Metamorphic Mineral

Likely schist, possibly serpentinite

Mica schist; potential chlorite–serpentine-rich metamorphic rock

Slate

Metamorphic Mudstone / Shale

Banded Gneiss

Gneiss (Metamorphic Rock)

Slate

Foliated Metamorphic Slate

Schist

Mica Schist

Banded Gneiss

Banded Gneiss (Metamorphic Rock)

Greenish Metamorphic Rock (likely containing epidote or chlorite)

Metamorphic rock, possibly epidosite or greenstone

K-Feldspar (Potassium Feldspar)

Potassium Feldspar (KAlSi3O8)

Blue Apatite

Fluoroapatite (Ca5(PO4)3F)

Schist

Schist (metamorphic rock)

Hematite

Iron Oxide (Fe2O3)

Rhodonite

Rhodonite (Manganese Iron Magnesium Calcium Silicate - (Mn,Fe,Mg,Ca)SiO3)

Banded gneiss (likely amphibolite-bearing gneiss)

Gneiss; quartz–feldspar–mica/amphibole aggregate

Rhodonite

Rhodonite (MnSiO3)

Banded gneiss

Foliated quartz–feldspar gneiss, likely with mica

Gneiss

Gneiss

Greenstone pebble (identification uncertain from photo)

Greenstone, typically metamorphosed mafic rock composed of chlorite, actinolite, and epidote

Kfeldspar (Potassium Feldspar)

KAlSi3O8

Bornite

Bornite (Cu5FeS4)

Quartz-veined metamorphic rock

Likely quartz-veined schist or gneiss; exact identification requires closer examination

Quartzite with Dendritic Manganese Oxide Inclusions

Metamorphic Quartzite (SiO2 with Mn-oxides)

Foliated metamorphic rock, likely biotite gneiss or schist

Biotite-rich gneiss/schist; chiefly quartz, feldspar, and biotite mica

Polished green tumbled stone, likely serpentine

Serpentinite (rock composed chiefly of serpentine-group minerals, approximately Mg₃Si₂O₅(OH)₄)

Greenstone (likely chlorite-rich metamorphic rock)

Chlorite schist/greenstone; possible actinolite- or epidote-bearing assemblage

Rough garnet-bearing rock, likely almandine garnet in matrix

Almandine garnet, Fe₃Al₂(SiO₄)₃; exact host rock cannot be determined from the image

Banded gneiss pebble

Gneiss, typically quartz–feldspar–mica; exact mineral composition requires testing

Quartz Vein in Pelite (Metamorphic Rock)

Hydrothermal Quartz Veining in Metasedimentary Rock (SiO2)

Quartz with Iron Oxide Inclusions

Silicon dioxide with limonite/hematite (SiO2)

Tiger's Eye

Silicon dioxide (SiO2) with fibrous inclusions of crocidolite

Citrine

SiO2 (Silicon Dioxide)

Likely serpentine-rich rock (serpentinite)

Serpentinite, composed mainly of serpentine-group minerals (e.g., lizardite, antigorite, or chrysotile); exact identification is uncertain from the image alone

Garnet-bearing gneiss

Biotite–feldspar gneiss with almandine garnet; quartz likely present

Gneiss

Gneissic Metamorphic Rock

Gneiss

Gneiss (Foliated Metamorphic Rock)

Granite Gneiss

Gneiss (High-grade Metamorphic Rock)

Epidote

Epidote - {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)

Quartz

SiO2 (Silicon Dioxide)

Sodalite

Sodalite (Na8Al6Si6O24Cl2)

Quartz Crystal Cluster / Quartzite

Silicon Dioxide (SiO2)

Quartz with Matrix

Silicon Dioxide (SiO2)

Rhodonite (in matrix)

Rhodonite (Mn,Fe,Mg,Ca)SiO3

Rhodonite

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