

Arenite with Iron-oxide inclusions (SiO2 primarily)

Nephrite Jade

Nephrite

Chert (varietal: Flint Pitted Pebble)

Cryptocrystalline Quartz (SiO2)

Biotite Schist

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

Unakite (Epidotized Granite)

Epidote-Feldspar-Quartz Rock

Raw Diamond

Carbon (C)

Shale or Argillite

Shale (sedimentary) / Argillite (metamorphic)

Granitic Gneiss

Gneiss (Polymetamorphic Granitic Gneiss)

Sandstone

Arenite (composed primarily of Quartz, SiO2)

Granite

Granite

Schist (Biotite/Mica Schist)

Medium-grade regional metamorphic rock (rich in Phyllosilicates)

Granite

Granite (a common name for a felsic intrusive igneous rock)

Schist (Micaceous Schist)

Schist (containing mainly Muscovite and Quartz)

Sandstone

Arenite (often composed of Quartz, SiO2)

Slate

Foliated Metamorphic Rock (primarily clay minerals and micas)

Petrified Wood

Silicified Wood (SiO2)

Mica Group Minerals

There isn't a single scientific name as 'Mica' refers to a group of phyllosilicate minerals. Common scientific names include Muscovite (KAl₂ (AlSi₃O₁₀)(OH)₂), Biotite (K(Mg,Fe)₃AlSi₃O₁₀(OH)₂), Phlogopite (KMg₃AlSi₃O₁₀(OH)₂), and Lepidolite (K(Li,Al)₃(Al,Si,Rb)₄O₁₀(F,OH)₂).

Unakite

Epidotized Granite

Basalt

Basalt (Mafic volcanic rock)

Green Quartzite (Aventurine-like)

Quartzite (primarily SiO2 with chromium-rich mica or chlorite inclusions)