Metamorphic Rock (Composed Of Multiple Minerals)

Basalt

Basalt (Mafic volcanic rock)

Unakite (Epidotized Granite)

Epidote-Feldspar-Quartz Rock

Banded Gneiss (River Cobble)

Gneiss (a high-grade metamorphic rock)

Desert Rose (Gypsum Variety)

Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O

Banded Gneiss (River Rock/Pebble)

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

Green Slate (Greenstone)

Foliated Metamorphic Rock (rich in Chlorite/Epidote)

Schist

Mica Schist (Group of medium-grade metamorphic rocks)

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)

Greenstone / Graywacke

Metagraywacke (Chlorite-grade schistose rock)

Unakite

Epidotized Granite

Unidentified Rock Fragment

Unknown

Unakite

Epidotized Granite

Banded Gneiss

Foliated Gneiss

Mica Schist

Mica Schist (predominantly Muscovite/Biotite)

Unakite

Unakite (Epidotized Granite)

Gneiss

Gneiss

Clear Quartz

Silicon Dioxide (SiO2)

Granite

Granite (Phaneritic Quartz-Feldspar Rock)

Quartzite / Sandstone / Chert Mix

Silicon Dioxide (SiO2)

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

Calcite

Sandstone (Stream-rounded Cobble)

Arenite (composed primarily of SiO2, Silica)

Basalt with Vesicular Texture

Extrusive Mafic Igneous Rock (primarily Plagioclase Feldspar and Pyroxene)

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).

Blue Quartzite

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

Bumblebee Jasper

Fossiliferous Volcanic Rock (composed of Calcium Carbonate, Manganese Oxides, and Arsenic Sulfides)

Schist (Biotite/Mica Schist)

Medium-grade regional metamorphic rock (rich in Phyllosilicates)

Granite

Phaneritic plutonic rock (Quartz, Feldspar, Mica)

Granitic Gneiss

Gneiss (Polymetamorphic Granitic Gneiss)

Green Quartzite

Quartzite (primarily SiO2 with chromium-rich mica/fuchsite impurities)

Granite

Phaneritic Felsic Igneous Rock

Granite

Granite (a felsic intrusive igneous rock composed primarily of quartz, feldspar, and mica)

Flagstone (Sandstone)

Clastic Sedimentary Rock (composed of quartz and feldspar)

Sandstone Concretion

Clastic Sedimentary Rock - Quartz Arenite / Sandstone

Green Quartzite (Aventurine-like)

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

Specularite (Specular Hematite)

Iron Oxide (Fe2O3)

Slate

Foliated Metamorphic Rock (primarily clay minerals and micas)

Mica Schist

Medium-grade regional metamorphic rock (composition varies)

Pink Granite

Granite (Phaneritic Igneous Rock)

Gneiss

Gneiss

Basalt

Basalt (Aphanitic Mafic Volcanic Rock)

Apatite

Fluorapatite (Ca5(PO4)3F)

Marble

Marble (metamorphosed limestone/dolostone). Predominantly composed of Calcite (CaCO3) for marble derived from limestone, or Dolomite (CaMg(CO3)2) for marble derived from dolostone.