Mineral In Metamorphic Rock

Schist (Chlorite or Mica-rich)

Chlorite Schist

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals like Antigorite, Lizardite, or Chrysotile)

Quartzite

Quartzite

Gneiss

Feldspathic biotite gneiss; a high-grade metamorphic rock composed mainly of quartz, feldspar, and mica

Quartz (likely Clear Quartz or Rock Crystal)

Quartz (SiO2)

Mica-rich schist

Muscovite–biotite schist, commonly quartz-bearing

Gneiss

Gneiss (High-grade regional metamorphic rock)

Large calcite crystal cluster

Calcite (calcium carbonate, CaCO₃)

Green Aventurine

Silicon Dioxide with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)

Quartz (specifically Citrine or Yellow Quartzite pebble)

Silicon Dioxide (SiO2)

Quartz (River Pebble)

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Serpentinite

Serpentinite

Gneiss

Gneiss

Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Banded Gneiss

Gneiss (High-grade regional metamorphic rock)

Banded Gneiss River Pebble

Gneiss

Epidote in Matrix (Unakite-like Rock Fragment)

Epidote (Ca2(Al,Fe)3(SiO4)3(OH)) / Altered Metamorphic Pebble

Likely serpentine (serpentinite) pebbles

Serpentine-group minerals, chiefly antigorite, lizardite, and/or chrysotile; commonly Mg₃Si₂O₅(OH)₄, sometimes containing magnetite, chromite, and minor carbonate minerals

Feldspar (Orthoclase)

Potassium Feldspar (KAlSi3O8)

Unakite (or Epidote-rich Granite)

Unakite (Metamorphosed Granite consisting of Epidote, Orthoclase, and Quartz)

Quartzite with Iron Inclusions

Quartzite (SiO2) with Hematite/Limonite

Petrified Wood

Silicified Wood (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

River Cobble (Phyllite or Quartzite)

Metasedimentary Rock (often containing SiO2 or KAl2(AlSi3O10)(OH)2)

Aventurine (likely Green Aventurine)

Silicon Dioxide (SiO2) with mineral inclusions

Gneiss

Gneiss (a rock type, not a specific mineral with a formula)

Lapis Lazuli

Lazurite-dominant rock, (Na,Ca)8(AlSiO4)6(SO4,S,Cl)2

Biotite-rich gneiss (probable)

Foliated quartz–feldspar–biotite gneiss; composition commonly includes quartz (SiO₂), feldspar, and biotite mica

Quartz (Smoky/Rock Crystal)

Silicon Dioxide (SiO2)

Mica Schist

Medium-grade regional metamorphic rock (composition varies)

Schist

Mica Schist (formula variable based on mineral content, typically containing [K,Al,Fe,Mg,Si,O,H])

Jade

There are two distinct minerals commonly known as Jade: Nephrite (a calcium magnesium silicate - Ca2(Mg,Fe)5Si8O22(OH)2) and Jadeite (a sodium aluminum silicate - NaAlSi2O6). Based on the image showing a typically softer, more fibrous appearance, it is likely Nephrite.

Quartzite Pebble

Metamorphic Quartzite (SiO2)

Orbicular jasper / brecciated jasper

Silica-rich microcrystalline quartz (chalcedony), commonly with iron oxides and altered volcanic fragments

Quartz / Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Gneiss (specifically Banded Gneiss)

Gneiss

Slate

Foliated Metamorphic Rock (composed primarily of silica and alumina with iron and magnesium)

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Vein in Host Rock

Silicon dioxide (SiO2) veins in metamorphic/igneous host rock

Inukshuk Rock Sculpture (composed of Granite, Slate, and Amethyst)

Silicon Dioxide (Amethyst portion, SiO2) with mixed silicate rock assemblage

Small quartz-rich rock fragment (tentative)

Quartz, silicon dioxide (SiO₂), possibly in a feldspar-bearing granite fragment